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Dubuque County Multi-Jurisdictional Hazard Mitigation Plan ApprovalCity of Dubuque City Council Meeting Consent Items # 028. Copyrighted February 5, 2024 ITEM TITLE: Dubuque County Multi -Jurisdictional Hazard Mitigation Plan Approval SUMMARY: City Manager recommending City Council adopt the resolution approving the Dubuque County Multi -Jurisdictional Hazard Mitigation Plan. RESOLUTION Adopting the Dubuque County Multi -Jurisdictional Local Hazard Mitigation Plan SUGGESTED Suggested Disposition: Receive and File; Adopt Resolution(s) DISPOSITION: ATTACHMENTS: Description Type MVM Memo City Manager Memo Memo Staff Memo Resolution Resolutions Hazard Mitigation Plan Supporting Documentation THE C Dubuque DUjIBQTE WAWca 914 Masterpiece on the Mississippi YP pp aoo�•o 13 zai7*20*�oi9 TO: The Honorable Mayor and City Council Members FROM: Michael C. Van Milligen, City Manager SUBJECT: Dubuque County Multi -Jurisdictional Hazard Mitigation Plan Approval DATE: February 1, 2024 Dubuque County Emergency Management Coordinator Thomas Berger is recommending City Council adopt the resolution approving the Dubuque County Multi - Jurisdictional Hazard Mitigation Plan. I concur with the recommendation and respectfully request Mayor and City Council approval. v Mic ael C. Van Milligen MCVM:sv Attachment cc: Crenna Brumwell, City Attorney Cori Burbach, Assistant City Manager Thomas Berger, Dubuque County Emergency Management Coordinator Mary Rose Corrigan, Public Health Director Mark Murphy, Environmental Sanitarian/Emergency Preparedness Planner � EMERGENCY At kNA GENEN r OU6000ECOUNTY Thomas I. Berger, Coordinator Mike Wuertzer, Chairperson Dan Neenan, Vice -Chairperson TO: Michael C. Van Milligen City Manager FR: Thomas I. Berger Dubuque County Emergency Management Coordinator 14928 Public Safety Way Dubuque, IA 52002-8216 Phone: 563-589-4170 Fax: 563-589-0015 E-Mail: tom.berger@dbqcoema.com February 1, 2024 RE: Dubuque County Multi -Jurisdictional Hazard Mitigation Plan Approval INTRODUCTION This memorandum accompanies a request from ECIA about the Dubuque County Multi - Jurisdictional Hazard Mitigation Plan recently approved with revisions by the State of Iowa Homeland Security and Emergency Management. BACKGROUND In early 2023, the Dubuque County Emergency Management Commission started the process to update the Dubuque County Multi -Jurisdictional Hazard Mitigation Plan with the assistance from ECIA to coordinate the updating, completion and submission of the plan. ECIA has assisted other counties in their area to update plans meeting state and federal approval. The planning process consisted of multiple meetings with the ECIA and involved many email exchanges of information to update the plan. Each school district, city and the county had personnel participating in the meetings and updating their portion of the plan. In November of 2023 the draft plan was distributed for public comment and review. Five public comments were received, and all were incorporated into the plan. In December 2023 the plan was submitted to the State of Iowa Homeland Security and Emergency Management. They reviewed the plan and requested revisions to delete some response activities not applicable to hazard mitigation and requested some additions to the plan. In January 2024, the changes were included and subsequently the State of Iowa approved the draft plan for submission to FEMA. I would like to acknowledge Public Health Director Mary Rose Corrigan and Environmental Sanitarian/Emergency Preparedness Planner Mark Murphy for their thorough review of the plan as well as other city departments for contributing updated information to include in the plan. The plan remains a dynamic document and although it is required to be updated and submitted every five years, additions, updates and amendments can be incorporated into the plan as projects progress on a regular basis. By adopting this plan by resolution, it allows the city to remain eligible for federal funding through hazard mitigation grant programs. CONCLUSION &RECOMMENDATION This memorandum is to notify you of the state approval of the plan and the recent submission of the plan to FEMA. We believe the plan meets all the current standards for hazard mitigation planning requirements and request the City of Dubuque to approve the plan by resolution at a future council meeting. Attachments Pre ared by Tam Ber, er Dubu ue County Ernerqency Management A_qencV Director, 563-589-4170 Return to Adrienne N. Breitfelder, City Clerk, 50 W. 13th St., Dubuque, 4A 52001, (563) 589-4100 RESOLUTION NO. 23-24 ADOPTING THE DUBUQUE COUNTY MULTI -JURISDICTIONAL LOCAL HAZARD MITIGATION PLAN Whereas, the City of Dubuque recognizes the threat that natural hazards pose to people and property within our community; and Whereas, undertaking hazard mitigation actions will reduce the potential for harm to people and property from future hazard occurrences; and Whereas, the U.S Congress passed the Disaster Mitigation Act of 2000 ("Disaster Mitigation Act") emphasizing the need for pre -disaster mitigation of potential hazards; and Whereas, the Disaster Mitigation Act made available hazard mitigation grants to state and local governments; and Whereas, an adopted Local Hazard Mitigation Plan is required as a condition of future funding for mitigation projects under multiple FEMA pre- and post -disaster mitigation grant programs; and Whereas, the City of Dubuque fully participated in the hazard mitigation planning process to prepare this Multi -Jurisdictional Local Hazard Mitigation Plan; and Whereas, the Iowa Homeland Security and Emergency Management Department officials have reviewed the "Dubuque County Multi -Jurisdictional Local Hazard Mitigation Plan," and approved it contingent upon approval by the Federal Emergency Management Agency Region VII and this official adoption of the participating governing body; and Whereas, the City of Dubuque desires to comply with the requirements of the Disaster Mitigation Act and to augment its emergency planning efforts by formally adopting the Dubuque County Multi -Jurisdictional Local Hazard Mitigation Plan; and Whereas, adoption by the governing body for the City of Dubuque demonstrates the jurisdictions' commitment to fulfilling the mitigation goals outlined in this Multi -Jurisdictional Local Hazard Mitigation Plan; and Whereas, adoption of this legitimizes the plan and authorizes responsible agencies to carry out their responsibilities under the plan. NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF DUBUQUE, IOWA THAT: Section 1. The City of Dubuque adopts the "Dubuque County Multi -Jurisdictional Local Hazard Mitigation Plan" as an official plan. Section 2. The City of Dubuque will submit this Adoption Resolution to the Iowa Homeland Security and Emergency Management Department and Federal Emergency Management Agency Region VI officials to enable the plan's final approval. Passed, approved, and adopted this 5th day of February 2024. ra avanagh, Mayor Attest: ��rfJti/I�.Q Adrienne N. Breitfelder, City Clerk Dubuque County, Iowa Multi -Jurisdictional Hazard Mitigation Plan 2024 Plan Update Developed by Dubuque County with professional assistance from East Central Intergovernmental Association, Dubuque, Iowa. SPECIAL THANKS AND ACKNOWLEDGEMENTS Dubuque County Hazard Mitigation Planning Committee Name Title Jurisdiction / Stakeholder Bonz, Beth City Administrator City of Asbury Mauer, Loras City Clerk City of Balltown Sigwarth, Sherri Mayor City of Balltown Mausser, Betty City Clerk City of Bankston Stoffel, Rick Mayor City of Bankston Stoll, Kaitlyn City Clerk City of Bernard Hartke, Danielle City Clerk City of Cascade Kotter, Lisa City Manager City of Cascade Hostert, Matt City Clerk City of Centralia Burbach, Cori Assistant City Manager City of Dubuque Murphy, Mark Emergency Preparedness/Public Health City of Dubuque Wernimont, Wally Planning Services Director City of Dubuque Datisman, Marge City Clerk City of Durango Michel, Mick City Administrator City of Dyersville Berger, Janet City Clerk City of Epworth Ludwig, Kelly Director of Finance & Development City of Farley Chipperfield, Kurt City Clerk City of Graf Maiers, Brian Mayor City of Holy Cross Vonderharr, Amy City Clerk City of Holy Cross Oberbroeckling, RogerMayor City of Luxemburg Knapp, Mary Ann City Clerk City of Rickardsville Schmitt, Kevin Mayor City of Sageville Smock, Larry Mayor City of Worthington Powers, Rob Manager of Building & Grounds Dubuque Community School District Berger, Tom EMA Director Dubuque Count McDonough, Ann Supervisor Dubuque County Raber, Ed Planning & Development Director Dubuque County Weber, Russell County Engineer Dubuque County Bahl, Craig Executive Director of Facilities and Operations NICC Hingtgen, Bob Building & Grounds Director Western Dubuque Community School District Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 EXECUTIVE SUMMARY The purpose of hazard mitigation is to reduce or eliminate long-term risk to people and property from hazards. Dubuque County and participating jurisdictions developed this Multi -Jurisdictional local hazard mitigation plan update to reduce future losses to the County and its communities because of hazard events. The plan was prepared pursuant to the requirements of the Disaster Mitigation Act of 2000 and to achieve eligibility for the Federal Emergency Management Agency (FEMA) Hazard Mitigation Assistance Grant Programs. The Dubuque County Multi -Jurisdictional Hazard Mitigation Plan covers the following jurisdictions that participated in the planning process and have submitted a resolution adopting the plan: • Unincorporated County • Asbury • Balltown • Bankston • Bernard • Cascade • Centralia • Dubuque • Durango • Dyersville • Epworth • Farley • Graf • Holy Cross • Luxemburg • New Vienna • Peosta • Rickardsville • Sageville • Sherrill • Worthington • Zwingle • Dubuque Community School District (DCSD) • Western Dubuque Community School District (WDCSD) • Northeast Iowa Community College (NICC) Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 ii Dubuque County, the incorporated areas, and public -school districts listed above developed a Multi -Jurisdictional Hazard Mitigation Plan that was approved by FEMA on May 7, 2013 (hereafter referred to as the 2013 Dubuque County Hazard Mitigation Plan). The plan was updated in 2019 and is again following a similar update format. Therefore, this current planning effort serves to update the previous plan. The plan update process followed a methodology prescribed by FEMA, which began with the formation of a Hazard Mitigation Planning Committee (HMPC) comprised of representatives from Dubuque County, participating jurisdictions, and stakeholders. The HMPC updated the risk assessment that identified and profiled hazards that pose a risk to the Dubuque County planning area, assessed the vulnerability to these hazards, and examined the capabilities in place to mitigate them. The planning area is vulnerable to several hazards that are identified, profiled, and analyzed in this plan. Based upon the risk assessment, the HMPC reviewed the previously developed goals for reducing risk from hazards. The updated goals are listed below: • Goal 1: Increase capabilities within Dubuque County entities to mitigate the effects of hazards by enhancing existing or designing and adopting new policies that will reduce damaging effects of hazards. • Goal 2: Protect the most vulnerable populations, buildings, and critical facilities within Dubuque County through the implementation of cost effective and technically feasible mitigation projects. • Goal 3: Improve the level of responder, government, business and citizen awareness and preparedness for disasters. • Goal 4: Develop programs to assure that response agencies, governments, educational institutions, and local businesses can operate during times of disaster. To meet the identified goals, the recommended mitigation action details are in Chapter 4. The HMPC developed an implementation plan for each action, which identifies priority level, background information, responsible agency, timeline, cost estimate, potential funding sources, and more. PREREQUISITES 44 CFR requirement 201.6(c)(5): The local hazard mitigation plan shall include documentation that the plan has been formally adopted by the governing body of the jurisdiction requesting approval of the plan. For Multi -Jurisdictional plans, each jurisdiction requesting approval of the plan must document that it has been formally adopted. Note to Reviewers: When this plan has been reviewed and approved pending adoption by FEMA Region Vll the adoption resolutions will be signed by the participating jurisdictions and added to Appendix D. A model resolution is provided. All jurisdictions participated in the development of this plan and have adopted the Multi - Jurisdictional plan. Resolutions of Adoptions are included in Appendix D. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 iii Model Resolution Resolution # Adopting the Dubuque County Multi -Jurisdictional Local Hazard Mitigation Plan Whereas, the (Name of Government/District/Organization seeking FEMA approval of hazard mitigation plan) recognizes the threat that natural hazards pose to people and property within our community; and Whereas, undertaking hazard mitigation actions will reduce the potential for harm to people and property from future hazard occurrences; and Whereas, the U.S Congress passed the Disaster Mitigation Act of 2000 ("Disaster Mitigation Act") emphasizing the need for pre -disaster mitigation of potential hazards; Whereas, the Disaster Mitigation Act made available hazard mitigation grants to state and local governments; and Whereas, an adopted Local Hazard Mitigation Plan is required as a condition of future funding for mitigation projects under multiple FEMA pre- and post -disaster mitigation grant programs; and Whereas, the (Name of Government/District/Organization) fully participated in the hazard mitigation planning process to prepare this Multi -Jurisdictional Local Hazard Mitigation Plan; and Whereas, the Iowa Homeland Security and Emergency Management Department and the Federal Emergency Management Agency Region VII officials have reviewed the "Dubuque County Multi -Jurisdictional Local Hazard Mitigation Plan," and approved it contingent upon this official adoption of the participating governing body; and Whereas, the (Name of Government/District/Organization) desires to comply with the requirements of the Disaster Mitigation Act and to augment its emergency planning efforts by formally adopting the Dubuque County Multi -Jurisdictional Local Hazard Mitigation Plan; and Whereas, adoption by the governing body for the (Name of Government/District/Organization) demonstrates the jurisdictions' commitment to fulfilling the mitigation goals outlined in this Multi- Jurisdictional Local Hazard Mitigation Plan Whereas, adoption of this legitimizes the plan and authorizes responsible agencies to carry out their responsibilities under the plan; Now, therefore, be it resolved, that the (Name of Government/District/Organization) adopts the "Dubuque County Multi -Jurisdictional Local Hazard Mitigation Plan" as an official plan; and Be it further resolved, the (Name of Government/District/Organization) will submit this Adoption Resolution to the Iowa Homeland Security and Emergency Management Department and Federal Emergency Management Agency Region VI officials to enable the plan's final approval. Date: Certifying Official: Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 iv Table of Contents 1 Introduction and Planning Process................................................................................ 1 2 Planning Area Profile and Capabilities.......................................................................... 16 3 Risk Assessment............................................................................................................... 40 4 Mitigation Strategy.......................................................................................................... 224 5 Plan Maintenance............................................................................................................ 297 Appendix A: References.................................................................................................... 301 Appendix B Planning Process.......................................................................................... 303 Appendix C: Completed/Deleted Mitigation Actions ................................................... 304 AppendixD: Resolutions................................................................................................... 305 Appendix E: Critical/Essential Facilities (Redacted)....................................................... 306 cpUN.- �� ° o&euoJ*_ 1 INTRODUCTION AND PLANNING PROCESS 1.1 Purpose Dubuque County and its participating cities and public -school districts prepared this Multi - Jurisdictional Hazard Mitigation Plan update to guide hazard mitigation planning to better protect the people and property of the planning area from the effects of hazard events. This plan demonstrates the jurisdictions' commitments to reducing risks from hazards and serves as a tool to help decision makers direct mitigation activities and resources. This plan was also developed to make Dubuque County and the participating jurisdictions eligible for certain federal grant programs, specifically the Federal Emergency Management Agency's (FEMA) Hazard Mitigation Assistance (HMA) grants including the Hazard Mitigation Grant Program, Pre -Disaster Mitigation Program, and Flood Mitigation Assistance Program. 1.2 Background and Scope Each year in the United States, disasters take the lives of hundreds of people and injure thousands more. Nationwide, taxpayers pay billions of dollars annually to help communities, organizations, businesses, and individuals recover from disasters. These monies only partially reflect the true cost of disasters, because additional expenses to insurance companies and nongovernmental organizations are not reimbursed by tax dollars. Many disasters are predictable, and much of the damage caused by these events can be alleviated or even eliminated. Hazard mitigation is defined by FEMA as "any sustained action taken to reduce or eliminate long-term risk to human life and property from a hazard event." The results of a three-year, congressionally mandated independent study to assess future savings from mitigation activities provides evidence that mitigation activities are highly cost-effective. According to the National Institute of Building Sciences' 2019 report, every $1 in federal grants invested in mitigation can save up to $6. Mitigation can: • Protect public safety and prevent loss of life and injury. • Build resilience to current and future disaster risks. • Prevent damage to a community's economic, cultural, and environmental assets. • Reduce operational downtime and speed up the recovery of government and business after disasters. • Reduce the costs of disaster response and recovery, as well as the exposure to risk for first responders. • Help achieve other community goals, such as protecting infrastructure, preserving open space, and boosting economic resilience. Hazard mitigation planning is the process through which hazards that threaten communities are identified, likely impacts of those hazards are determined, mitigation goals are set, and Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 appropriate strategies to lessen impacts are determined, prioritized, and implemented. Dubuque County and the participating incorporated cities and public -school districts that participated in this plan update developed a Multi -Jurisdictional Hazard Mitigation Plan that was approved by FEMA on February 28, 2019 (hereafter referred to as the 2019 Dubuque County Hazard Mitigation Plan). Therefore, this current planning effort serves to update the previous plan. This plan documents the hazard mitigation planning process undertaken by the Dubuque County Hazard Mitigation Planning Committee (HMPC). It identifies relevant hazards and vulnerabilities in the planning area and sets forth an updated mitigation strategy to decrease vulnerability and increase resiliency and sustainability in Dubuque County. The Dubuque County Multi -Jurisdictional Hazard Mitigation Plan is a multi -Jurisdictional plan that geographically covers the participating jurisdictions within Dubuque County's boundaries (hereinafter referred to as the planning area). The following jurisdictions officially participated in the planning process: • Unincorporated Dubuque County • City of Luxemburg • City of Asbury • City of New Vienna • City of Balltown • City of Peosta • City of Bankston • City of Rickardsville • City of Bernard • City of Sageville • City of Cascade • City of Sherrill • City of Centralia • City of Worthington • City of Dubuque • City of Zwingle • City of Durango • Dubuque Community School District • City of Dyersville (DCSD) • City of Epworth • Northeast Iowa Community College (NICC) • City of Farley . Western Dubuque Community School • City of Graf District (WDCSD) • City of Holy Cross This plan was prepared pursuant to the requirements of the Disaster Mitigation Act of 2000 (Public Law 106-390) and the implementing regulations set forth by the Interim Final Rule published in the Federal Register on February 26, 2002, (44 CFR §201.6) and finalized on October 31, 2007. (Hereafter, these requirements, and regulations will be referred to collectively as the Disaster Mitigation Act.) Additionally, this plan is prepared in accordance with the 2023 Local Mitigation Planning Handbook published by FEMA. While the Disaster Mitigation Act emphasized the need for mitigation plans and more coordinated mitigation planning and implementation efforts, the regulations established the requirements that local hazard mitigation plans must meet for a local jurisdiction to be eligible for certain federal disaster assistance and hazard mitigation funding under the Robert T. Stafford Disaster Relief and Emergency Act (Public Law 93-288). Information in this plan will be used to help guide and coordinate mitigation activities and decisions for local land use policy in the future. Proactive mitigation planning will help reduce the cost of disaster response and recovery to communities and their residents by protecting critical community facilities, reducing liability exposure, and minimizing overall community Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 impacts and disruptions. The Dubuque County planning area has been affected by hazards in the past and the participating jurisdictions are therefore committed to reducing future impacts from hazard events and becoming eligible for mitigation -related federal funding. 1.3 Plan Organization This Dubuque County Multi -Jurisdictional Hazard Mitigation Plan update is organized as follows: • Executive Summary • Chapter 1: Introduction and Planning Process • Chapter 2: Planning Area Profile and Capabilities • Chapter 3: Risk Assessment • Chapter 4: Mitigation Strategy • Chapter 5: Plan Implementation and Maintenance • Appendices This is the same general format that was used for the 2019 Dubuque County Hazard Mitigation Plan. 1.4 Planning Process 44 CFR Requirement 201.6(c)(1): [The plan shall document] the planning process used to develop the plan, including how it was prepared, who was involved in the process, and how the public was involved. In February 2023, Dubuque County contracted with ECIA to facilitate the update of the Dubuque County Multi -Jurisdictional Local Hazard Mitigation Plan. ECIA's role was to: • Assist in establishing the Hazard Mitigation Planning Committee (HMPC) as defined by the Disaster Mitigation Act (DMA), • Ensure the updated plan meets the DMA requirements as established by federal regulations and following FEMA's planning guidance, • Facilitate the entire planning process, • Identify the data requirements that HMPC participants could provide and conduct the research and documentation necessary to augment that data, • Assist in facilitating the public input process, • Produce the draft and final plan update documents, and • Coordinate the Iowa Homeland Security and Emergency Management Department and FEMA plan reviews. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 3 1.4.1 Multi -Jurisdictional Participation 44 CFR Requirement §201.6(a)(3): Multi -Jurisdictional plans may be accepted, as appropriate, as long as each jurisdiction has participated in the process and has officially adopted the plan. Dubuque County invited the incorporated cities, public school districts, and various other stakeholders in mitigation planning (identified in Appendix B) to participate in the Dubuque County Multi -Jurisdictional Hazard Mitigation Plan update process. The jurisdictions that elected to participate in this plan are listed above in section 1.2. The DMA requires that each jurisdiction that participates in the planning process must officially adopt the multi -jurisdictional hazard mitigation plan. Each jurisdiction that chose to participate in the planning process and development of the plan was required to meet plan participation requirements defined at the first planning meeting, which includes the following: • Designate a representative to serve on the HMPC; • Participate in at least one of the three HMPC planning meetings by either direct representation or authorized representation; • Provide data for and assist in the development of the updated risk assessment that describes how various hazards impact their jurisdiction; • Provide data to describe current capabilities; • Develop/update mitigation actions (at least one) specific to each jurisdiction; • Provide comments on plan drafts as requested; • Inform the public, local officials, and other interested parties about the planning process and provide opportunities for them to comment on the plan; and • Formally adopt the mitigation plan. All the jurisdictions listed as official participants in this plan met all these participation requirements. Table 1.1 shows the representation of each participating jurisdiction at the planning meetings, provision of Data Collection Guides, and update/development of mitigation actions. Sign -in sheets are included in Appendix B: Planning Process Documentation. Table 1.1. Jurisdictional Participation in Planning Process Jurisdiction Kick-off Meeting Planning Meeting #2 Planning Meeting #3 Data Collection Guide Status of Previous Actions Mitigation Action Plans Dubuque County Asbury Balltown Bankston Bernard Cascade Centralia Dubuque Durango Dyersville Epworth Farley Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 Jurisdiction Kick-off Meeting Planning Meeting #2 Planning Meeting #3 Data Collection Guide Status of Previous Actions Mitigation Action Plans Graf Holy Cross Luxemburg New Vienna Peosta Rickardsville Sageville Sherrill Worthington Zwingle Dubuque CSD Western Dubuque CSD 1.4.2 The Planning Steps ECIA and Dubuque County worked together to establish the framework and process for this planning effort using FEMA's Local Mitigation Planning Handbook (March 2023). The plan update was completed utilizing the 9-task approach within a broad four -phase process: 1) Organize resources, 2) Assess risks, 3) Develop the mitigation plan, and 4) Implement the plan and monitor progress. Into this process, ECIA integrated a detailed 10-step planning process adapted from FEMA's Community Rating System (CRS) and Flood Mitigation Assistance programs. Thus, the process used for this plan meets the funding eligibility requirements of the Hazard Mitigation Assistance grants and Community Rating System. Table 1.2 shows how the process followed fits into FEMA's original four -phase DMA process as well as the revised Nine Task Process outlined in the 2023 Local Mitigation Planning Handbook and the 10-step CRS process. Table 1.2. Mitigation Planning Process Used to Develop the Dubuque County Multijurisdictional Local Hazard Mitigation Plan Phase Community Rating System Local Mitigation Planning Handbook Tasks (44 (CRS) Planning Steps CFR Part 201) (Activity 510) Phase I Step 1. Organize Task 1: Determine the Planning Area and Resources Task 2: Build the Planning Team 44 CFR 201.6(c)(1) Step 2. Involve the public Task 3: Create an Outreach Strategy 44 CFR 201.6(b)(1) Step 3. Coordinate Task 4: Review Community Capabilities 44 CFR 201.E b 2 & 3 Phase II Step 4. Assess the hazard Task 5: Conduct a Risk Assessment 44 CFR 201.6(c)(2)(i) 44 CFR 201.6(c)(2)(ii) & (iii) Step 5. Assess the problem Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 Phase III Step 6. Set goals Task 6: Develop a Mitigation Strategy 44 CFR 201.6(c)(3)(i); 44 CFR 201.6(c)(3)(ii); and 44 CFR 201.6(c)(3)(iii) Step 7. Review possible activities Step 8. Draft an action plan Phase IV Step 9. Adopt the plan Task 8: Review and Adopt the Plan Step 10. Implement, evaluate, revise Task 7: Keep the Plan Current Task 9: Create a Safe and Resilient Community 44 CFR 201.6(c)(4) Phase I Organize Resources Step 1: Organize the Planning Team (Handbook Tasks 1 & 2) The planning process resulting in the preparation of this plan document officially began with an initial coordination conference call and survey review on July 10, 2023. Participants of the meeting included the Dubuque County Emergency Management Coordinator, ECIA Senior Planner and the ECIA Director of Special Programs. The purpose of this meeting was to determine the jurisdictions and other stakeholders that would be invited to participate on the HMPC (Step 1), set tentative planning meeting dates, identify GIS needs and resources, discuss the hazards to be included in the plan update and options for the flood risk assessment methodology, and develop an initial public participation strategy. Detailed meeting minutes are included in Appendix B. After the initial coordination meeting, a formal kick-off planning email was sent on July 19, 2023 followed by two additional planning meetings held on August 30 and September 18, 2023. A complete list of all representatives of the agencies and organizations that participated on the Dubuque County HMPC is provided in Appendix B. The HMPC communicated during the planning process with a combination of face-to-face meetings, survey platforms, phone interviews, and email correspondence. The meeting schedule and topics are listed in Table 1.3. Table 1.3. Schedule of HMPC Meetings Meeting Topic Date Informational General overview of planning process/requirements and July 10, 2023 Meeting schedule. Kick-off Introduction to DMA, the planning process, hazard identification July 19, 2023 Meeting and public input strategy. Distribution of data collection guide to /Survey jurisdictions. Preliminary hazard data. Discussion of compiled Sent GIS data for critical facility inventory. Planning Review of draft Risk Assessment, update plan goals, instructions August 30, 3023 Meeting #2 to update status of previous mitigation actions Planning Development of new mitigation actions, mitigation action planning September 28, 2023 Meeting #3 and prioritization. Determine process to monitor, evaluate, and update plan. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 During the kick-off meeting ECIA presented information on the scope and purpose of the plan, participation requirements of HMPC members, and the proposed project work plan and schedule. Plans for public involvement (Step 2) and coordination with other agencies and departments (Step 3) were discussed. ECIA also introduced hazard identification requirements and data needs. The HMPC discussed potential hazards as well as past events and impacts and refined the identified hazards to be relevant to Dubuque County. The hazard ranking methodology utilized by Iowa Homeland Security and Emergency Management Department in the State Hazard Mitigation Plan was introduced and preliminary information was presented for each hazard identified. Participants were given the ECIA Data Collection Guide to facilitate the collection of information needed to support the plan, such as data on historic hazard events, values at risk, and current capabilities. Each participating jurisdiction completed and returned the worksheets in the Data Collection Guide to ECIA. ECIA integrated this information into the plan, supporting the development of Chapters 2 and 3. Step 2: Plan for Public Involvement (Handbook Task 3) 44 CFR Requirement 201.6(b): An open public involvement process is essential to the development of an effective plan. In order to develop a more comprehensive approach to reducing the effects of natural disasters, the planning process shall include: (1) an opportunity for the public to comment on the plan during the drafting stage and prior to plan approval. At the kick-off meeting, the HMPC discussed options for soliciting public input on the mitigation plan. To provide an opportunity for the public to comment during the drafting stage, the committee determined that the most effective method would be dissemination of a survey. The survey was announced via email to all county supervisors and appropriate personnel, city administrators, managers, clerks, mayors, and councils. The survey was developed specific to the Dubuque County Mitigation Plan and provided a brief plan summary as well as a questionnaire to capture public and stakeholder input. The survey was made available online as well as in hard copy at the Dubuque County Courthouse, local city halls, and local fire stations. A copy of the survey is provided in Appendix B. Committee members distributed the survey to members of the public and key stakeholders in their own jurisdiction. In all, 55 surveys were completed. The survey asked the public and stakeholders to indicate their opinion on the likelihood for each hazard to impact their jurisdiction. They were asked to rate the probability of each hazard profiled in this plan as 1-unlikely, 2-occasional, 3-likely, and 4-highly likely. The summary results of this question are ranked from highest to lowest rounded weighted average and are provided in Figure 1.1. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 Figure 1.1. Survey Results —Probability of Hazards Hazard Severe Winter Storm Thu nde rstorm/Lightn i ng/Hai I Tornado/Windstorm Extreme Heat Flash Flood Drought Transportation Incident River Flooding Hazardous Materials Human Disease Grass/Wildland Fire Infrastructure Failure Sinkholes Animal/Plant/Crop Disease Expansive Soils Terrorism Radiological Incident Dam/Levee Failure Landslide Unlikely Occasionally Likely 1 11 2 8 3 11 6 18 8 14 5 18 13 10 16 9 15 19 13 23 13 24 18 20 24 17 23 21 30 13 37 7 44 4 44 7 46 5 Source: SurveyMonkey Results/ECIA, 2023. Rounded Weighted Highly Likely Average 11 28 3.2S 14 27 3.2S 13 24 3.14 9 18 2.7E 11 18 2.7E 15 13 2.71 14 14 2.57 11 15 2.4S 10 7 2.1E 9 6 2.1E 10 4 2.1C 6 7 2.04 7 3 1.7E 6 1 1.71 5 3 1. 6_:; 4 3 1.4i 2 1 1.22 0 0 1.14 0 0 1. 1( The survey also asked the public and stakeholders to indicate their opinion on the potential magnitude of each hazard on their jurisdiction. They were asked to rate the probability of each hazard profiled in this plan as 1-negligible, 2-limited, 3-critical, and 4-catastrophic. The summary results of this question are ranked from highest to lowest weighted rounded average, provided in Figure 1.2. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 8 Figure 1.2. Survey Results —Magnitude of Hazards Warning Probability Magnitude Time Duration CPRI Tornado/Windstorm 4 3 3 3 3.45 Thunderstorm/Lightning/Hail 4 2 3 2 3.05 Severe Winter Storm 4 2 1 3 2.85 Flash Flood 3 2 4 2 2.75 Drought 3 2 1 4 2.5 Transportation Incident 3 1 4 2 2.45 Extreme Heat 3 2 1 3 2.4 Hazardous Materials 2 2 4 3 2.4 Infrastructure Failure 2 2 4 3 2.4 River Flooding 3 1 1 4 2.2 Human Disease 2 2 1 4 2.05 Grass/Wildland Fire 2 1 4 1 1.9 Radiological Incident 1 1 4 4 1.75 Terrorism 1 1 4 4 1.75 Landslide 1 1 4 1 1.45 Sinkholes 1 1 4 1 1.45 Animal/Plant/Crop Disease 1 1 1 4 1.3 Dam/Levee Failure 1 1 1 4 1.3 Expansive Soils 1 1 1 4 1.3 Source: SurveyMonkey Results The public was also given an opportunity to provide input on the final draft of the complete plan. The entire plan draft was made available on the County's website as a PDF document. In addition, hard copies were made available at the Dubuque County Courthouse and the Epworth City Hall. Dubuque County announced the availability of the entire final draft plan and the two -week final public comment period on the County website. A copy of the announcement is provided in Appendix B. The final public comment period was from November 1 - 30, 2023. Five comments were received and incorporated into the final plan. The HMPC invited other targeted stakeholders to comment on the draft plan via an e-mail letter, which is described in greater detail in Step 3: Coordinate with Other Departments and Agencies. Minor comments were received and incorporated. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 9 Step 3: Coordinate with Other Departments and Agencies and Incorporate Existing Information (Handbook Task 3) 44 CFR Requirement 201.6(b): An open public involvement process is essential to the development of an effective plan. In order to develop a more comprehensive approach to reducing the effects of natural disasters, the planning process shall include: (2) An opportunity for neighboring communities, local and regional agencies involved in hazard mitigation activities, and agencies that have the authority to regulate development, as well as businesses, academia and other private and non-profit interests to be involved in the planning process. (3) Review and incorporation, if appropriate, of existing plans, studies, reports, and technical information. There are numerous organizations whose goals and interests' interface with hazard mitigation in Dubuque County. Coordination with these organizations and other community planning efforts is vital to the success of this plan. Dubuque County invited neighboring counties, other local, state, and federal departments, and agencies as well as institutions of higher learning to the second planning meeting to learn about the hazard mitigation plan update initiative. In addition, the HMPC developed a list of additional stakeholders involved in hazard mitigation activities, to invite by e-mail letter to review and comment on the final draft of the Dubuque County Multi - Jurisdictional Hazard Mitigation Plan prior to submittal to the State and FEMA. The stakeholders that were invited to comment on the final plan draft included in Table 1.4. Table 1.4. Stakeholder Involvement Stakeholder Type Provided Data for Risk Assessment Invited to Comment on Final Draft Iowa State University, Iowa Flood Center Academia X Clayton County Emergency Management Adjacent County X Jackson County Emergency Management Adjacent County X Jones County Emergency Management Adjacent County X Delaware County Emergency Management Adjacent County X Grant County, Wisconsin Emergency Management Adjacent County X Jo Daviess County, Illinois Emergency Management Adjacent County X Environmental Protection Agency Federal Agency X Federal Emergency Management Agency Federal Agency X National Weather Service Federal Agency X U.S. Army Corps of Engineers Federal Agency X U.S. Geological Survey Federal Agency X East Central Intergovernmental Association Regional Planning X Iowa Department of Agriculture and Land Stewardship State Agency X Iowa Department of Natural Resources State Agency X X Iowa Homeland Security and Emergency Management State Agency X X Several additional stakeholder agencies were contacted to obtain data in preparation of the Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 10 Risk Assessment. This included contact with specific representatives of stakeholder agencies, as well as accessing stakeholder data that has been made available to the public via the internet. Integration of Other Data, Reports, Studies, and Plans In addition, input was solicited from many other agencies and organizations that provided information but were not able to attend planning meetings. As part of the coordination with other agencies, the HMPC collected and reviewed existing technical data, reports, and plans. These included: • Iowa Hazard Mitigation Plan (September 2018); • Dubuque County Hazard Mitigation Plan (February 2019); • Iowa Watershed Approach, Bee Branch Watershed Flood Mitigation Project, and Bee Branch Healthy Homes Resiliency Program (BBHHRP); • National Flood Insurance Program Policy and Loss data; • Flood Insurance Rate Maps for all of Dubuque County; • Iowa Department of Natural Resources, Dam Safety Program Inventory of Dams for Dubuque County, available inundation maps; • National Inventory of Dams • National Levee Inventory levee protected areas • Wildland/Urban Interface and Intermix areas from the SILVIS Lab, Department of Forest Ecology and Management, University of Wisconsin; • Various local plans such as Comprehensive Plans, Economic Development Plans, Capital Improvement Plans, etc. For a complete list of local plans that were reviewed and incorporated, see Chapter 2; • US Department of Agriculture's (USDA) Risk Management Agency Crop Insurance Statistics. This information was used in the development of the hazard identification, vulnerability assessment, and capability assessment and in the formation of goals, objectives, and mitigation actions. These sources, as well as additional sources of information are documented throughout the plan and in Appendix A, References. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 11 Phase 2 Assess Risk (Handbook Task 5) Step 4: Assess the Hazard: Identify and Profile Hazards ECIA assisted the HMPC in a process to identify the hazards that have impacted or could impact communities in Dubuque County. At the kick-off meeting, the HMPC examined the history of disaster declarations in Dubuque County, the list of hazards considered in the 2018 Iowa State Hazard Mitigation Plan, and the hazards identified in the previous hazard mitigation plan. The committee then worked through this list of all potential hazards that could affect the planning area. They discussed past hazard events, types of damage, and where additional information might be found. The committee identified 19 natural and human -caused hazards that have the potential to impact the planning area. Additional information on the hazard identification process and which hazards were identified for each jurisdiction is provided in Chapter 3. During the kick-off meeting, the HMPC discussed past events and impacts on a county- wide basis to contribute to the risk assessment update. After the kick-off meeting, each jurisdiction completed a Data Collection Guide, including information on previous hazard events in their community. Utilizing the information from the Data Collection Guides as well as existing plans, studies, reports, and technical information as well as information available through internet research and GIS analysis, a profile was developed for each hazard identified. More information on the methodology and resources used to identify and profile the hazards can be found in Chapter 3. Step 5: Assess the Problem: Identify Assets and Estimate Losses Assets for each jurisdiction were identified through a combination of several resources. The Dubuque County GIS Department and Assessor's Office provided access to datasets with parcel and building data as well as corporate boundaries, school district boundaries, and other available GIS layers. Population data was obtained from the U.S. Census Bureau. The critical facility inventory was compiled from data layers available from Dubuque County. Methodologies and results of the critical facility analysis are provided in Chapter 3 and Appendix E. Additional assets such as historic, cultural, and economic assets as well as specific vulnerable populations and structures were obtained from a variety of sources as described in Chapter 3. The HMPC also analyzed development since the last plan update and future development trends from data provided by each jurisdiction on the Data Collection Guide as well as data available from the U.S. Census Bureau and obtained from jurisdictions through other planning mechanisms such as Comprehensive Plans and Future Development Plans. After profiling the hazards that could affect Dubuque County and identifying assets, the HMPC collected information to describe the likely impacts of future hazard events on the participating jurisdictions. For each hazard, there is a discussion regarding future development as well as climate change impacts regarding how vulnerability to that specific hazard might be impacted in the future. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 12 Existing mitigation capabilities were also considered in developing loss estimates. This assessment consisted of identifying the existing mitigation capabilities of participating jurisdictions. This involved collecting information about existing government programs, policies, regulations, ordinances, and plans that mitigate or could be used to mitigate risk from hazards. Participating jurisdictions collected information on their regulatory, personnel, fiscal, and technical capabilities, as well as previous and ongoing mitigation initiatives. This information is included in Chapter 2 Planning Area Profile and Capabilities. Specific capabilities such as participation in the National Flood Insurance Program as well as designation as Fire Wise Communities or Storm Ready Communities and placement of storm sirens are incorporated in the vulnerability analysis discussions, where applicable. Taking into consideration the vulnerability and capability assessments, and where sufficient information was available, a variety of methods was used to estimate losses for each profiled hazard. For geographic hazards such as river flooding, dam failure, levee failure, and hazardous materials (fixed facilities) specific assets/areas at risk and loss estimates were determined through GIS analysis. For other hazards such as weather - related hazards, loss estimates were developed based on statistical analysis of historic events. For some human- caused hazards, loss estimates were scenario -based. The methodologies for each loss estimate are described in detail in Chapter 3. Within each hazard section, the text provides details on how the hazard varies by jurisdiction, where applicable. In addition, at the conclusion of each hazard section, a summary table indicates the specific probability, magnitude, warning time, and duration rating of the hazard for each jurisdiction is provided to show how the hazard varies. Where applicable, introductory text preceding the table highlights noted variables. Results of the preliminary risk assessment were presented at Meeting #2 and the Draft Risk Assessment (Chapter 3) was provided to the HMPC for review and comment. Several comments, corrections, and suggestions were provided to ECIA and incorporated into the risk assessment as appropriate. Phase 3 Develop the Mitigation Plan (Handbook Task 6) Step 6: Set Goals ECIA facilitated a discussion session with the HMPC during Meeting #2 to review and update goals. Common categories of mitigation goals were presented as well as the 2018 State Hazard Mitigation Plan goals. This planning effort is an update to an existing hazard mitigation plan. As a result, the goals from the 2019 Dubuque County Hazard Mitigation Plan were reviewed. The validated goals for this plan update are provided below: • Goal 1: Increase capabilities within Dubuque County entities to mitigate the effects of hazards by enhancing existing or designing and adopting new policies that will reduce damaging effects of hazards. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 13 • Goal 2: Protect the most vulnerable populations, buildings, and critical facilities within Dubuque County through the implementation of cost effective and technically feasible mitigation projects. • Goal 3: Improve the level of responder, government, business and citizen awareness and preparedness for disasters. • Goal 4: Develop programs to assure that response agencies, governments, educational institutions, and local businesses can operate during times of disaster. Step 7: Review Possible Activities At meeting #2, a handout of previous actions was provided to all jurisdictions with instructions to provide updates for each action. Jurisdictions were encouraged to maintain a focused approach and continue forward only those actions that are aimed at implementing long-term solutions to prevent losses from hazards. The focus of Meeting #3 was to update the mitigation strategy by discussing relevant new actions considered necessary because of the updated risk assessment. The HMPC reviewed the following: plan goals, previous actions from the 2019 plan, key issues from the risk assessment, Iowa Homeland Security and Emergency Management's HMA funding priorities, public opinion survey results on types of actions desired, and FEMA's Mitigation Action Ideas publication. The group discussed the types of mitigation actions/projects that could be done by the jurisdictions in Dubuque County. Consideration was given to the analysis results provided in the risk assessment and the anticipated success for each project type. Projects relating to emergency response were discussed, but participants were encouraged to focus on long-term mitigation solutions since response -related mitigation actions occur on a routine basis as requirements of other plans. Complex projects that would necessitate the use of large numbers of county resources were also discussed. This opportunity to discuss a broad range of mitigation alternatives allowed the jurisdictions to understand the overall priorities of the committee and to allow for discussion of the types of projects most beneficial to each jurisdiction. As part of this discussion, consideration was given to the potential cost of each project in relation to the anticipated future cost savings. The jurisdictions were also provided instructions for completing the Mitigation Action Plan for each continuing and newly developed action. A modified form of the STAPLEE prioritization tool was also provided to assist jurisdictions in determining the prioritization that should be assigned to each action. To provide a current, comprehensive, and consistent prioritization approach, all continuing and new actions were evaluated using the modified STAPLEE prioritization tool for the plan update. The details from the Action Plan for each Continuing and New action are provided in Chapter 4. The completed and deleted actions are provided in Appendix C. Chapter 4 provides additional details regarding the process undertaken to refine the mitigation strategy to make Dubuque County and its jurisdictions more disaster resistant. Step 8: Draft an Action Plan A complete draft of the plan was made available online and in hard copy for review and comment by the public, other agencies and interested stakeholders. This review period Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 14 was from November 1 — 30, 2023. Methods for inviting interested parties and the public to review and comment on the plan were discussed in Steps 2 and 3, and materials are provided in Appendix B. Comments were integrated into a final draft for submittal to the Iowa Homeland Security and Emergency Management Division and FEMA. Phase 4 Implement the Plan and Monitor Progress Step 9: Adopt the Plan (Handbook Task 8) To secure buy -in and officially implement the plan, the governing bodies of each participating jurisdiction adopted the plan. Scanned copies of resolutions of adoption are included in Appendix D of this plan. Step 10: Implement, Evaluate, and Revise the Plan (Handbook Tasks 7 & 9) The HMPC developed and agreed upon an overall strategy for plan implementation and for monitoring and maintaining the plan over time during Meeting #3. This strategy is described in Chapter 5, Plan Maintenance Process. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 15 2 PLANNING AREA PROFILE AND CAPABILITIES This chapter provides a general profile of Dubuque County, followed by individual sections for each participating jurisdiction. The sections for each jurisdiction provide an overview profile as well as details on existing capabilities, plans, and programs that enhance their ability to implement mitigation strategies. 2.1 Dubuque County Planning Area Profile Figure 2.1 provides a map of the Dubuque County planning area. The planning area boundaries include the unincorporated areas of Dubuque County as well as the following incorporated cities: Asbury, Balltown, Bankston, Bernard, Cascade, Centralia, Dubuque, Durango, Dyersville, Epworth, Farley, Graf, Holy Cross, Luxemburg, New Vienna, Peosta, Rickardsville, Sageville, Sherrill, Worthington, and Zwingle. The following school districts that participated in development of this plan are also included in the planning area: Dubuque Public School District and Western Dubuque Public School District. The school districts are discussed separately in Section 2.3. Figure 2.1. Dubuque County Planning Area Figure 2.1 Dubuque County Planning Area Grant Legend Clayton i City Boundaries 1 y Gounry Boundaries N Highway Clayton G ` � �ht Road sg�3 Duhuque RAI I. O WN 4y6u94e� — — Railroad 5 Parks 3 —L♦Jk y SHERRILL I Water I 1 RICKARDSVILLE I/ at ti NEW 14 �\ OLIRRW r •� } -�_ \ 1 V1L7tNA S/rr;�V1LLE • 1 'I BANNPTON ASBURY DUBUQUE Grant DYERS_ VILLE Irtf, � i )o Daviess RD rJ CEN RALL4 ..L ` 20 zo 52 0 4 F`— t "CrWdOR7H" —r'PLO A, t T xo si rIJNGTON - - � a o _ � Y O Dubuqu CASCADE - ones " 0 y I ` 11 Miles D Yi+ Mao trratr4 br ECLA, 2023. 0.+r., r6 r WA, ESRI. US Cvre Buz US Fah & WiWlif� Say Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 16 2.1.1 Geography and Topography Dubuque County is in the northeastern part of Iowa, where the borders of Iowa, Wisconsin, and Illinois meet, separated by the Mississippi River. The County is bordered by Jackson and Jones counties on the south, Delaware County on the west, and Clayton County on the north. The County contains a land area of 617 square miles, or 391,680 acres. The County has 17 townships and 21 incorporated cities, the most incorporated cities of any other county in Iowa. The county seat is Dubuque, Iowa, which is located along the Mississippi River in the east - central portion of the county. Eastern Dubuque County is markedly different from the western portion in that its topography is very uneven. The city of Dubuque and surrounding areas adjacent to the Mississippi River have many steep hills, bluffs, and ravines. Also, the eastern portion is more heavily wooded than the west, which is mostly rolling farmland. Dubuque County is widely known for its impressive bluffs along the Mississippi River, which run along the entire length of the county's riverbanks. These form part of Iowa's Coulee Region, otherwise known as the Driftless Area. Adjacent counties: • Clayton County (north) • Grant County, Wisconsin (northeast), across the Mississippi River • Jo Daviess County, Illinois (east), across the Mississippi River • Jackson County (southeast) • Jones County (southwest) • Delaware County (west) 2.1.2 Major Rivers and Watersheds The four major watersheds in Dubuque County are Grant -Little Maquoketa, Turkey, Apple - Plum, and Maquoketa. Major rivers in Dubuque include Mississippi River; Catfish Creek; South Fork, Middle Fork, and North Fork Catfish Creek; Little Maquoketa River. There are four hydrologic unit codes level 8, or HUC-8, watersheds that Dubuque County crosses (see Figure 2.2): • Grant -Little Maquoketa, 0706003 • Turkey, 0706004 • Apple -Plum, 07060005 • Maquoketa, 07060006 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 17 0'70 600 \070 600 0 3 Dubuque nW 07060006{"0-7060005 Source: EPA Surf Your Watershed Website, https:Hcfpub.epa.gov/surf/county.cfm?fips code=19061 2.1.3 History Dubuque County is coterminous with the Dubuque, Iowa Metropolitan Statistical Area, and is the seventh largest county by population in the state. It is named for Julien Dubuque, the first European settler of Iowa. It is one of Iowa's two original counties along with Des Moines County; both were organized by the Michigan Territorial legislature in 1834. The city of Dubuque, the county seat, was chartered in 1833 as the first city in Iowa. 2.1.4 Climate Dubuque County, like the entire state of Iowa, is within the humid continental zone. The mean temperature of the county in the summer months (June, July, August) is 70.4 degrees Fahrenheit and 21.9 degrees Fahrenheit in the winter (December, January, February). Seasons fluctuate from being very wet to very dry, and temperatures can fluctuate greatly in spring and autumn months. Average annual precipitation is approximately 37 inches. Figure 2.3 and Table 2.1 provide monthly climate normals for Dubuque, Iowa from 1981 to 2022. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 18 5 4.5 s 4 c 3.5 3 0 2.5 a 2 Q 1.5 � 1 a 0.5 0 Monthly Climate Normals (1981-2022)-DUBUQUE RGNL AP, IA Total Precipitation Normal (inches) Mean Min Temperature Normal (*F) �Jy� sec °4ot 6 met Qo �eQ�e� p`` O Mean Max temperature Normal (*F) Mean Avg Temperature Normal (*F) Source: High Plains Regional Climate Center, htto://www.hr)rcc.un1.edu/onIinedataservices.i)hi)#data (ACTS-CLIMOD) Table 2.1. Monthly Climate Normals (1981-2022). Dubuaue Reaional Airport. IA 100 80 60 40 20 0 LL v Q E a) F- Month Total Precipitation Normal (inches) Mean Max temperature Normal (*F) Mean Min Temperature Normal (*F) Mean Avg Temperature Normal (*F) January 1.22 26.9 11.5 19.2 February 1.5 30.77 14.7 22.7 March 2.28 44.3 26.7 35.5 April 3.68 58.1 37.5 47.8 May 4.14 69.4 48.6 59 June 4.76 78.9 58.6 68.8 July 4.31 82.1 62.4 72.3 August 4.42 80 60.3 70.2 September 3.75 73 52 62.5 October 2.92 60.1 40.1 50.1 November 2.33 45 28.2 36.6 December 1.9 31.3 16.5 23.9 Annual 37.07 56.6 38.1 47.4 Source: High Plains Regional Climate Data 2.1.5 Population/Demographics The 2020 population of Dubuque County was 99,266. This was an 11.36% increase from the 2000 census population of 89,143. Table 2.2 provides the populations for each city, the unincorporated county, and the State of Iowa for 2000, 2010, and 2020 with the number and percent change from 2000 to 2020. The unincorporated areas population was determined by subtracting the populations of the incorporated areas from the overall county population. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 19 Table 2.2. Dubuque County Population 2000 — 2020 by City Jurisdiction 2000 Population 2010 Population 2020 Population # Change 2000-2020 % Change 2000-2020 Asbury 2,450 4,170 5,943 3,493 142.57% Balltown 73 68 79 6 8.22% Bankston 27 25 23 -4 -14.81 % Bernard 97 112 114 17 17.53% Cascade 1,958 2,159 2,386 428 21.86% Centralia 101 134 116 15 14.85% Dubuque 57,686 57,637 59,667 1,981 3.43% Durango 24 22 10 -14 -58.33% Dyersville 4,035 4,058 4,477 442 10.95% E worth 1,428 1,860 2,023 595 41.67% Farley 1,334 1,537 1,766 432 32.38% Graf 73 79 76 3 4.11 % Holy Cross 339 374 356 17 5.01 % Luxemburg 246 240 245 -1 -0.41 % New Vienna 400 407 382 -18 -4.50% Peosta 651 1,377 1,908 1,257 193.09% Rickardsville 191 182 202 11 5.76% Sa eville 203 122 95 -108 -53.20% Sherrill 186 177 189 3 1.61 % Worthington 381 401 382 1 0.26% Zwin le 100 91 84 -16 -16.00% Dubuque County 89,143 93,653 99,266 10,123 11.36% Iowa 2,926,324 3,046,355 3,190,369 264,045 9.02% Source: U.S. Census Bureau, Iowa State Data Center. According to the 2022 U.S. Census Bureau Quick Facts for Dubuque County, 5.9 percent of the population is under age 5 and 19.5 percent of the population is over age 65 in Dubuque County. There are fewer children under age five and more people over the age of 65 since 2015. In the 2022 Quick Facts, there were 39,534 households with an average household size of 2.40 people. The Hazards and Vulnerability Research Institute at the University of South Carolina developed the Social Vulnerability Index (SoVI ®) to evaluate and rank the ability to respond to, cope with, recover from, and adapt to the stress of hazardous events ranging from natural disasters, such as tornadoes or disease outbreaks, to human -caused threats, such as toxic chemical spills. The CDC/ATSDR Social Vulnerability Index (CDC/ATSDR SVI 2020) County Map depicts the social vulnerability of communities, at census tract level within a specified county. The index synthesizes 30 socioeconomic variables, which the research literature suggests contribute to reduction in a community's ability to prepare for, respond to, and recover from hazards. SoVI data sources include primarily those from the United States Census Bureau. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 20 Figure 2.4a shows that Dubuque County has a Medium -High Social Vulnerability Index, which indicates that Dubuque County populations will probably need help to recover from disasters. Further, when the data is broken down to census tracts within the county, we see greater variability. In the oldest section of the City of Dubuque, the SVI is in the highest category, and therefore, the most vulnerable. Figure 2.4a CDC/ATSDR Iowa Statewide SVI Comparison 2020 Level of Vulnerability how Low -Medium Medium i oa j N/A Source: CDC/ATSDR Social Vulnerability Index Figure 2.4b CDC/ATSDR Social Vulnerability Index 2020 — Dubuque County, Iowa Source: CDC/ATSDR Social Vulnerability Index Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 21 Dubuque County values in Table 2.3 are for all of Dubuque County, including the incorporated cities. The percentage of people below poverty level remains less at the County level than at the State level, but several communities are considerably higher than the State or overall County poverty levels. Cascade, Centralia, Dubuque, Sageville, Worthington, and Zwingle are all above the County and State averages, while Worthington is also above the County average. Table 2.3. Unemployment, Income, and Poverty Demographics, Dubuque County, Iowa Jurisdiction Civilian Labor Force - percent Unemployed Median Household Income ($) Percentage of People Below Poverty Level Population 16 Years and Over Asbury 2.1% $101,818 2.9% 4,036 Balltown 0.0% $83,750 0.0% 34 Bankston ** ** ** ** Bernard 0.0% $56,250 0.7% 116 Cascade 1.0% $69,737 16.8% 1,529 Centralia 1.0% $65,417.000 13.1 % 98 Dubuque 3.3% $58,691.000 12.3% 48,904 Durango 0.0% $91,250.000 0.0% 9 Dyersville 2.1 % $66,081.000 3.7% 3,434 Epworth 1 % $61,208.000 5.0% 1,393 Farley 2.5% $81,736.000 5.0% 1,298 Graf 0.0% $48,750.000 4.4% 36 Holy Cross 0.4% $68,889.000 2.6% 257 Luxemburg 0.0% $73,438.000 4.9% 165 New Vienna 1.1 % $80,625.000 4.3% 364 Peosta 1.3% $94,438.000 6.9% 1,553 Rickardsville 0.0% $83,750.000 3.0% 151 Sageville 1.7% $61,250.000 11.4% 58 Sherrill 2.5% $84,167.000 4.9% 157 Worthington 1.1% $65,313.000 10.6% 270 Zwingle 5.6% $51,786.000 29.2% 72 Dubuque County 1 2.7%1 $68,198.0001 9.3%1 78,928 Iowa 1 2.6%1 $65,429.0001 11.0%j 2,523,649 I2017-2021 ACS 2017-2021 ACS 2017-2021 ACS 2017-2021 ACS Source: U.S. Census Bureau 2017-2021, American Community Survey Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 22 2.1.6 Occupations Table 2.4 provides occupation statistics for the incorporated cities and the county for the civilian employed population 16 years and over as of the 2020 U.S. Census. Table 2.4. Occupation Statistics, Dubuque County, Iowa Jurisdiction Management, Business, Science, and Arts Occupations Service Occupations Sales and Office Occupations Natural Resources, Construction, and Maitenance Occupations Production, Transportation, and Material Moving Occupations Asbury 54.2% 12.6% 19.6% 2.7% 10.8% Balltown 15.0% 5.0% 20.0% 30.0% 30.0% Bankston 0.0% 0.0% 0.0% 0.0% 100.0% Bernard 25.3% 21.2% 14.1 % 10.1 % 29.3% Cascade 28.0% 15.6% 19.1 % 12.7% 24.7% Centralia 32.9% 12.7% 16.5% 5.1 % 32.9% Dubuque 36.8% 17.7% 22.7% 5.2% 17.6% Durango 0.0% 50.0% 33.3% 0.0% 16.7% Dyersville 23.5% 8.8% 29.2% 13.6% 24.9% Epworth 26.0% 18.6% 27.0% 10.3% 18.1 % Farley 33.3% 18.6% 14.9% 11.2% 22.0% Graf 32.0% 12.0% 8.0% 40.0% 8.0% Holy Cross 29.0% 15.5% 18.7% 21.2% 15.5% Luxemburg 36.1% 8.2% 20.6% 14.4% 20.6% New Vienna 20.1 % 19.0% 16.1 % 9.5% 35.2% Peosta 39.9% 12.5% 21.8% 9.7% 16.1 % Rickardsville 27.2% 1.9% 23.3% 30.1 % 17.5% Sageville 56.3% 21.9% 18.8% 3.1 % 0.0% Sherrill 33.0% 16.5% 17.4% 9.6% 23.5% Worthington 20.8% 11.5% 16.4% 13.1% 38.3% Zwingle 17.9% 1.8% 16.1 % 25.0% 39.3% Dubuque County 36.7% 17.0% 21.9% 8.3% 16.1% Iowa 1 39.0% 14.8% 19.7% 9.7% 16.8% Source: U.S. Census httos://data.census.00v/table?t=Occupation&a=040XX000S19 050XX000S19061 160XX000S1903160,1904375,1904510,1906085,1911 305,1912630,1922395,1922935,1923115,1925725,1926760,1931845,1936885,1947460,1956550,1962130,1966810,1969690,1972660,19 87060,1987690 2.1.7 Agriculture Because of the fertility of the soils in Dubuque County and the climate conditions, agricultural crops and livestock are important contributors to the economy of Dubuque County. According to the 2017 Census of Agriculture there were 1,402 farms in the County (down 60 from 2012), covering 313,476 acres of land (up 8% since 2012). Crop (82% of farmland) and livestock production (7%) are visible parts of the agricultural economy, but many related businesses contribute by producing, processing, and marketing farm and food products. These businesses generate income, employment, and economic activity throughout the region. Farms on average Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 23 were 224 acres, representing a 12% increase from 2012. Family farms account for 96% of farms in Iowa, and of the 2,448 total producers in Iowa, 2,445 are White. County agriculture and economy contributions are summarized in additional detail in Section3.2.2 of Chapter 3. 2.1.8 FEMA Hazard Mitigation Assistance Grants in Planning Area Since 2004, nearly $9.5 million in Hazard Mitigation Assistance grants has been awarded to subgrantees in Dubuque County. Table 2.5 provides details on the previous FEMA Hazard Mitigation Assistance grants in the planning area. Table 2.5. FEMA HMA Grants in Dubuque County from 1993-2024 Project Type Sub applicant Closeout Date Total Cost Property Acquisition City of Dyersville Open Now $250,000 Generator City of Dubuque $24,718 Property Acquisition City of Dyersville 8/17/2015 $2,616,374 Property Acquisition City of Sageville 4/9/2015 $1,517,536 Property Acquisition Dubuque County 9/2/2014 $740,229 Property Acquisition City of Dubuque 7/1/2014 $274,279 Generator City of Bernard 1/6/2014 $49,412 Tornado Safe Room Western Dubuque 9/11/2013 $989,354 Infrastructure City of Dubuque 2/1/2013 $1,914,249 Property Acquisition City of Dyersville 3/25/2005 $676,126 Property Acquisition City of Dubuque 1/21/2005 $268,795 Property Acquisition City of Sageville 1/21/2005 $121,498 Property Acquisition City of Dyersville 4/19/2004 $138,776 Property Acquisition City of Dubuque 3/15/2004 $118,585 Property Acquisition City of Dyersville 3/15/2004 $53,991 Total $9,753,922 Source: Iowa Homeland Security and Emergency Management Department. 2.1.9 Iowa Watershed Approach — Flood Resilience Program The Bee Branch Watershed that encompasses parts of Dubuque County is included in the Flood Resilience Program under the Iowa Watershed Approach (IWA). Dubuque's 6.5 square mile Bee Branch Watershed drains to the Bee Branch Creek and is located entirely within the city limits of Dubuque. This watershed area includes the city's most developed areas where over 50% of Dubuque residents either live or work. The watershed encompasses historic neighborhoods offering some of the community's most affordable workforce housing. This area is also hit hardest by flash flooding during significant rain events with much more than 'just a little water in the basement." Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 24 In January 2016, the U.S. Department of Housing and Urban Development (HUD) announced an award of nearly $97 Million to the state of Iowa for its proposal titled, The Iowa Watershed Approach for Urban and Rural Resilience. The award was made under HUD's National Disaster Resilience Competition designed to fund cutting -edge projects that address unmet needs from past disasters while addressing the vulnerabilities that could put Americans in harm's way during future disasters. The Iowa Watershed Approach (IWA) represents a program through which Iowans are working together to address factors that contribute to floods. This approach is consistent with other statewide programs in Iowa to reduce flooding and improve water quality, such as the Iowa Flood Mitigation Program and the Iowa Nutrient Reduction Strategy. Nine distinct watersheds representing different Iowa landforms will serve as project sites for the IWA. Each will form a Watershed Management Authority, develop a hydrologic assessment and watershed plan, and implement projects in the upper watershed to reduce the magnitude of downstream flooding and to improve water quality during and after flood events. Flood resilience programs will be implemented in each watershed to help increase community resilience to future floods. The nine project watersheds are: • Upper Iowa River Watershed —includes a portion of Howard County • Upper Wapsipinicon River Watershed —includes a portion of Howard County • Bee Branch Creek (Dubuque) Watershed • Middle Cedar River Watershed • Clear Creek Watershed • English River Watershed • North Raccoon River Watershed • East Nishnabotna River Watershed • West Nishnabotna River Watershed The IWA will accomplish six specific goals in each watershed: 1) reduce flood risk; 2) improve water quality; 3) increase flood resilience; 4) engage stakeholders through collaboration and outreach/education; 5) improve quality of life and health, especially for susceptible populations; and 6) develop a program that is scalable and replicable throughout the Midwest and the United States. Through the IWA Flood Resilience Program, a Flood Resilience Action Plan will be created for each watershed about how to prepare, mitigate, respond, and recover from flood events. This will help communities qualify for disaster mitigation funding during the 5-year project as well as recurring planning efforts required by the federal government. No one organization in Iowa has the capacity to implement the entire IWA program. Thus, IWA's success is dependent on the collaboration of many partners who helped to conceptualize the program and the many more who will help to develop and implement its many components. Funded partners and their roles or expertise include: • Iowa Economic Development Authority: Direct recipient of the HUD grant funds and overall program administration Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 25 • Homeland Security and Emergency Management: Aid in outreach and education activities for public resilience programs and development of planning documents and technical assistance • City of Dubuque: Implementation of watershed projects and Healthy Homes program in the Bee Branch • University of Iowa: Program lead for watershed projects implementation and monitoring (water quantity and quality), resilience programming, and assessment • Iowa State University: IWA outreach programming and monitoring of watershed projects success (soil erosion and transportation) • University of Northern Iowa: IWA outreach programming • Iowa Department of Natural Resources: Direct resource to watersheds for formation of watershed management authorities and capacity building • Iowa Department of Agriculture and Land Stewardship: Direct resource to watersheds for assistance with implementing watershed projects. • Cities of Coralville and Storm Lake: Implementation of built projects in their cities • Benton, Buena Vista, Fremont, Iowa, Johnson, Mills, Winneshiek, and Howard Counties: Fiscal agents for the work in their respective watersheds. Historical Flooding & Mitigation: Dubuque/Bee Branch Watershed Approach Details Many residents in the Bee Branch Watershed have experienced repeated flash flooding from stormwater during heavy rain events, including six Presidential Disaster Declarations since 1999. As a result, they are living with residual structural issues, electrical hazards, and chronic mold and mildew problems. The Bee Branch Healthy Homes Resiliency Program (BBHHRP) included $8.4 million awarded to properties where low- to moderate -income residents reside in the form of forgivable loans to make repairs and implement onsite stormwater management principles to decrease environmental health and safety issues from flooding. From October 2016 to June 2022, over 300 housing units in the Bee Branch Watershed were made more resilient including 114 single-family units, 23 duplexes, four quadplexes, three six -unit complexes, three seven -unit complexes, two twelve -unit complexes, two nineteen -unit complexes, and one thirty -unit complex. In addition to home repairs and improvements, BBHHRP participants had the opportunity to receive home advocacy support. This included a comprehensive assessment to identify health, economic, education, social, and built environment needs and assistance in creating a household resiliency plan. Home advocates then connected participants with community resources to meet their needs and goals. A total of 307 families received some level of advocacy support through the BBHH Program. The Bee Branch Watershed Flood Mitigation Project is a multi -faceted approach to addressing the severe and frequent flash flooding experienced in the watershed. The project consists of several infrastructure improvements that will reduce the volume of stormwater, slow the rate of stormwater through the upper watershed, increase the safe conveyance of stormwater through the flood -prone area, and provide floodwater protection to the City's water treatment plant on Hawthorne Street. Completed phases of the project include the Carter Rd. and W. 32nd St. upstream detention basins, over 80 permeable green alleys, the Bee Branch Creek Restoration Project which involved replacing almost one mile of storm sewer with a creek and floodplain to channel stormwater flooding safety through the flood -prone area, and several storm sewer capacity improvements including the 22nd St. / Kaufmann Ave. corridor, 17'1i St. / W. Locust Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 26 St. corridor, and the Bee Branch Creek Railroad Culverts Project. As each phase is completed there is more and more protection from flash flooding. After the completion of the Railroad Culverts Project in 2021, the area is now protected from up to a 500-year rain event. Future phases of the Bee Branch Watershed Flood Mitigation Project include a flood gate and pump replacement project, a flood mitigation maintenance facility, water plant flood protection, and additional storm sewer capacity improvements and permeable green alleys. To date, the City of Dubuque has received $163 million to help fund the $249.6 million project, including $55.5 million in state and federal grants. In 2016, the U.S. Department of Housing and Urban Development (HUD) awarded the City of Dubuque $31.5 million in disaster resiliency funds for the Bee Branch Healthy Homes Resiliency Program and stormwater infrastructure improvements including the West Locust Street and Kaufmann Avenue storm sewer projects and $9 million for the Bee Branch Creek Railroad Culverts. The City is also participating in multiple state funding programs. Through the State Revolving Fund (SRF) program, the Iowa Environmental Commission authorized the City to reallocate $9.4 million that was to be paid in interest on the loan associated with the Water and Resource Recovery Center upgrade project to instead be used to construct more than 70 green alleys in the Bee Branch Watershed. Additionally, in December 2013, the project was awarded $98.5 million from the Iowa Flood Mitigation Board in the form of state sales tax increment financing* spread over 20 years. This is the largest amount ever awarded to the City of Dubuque and will enable the City to issue debt to implement the comprehensive flood mitigation plan much sooner than previously anticipated at a lower cost to Dubuque citizens and businesses. Additional grant funding is being explored to expand the scope of the positive impact on Dubuque. The area near the bottom of the Bee Branch Creek near the intersection of Kaufmann Avenue and 22nd Street saw some of the worst flooding prior to the project. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 27 The Bee Branch as of 2023. 2.1.10 Dubuque County Major Highways U.S. Highway 20 crosses east west generally parallel to the south border. U.S. Highways 61 and 151, running north south, enter from the south and cross the Mississippi on the east. U.S. Highway 52 enters from the south near the Mississippi, west on Highway 20, and north through the county on State Highway 136. Numerous paved county roads connect all the incorporated cities and unincorporated villages throughout the county. • U.S. Highway 20 • U.S. Highway 52 • U.S. Highway 61 • U.S. Highway 151 • Iowa Highway 3 • Iowa Highway 32 • Iowa Highway 136 Additional details of transportation systems in Dubuque County are provided in Section 3.5.19, Transportation Incident. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 28 2.2 City/County Capabilities Unincorporated Dubuque County is governed by a three -member Board of Supervisors. Each incorporated city is governed by a five -member Mayor/City Council. Dubuque County has an active Emergency Management Commission that coordinates emergency management capabilities in the County. Dubuque County participates in the Emergency Notification System (CCENS), part of the Alert Iowa system contracted with Rave Mobile Safety. All jurisdictions within the County can utilize this service. 2.2.1.1 Unincorporated Dubuque County Description The unincorporated areas of Dubuque County are primarily agriculturally based. The topography varies through the County and the associated land capabilities drive the type of farm -based enterprises that operate in each location. Numerous major U.S. and state highways run through Dubuque County. The City of Dubuque is the major hub for the four -lane US Highway 20 that runs east west through Dubuque County extending into Iowa and Illinois. Four -lane US Highway 61 extends north and south from the City of Dubuque, extending into Wisconsin on the north and to the Quad Cities and beyond to the south. Four -lane U.S. Highway 151 extends from the City of Dubuque and into Wisconsin on the north and to Cedar Rapids and beyond to the southwest. U.S. Highway 52 west with Highway 20, using the Southwest Arterial, and then north again on Highway 136, generally following the Mississippi River and extending north from Dubuque County through Iowa into Minnesota and to the south through Bellevue and Sabula before entering Illinois. Land Use and Development Dubuque County contains a land area of 617 square miles, or 391,680 acres. The County has 17 townships and 21 incorporated cities. The City of Dubuque is the county seat and is located on the east edge of the county along the west bank of the Mississippi River. Dubuque County is ranked as the seventh most populated county in Iowa. There are three four -lane highways that provide access into the county: US Highway 20, US Highway 151, and U.S. Highway 61 South. Additionally, there are two main two-lane highways that provide access into and around the county: U.S. Highway 52 and Iowa Highway 136 which is on the west end of the county. These five highways provide access to three-quarters of the cities in the County. The Dubuque Regional Airport is in the County, south of the City of Dubuque. It is accessed by U.S. Highway 61 South and recently underwent a $40 million renovation for a new terminal and access road. There are seven county parks, six preserves and one state park and one preserve in the County. The County also operates one golf course and maintains 26 miles of a hike and bike trail called Heritage Trail that was part of an abandoned railroad right of way. Flooding occurs frequently in the County and affects mostly farm fields, roads, and bridges, including bridges along the Heritage Trail. These floods can be very costly so some of the old railroad bridges along Heritage Trail have been replaced by newer designs that allow the water to flow more freely and reduce flood damage. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 29 Agricultural Land Use The County's primary land use is agricultural and is found throughout the unincorporated areas of the County. The topography ranges from gently undulating relief in the southwest portion of the County, to hilly and steep relief in the north and eastern portions of the County. Along the Mississippi River and its tributaries, the topography is very steep and rugged, with high limestone bluffs and outcrops. Much of this area containing the steep terrain is heavily wooded. The steep landscape has restricted development and farming activities to some extent. About 20% of the single-family homes that have recently been built in the County have been placed on agricultural land. Residential Land Use Residential development in the County's unincorporated areas have generally occurred according to previously established development patterns and most recently is following the Future Land Use Development Map. Residential uses are primarily located near incorporated cities, along major highway and roadway corridors and are found in clusters up and down the Mississippi River. Most of the new residential growth in the County is occurring within 2-4 miles of the City of Dubuque and near the larger cities in the county, such as Cascade, Dyersville, Epworth, Farley and one of the fastest growing cities in the state, Peosta. Commercial Land Use Commercial development is located mostly along the highway corridors with most of the commercial uses found along U.S. Highways 151 and 61 south from the City of Dubuque to the Airport, along U.S. Highway 20 from the Dubuque City limits to Peosta and along U.S. Highway 3 from the City of Dubuque to Mud Lake Road. Industrial Land Use Industrial uses in Dubuque County are primarily located in three areas around the City of Dubuque. The first area is to the south along Highways 52, 151 and 61. Another industrial area is located west of the City of Dubuque along Highway 20. This area is mostly developed from the Dubuque city limits to Peosta. The third area is along Highway 3 North in the Couler Valley and Little Maquoketa River outlet to the Mississippi River. John Deere Dubuque is located just outside the flood plain of the Little Maquoketa River. Both the South and West commercial and industrial corridors have been affected by the recent opening of the four -lane highway, the Southwest Arterial that connects U.S. Highways 151/61 and U.S. Highway 20. Residential, commercial, and industrial development is occurring from the city limits on the southwest side of the City of Dubuque to beyond the Southwest Arterial, and on the north side of U.S. Highway 20, where the SW Arterial become Seippel Road. This change in land use has been noted in the Future Land Use Development Map. Comprehensive Land Use Development Plan and Map Dubuque County's Comprehensive Land Use Development Plan and Map is the community's guide to future development of the unincorporated areas of Dubuque County. The development plan and map guide development decisions made by the Board of Supervisors. The Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 30 Comprehensive Land Use Development Plan is not an ordinance. It contains the long-range goals and objectives for the County that were compiled after several public meetings and hearings to determine a community vision for the future of Dubuque County. The first Comprehensive Plan for the County was adopted on January 21, 1969, and was updated and readopted on September 23, 2002. The Comprehensive Plan was updated again in 2011- 2012 to incorporate the 10 Smart Planning Principles and 13 Comprehensive Planning Elements adopted by the State of Iowa during their last legislative session. This update aimed to further protect property in the County from flood hazards. The elements of the current Comprehensive Plan include: • Planning and Land Use Development • Natural, Environmental and Resource Management • Public Facilities and Services • Transportation • Future Land Use Development Map Land Use & Development Reported by Jurisdictions 2019 — 2023 • City of Dubuque 0 2023 — Annexation Resolution 116-23: 2.80 acres for Simmons pet food warehouse 0 2021 — Annexation Resolution 384-21: 206.76 acres for Crossroads Industrial Center + right-of-way where Highway 52 meets Highway 61/151 0 2020 — Annexation Resolution 240-20: 1.0 acre for City of Dubuque pump station adjacent to Silver Oaks 0 2020 — Annexation Resolution 239-20: 7.05 acers for Silver Oaks subdivision and 0.6 for Iowa DOT property. 0 2019 - Annexations Resolution 101-19: 28.5 acres of land west of English Mill Road, south of Southwest Arterial, and north of English Ridge subdivision. 0 2019 — Annexations Resolution 210-19: 108.0 acres of land • City of Dyersville o Field of Dreams annexation, residential development, Field of Dreams development and Phase 3 of Industrial Park. • City of Epworth o Development south of Highway 20, both residential and commercial • City of Farley o No annexations since 2019, but the Wildcat Subdivision with 25 residential lots was developed. About 50% have homes on lots. Some businesses have expanded, and there are still lots available in the industrial park. • City of Luxemburg o Phase 3 of city residential development and development of commercial area. • City of Peosta o 144 acres annexed east of Thunder Valley Road. And a 40-acre development along Highway 20, west of Cox Springs Road. • City of Worthington o Currently working with subdivision development located in the NW corner of the city on eight acres. Table 2.6 provides summary capability information for the unincorporated county and incorporated cities. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 31 Table 2.6. Mitigation Capabilities This Is ready but needs to be proofed. a� N > w y 7 o — r LO _N C 7 0 O fC M .i 3 C .y C >1 V E i .�+ > 'i t 7 C =, i Ul C .0 i y 3 N '� >+ N o Y N L MU CM W 0 C U a m m m U U o a a w Li CD x° _j z a ii rn c� N Planning Capabilities How many Full -Time employees? 450 20 0 0 0 14 0 599 0 0 5 6 0 0 1 1 17 0 0 0 2 0 Comprehensive Plan X X X X X X X X X X Capital Improvement Plan X X I X X X X X X X Local Emergency Plan x X X X X X X County Emergency Plan X X X X X X X X X X X X X X X X X X X X X X Local Recovery Plan County Recovery Plan X X X X X X X X X X X X X X X Local Mitigation Plan X X X X X County Mitigation Plan X X X X X X X X X X X X X X X X X X X X X X Debris Management Plan X X Economic Development Plan X X I X X Transportation Plan X X X X X Land -use Plan X X X X X X X Flood Mitigation Assistance (FMA) Plan Watershed Plan X X X X X Firewise or other fire mitigation plan X X X Critical Facilities Plan (Mitigation/Response/Recovery) X I I X IX I I X X Policies/Ordinance Zoning Ordinance X X X X I X X X X X X X X X X X Building Code X X X X X X X X X Floodplain Ordinance Subdivision Ordinance Tree Trimming Ordinance Nuisance Ordinance Storm Water Ordinance Drainage Ordinance Site Plan Review Requirement Historic Preservation Ordinance Landscape Ordinance Iowa Wetlands and Riparian Areas Conservation Plan X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X IX X IX IX IX X IX IX IX X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Ll Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 32 c � 3 O �° 3 O — cn >1 O 0 M M N M N 7 7 >> O_ U Q m CO m U U 0 0 0 w lL d C '> w c y a> L o x 3 0 0 m o C) 2 J Z eL 0' rn fn � N Program Zoning /Land Use Restriction X X X X X X X X X X X X X Codes Building Site/Design X X ff X X X X X X X X National Flood Insurance Program NFIP Participant X X X X X X X X X X X X X Hazard Awareness Program National Weather Service (NWS) Storm Ready X Building Code Effectiveness (BCEGS) X X ISO Fire Rating X X X X X X X X X X Economic Development Program X X X X X X Land Use Program X X X X X X X X Public Education/Awareness X X X X X X X Property Acquisition X X X X I X Planning/ZoningPlanning/Zoning Boards X X I X X X X X X X X Stream Maintenance Program X X X X Tree Trimming Program X X X X Engineering Studies for Streams (Local/County/Regional)X X X X X Mutual Aid Agreements X X X X X X X X X X X X X X X X Stud ies/Reports/Maps Hazard Analysis/Risk Assessment (Local) X Hazard Analysis/Risk Assessment Count X X X X X X X X X X X X X X X X X X X X X X Flood Insurance Maps X X X X X X X X X X X X X X X FEMA Flood Insurance Study Detailed X X X X Evacuation Route Map X X Critical Facilities Inventory X X X X X X X X Vulnerable Population Inventory X Land Use Map X X X X X X Staff/Department Building Code Official X X X 1xx Building Inspector X X X X Mapping Specialist (GIS) X X X I X I X X Engineer X X X X X Development Planner X X X Public Works Official X X X X X X X X X X X X X X Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 33 c � 3 0 �° 3 0 — cn >1 O 0 M M N M N 7 7 >> Q M U Q m m m U U o 0 o W li d C '> w c y M° -0 m - - c m L o x 3 0 00 m o C9 x � z a W rn (n�: N Emergency Management Coordinator X X X X X Bomb and/or Arson Squad Emergency Response Team X X X X X X X Hazardous Materials Expert X Fire Department X X X X X X X X X X X Law Enforcement X X X X X X X X County Emergency Management Commission X X X X X X X X X X X X X X X X X X X X X X Sanitation Department X X X X Transportation Department X Economic Development Department X Housing Department X Planning Consultant X rX 1XX Regional Planning Agencies X IX X X X X X X EX X X X X X X X X X X Historic Preservation X American Red Cross X Salvation Army X X Veterans Groups X X I I I X Environmental Organization X X X Homeowner Associations X X Neighborhood Associations X X Chamber of Commerce X X X X Community Organizations (Lions, Kiwanis, etc. X X X X X X Financial Resources Apply for Community Development Block Grants X X X X X X Fund projects through Capital Improvements funding X X X X X X Authority to levy taxes for specific purposes X X X X X X X Fees for water, sewer, gas, or electric services X X X X X X X Impact fees for new development X X X X X Incur debt through general obligation k bonds X X X X X Incur debt through special tax bonds X X X X X X Incur debt through private activities X X X X X Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 34 c m y a� c d > C .. �` 0 0 3 a 0> a ° t> E d > yaL > c= o m M w >+ 3 a a x 3 .. 0 0 d o o N M M N M N >. a M L o= d d M s •� 3 U Q m m m c) c) 0 a a w u_ a x � z a-� 0 CO N Withhold spending in hazard prone IX IX areas X X 2.3 Public School District Profiles and Mitigation Capabilities This section includes general profile information for two Dubuque County school districts. The school districts with buildings in the planning area are as follows. • Dubuque Public School District • Western Dubuque Public School District Portions of other school district boundaries may extend into Dubuque County from adjacent counties. However, there are no buildings associated with these school districts in Dubuque County. Figure 2.5 provides the boundaries of the school districts in Dubuque County and Table 2.10 provides location and enrollment information for each school district. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 35 Figure 2.5. Dubuque County, Iowa Public School Districts Figure 2.5 Dubuque County, Iowa School Districts Legend of _ ejaj'%pn City boundaries County Boundaries — _ Highway Clayton Clayton {, ranF ~ Road , — — Railroad Delaware Dubuque BALLTO Q44 U94e Parks sx � Water 1 School Distriot5 _w 3-LUXEMBURG. HOLY ® Dutruque CW �..CROS5_ _ - I I ®Maquoketa Csh RICIC4R0S� 3 . l ® Monticello CSD • western Dubuque CSD U AN ` NEW 1 VIENNA SAGEVILIE 1 sx� BANKSTON ASBURY DUBt1QUE Grant ')YE_RSJILLE If ;_I f r zo ]o Daviess F CENTRRLL4 7i 7 + �■ — � r I ^A 1 20 52 57 __ 1 �PWBRTH- •. -- r-PE9TA FA�f7' 6 O ap � WORTt11NGTON 5 �ji q4` s` f 00 BERNARD 1�►�j�j�����������j ��� Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 36 Table 2.10. Dubuque County School Buildings and Enrollment Data, 2023-2024 School Total Enrollment Dubuque ABC Learning Preschool 22 Audubon Elementary School 234 Bryant Elementary School 302 Carver Elementary School 519 Dubuque Child Care Center 9 Dubuque Online School 209 Dubuque Senior High School 1443 Eisenhower Elementary School 535 Eleanor Roosevelt Middle School 1123 Frog Hollow Kid Campus Preschool 14 George Washington Middle School 649 Grand View Methodist Preschool 9 Hempstead High School 1685 Hills & Dales Preschool 9 Holy Ghost Preschool 38 Hoover Elementary School 313 Irving Elementary School 431 John Kennedy Elementary School 574 Key West ECC 26 La Salle Catholic High School 40 Lincoln Elementary School 249 Little Leaps Learning Preschool 21 Marshall Elementary School 297 Mazzuchelli Middle School 370 Mercy Child Development Center 35 Mini Masterpieces Preschool 13 Noah's Ark Preschool 19 Our Lady of Guadalupe 299 Our Redeemer Preschool 24 Prescott Elementary School 267 Resurrection Preschool 279 Sageville Elementary School 291 St Joseph The Worker Preschool 33 St. Columbkille School 291 Table Mound Elementary School 399 Thomas Jefferson Middle School 517 Tri-State Christian School 116 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 37 University of Dubuque Child Care Center 16 Wahlert Catholic High School 482 Y Creative Learning Ctr 7 Young Uns Children Ctr 60 Western Dubuque A uin Elementary 223 A uin Preschool 20 Beckman Catholic High School 415 Cascade Elementary School 279 Cascade Junior -Senior High School 381 Drexler Middle School 641 Dyersville Elementary School 335 E worth Elementary School 397 Farley Elementary School 266 LaSalle Catholic School Preschool 14 NICC Child Development Center 11 Peosta Elementary School 389 St. Francis Xavier Elementary 351 St. Francis Xavier Preschool 38 Seton Catholic Preschool 31 Seton Catholic Elementary — Farley146 Seton Catholic Elementary — Peosta 367 Western Dubuque High School 935 Source: Iowa Department of Education, Bureau of Planning, Research and Evaluation. Potential capabilities to implement mitigation programs and projects can vary among school districts. To determine mitigation capabilities, each of the participating school districts completed a Data Collection Guide to report planning, personnel, fiscal, and other capabilities related to implementation of mitigation programs and projects. Table 2.11 provides a summary of the reported capabilities for each participating school district Table 2.11. Summary of Mitigation Capabilities, Dubuque County Public School Districts Capability Dubuque School District Western Dubuque School District Planning Elements Master Plan Yes Yes Capital Improvement Plan Yes Yes School Emergency Plan Yes Yes Personnel Resources Full-time building official (i.e., principal) Yes Yes Emergency Manager Yes Yes Grant Writer Yes Yes Public Information Officer Yes Yes Financial Resources Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 38 Capital Improvements project funding Yes Yes Local funds Yes Yes General obligation bonds Yes Yes Special Tax bonds Yes Yes Capability Dubuque School District Western Dubuque School District Planning Elements Private activities/donations Yes Yes State and federal funds Yes Yes NOAA Weather Radios Yes Yes Tornado Shelter/Saferoom Yes Yes Anticipated Enrollment Increase Next 5 Years No No Source: Data Collection Guides completed by School Officials and City of Dubuque staff. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 39 3 RISK ASSESSMENT 44 CFR Requirement §201.6(c)(2): [The plan shall include] A risk assessment that provides the factual basis for activities proposed in the strategy to reduce losses from identified hazards. Local risk assessments must provide sufficient information to enable the jurisdiction to identify and prioritize appropriate mitigation actions to reduce losses from identified hazards. The risk assessment process identifies and profiles relevant hazards and assesses the exposure of lives, property and infrastructure within Dubuque County, Iowa to these hazards. The goal of the risk assessment is to estimate the potential loss in the planning area, including loss of life, personal injury, property damage and economic loss, from a hazard event. The risk assessment process allows communities in the planning area to better understand their potential risk to the identified hazards and provides a framework for developing and prioritizing mitigation actions to reduce risk from future hazard events. The risk assessment for Dubuque County and participating jurisdictions followed the methodology described in the 2023 FEMA Local Mitigation Planning Handbook, which includes a five -step process: Step 1—Identify Hazards Step 2 -- Describe Hazards Step 2—Identify Assets Step 3—Analyze Impacts Step 4—Summarize Vulnerability This chapter is divided into six main parts: • Section 3.1 Hazard Identification identifies the hazards that threaten the planning area and the methodology utilized to score or rank the hazards; • Section 3.2 Assets at Risk provides the planning area's total exposure to natural hazards, considering critical facilities and other community assets at risk; • Section 3.3 Development Since 2019 Plan Update discusses what changes in development have occurred since the previous Hazard Mitigation Plan; • Section 3.4 Future Land Use and Development discusses areas of planned future development; • Section 3.5 Hazard Profiles and Vulnerability for each hazard, this section is divided into two parts: 1) Hazard Profile discusses the threat to the planning area, the geographic location/extent at risk, previous occurrences of hazard events and probability of future occurrence; and 2) Vulnerability Assessment further discusses specific assets at risk as well as loss estimates. Specifically, where data is available, this section defines and quantifies populations, buildings, critical facilities, and other community assets at risk to natural hazards with estimates of potential losses to those assets, where possible; • Section 3.6 Hazard Analysis Summary provides a tabular summary of the hazard ranking for each jurisdiction in the planning area. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 40 3.1 Hazard Identification Requirement §201.6(c)(2)(i): [The risk assessment shall include a] description of the type ... of all natural hazards that can affect the jurisdiction. The hazards identified for this plan update are listed below in alphabetical order • Animal/Plant/Crop Disease • Dam/Levee Failure • Drought • Expansive Soils • Extreme Heat • Flash Flood • Grass/Wildland Fire • Hazardous Materials • Human Disease • Infrastructure Failure • Landslide • Radiological Incident • River Flooding • Severe Winter Storm • Sinkholes • Terrorism • Thunderstorm/Lightning/Hail • Tornado/Windstorm • Transportation Incident Sections 3.1.1 through 3.1.3 describe how these hazards were identified for this plan update. 3.1.1 Review of Existing Mitigation Plans Prior to 2012, Hazard Mitigation Planning in Dubuque County was implemented on a jurisdictional basis. In 2012 the unincorporated county and incorporated municipalities came together to coordinate Multi -Jurisdictional mitigation planning for the entire Dubuque County planning area. This coordinated effort resulted in the Dubuque County, Iowa Multi -Jurisdictional Hazard Mitigation Plan, approved by FEMA on February 28, 2014. To identify hazards to include in the Risk Assessment update, a comparison was performed between the hazard identification in the 2018 Iowa State Hazard Mitigation Plan and the 2024 Dubuque County Multi -Jurisdictional Hazard Mitigation Plan. Table 3.1 provides the details of the comparison. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 41 Table 3.1. Hazard Comparison Chart 2018 State Plan 2024 Dubuque County Plan Natural Hazards Animal/Crop/Plant Disease Animal/Crop/Plant Disease Dam/Levee Failure Dam/Levee Failure Drought Drought Earthquake Earthquake Expansive Soils Expansive Soils Extreme Heat Extreme Heat Flash Flooding Flash Flooding River Flooding River Flooding Grass or Wildland Fire Grass or Wildland Fire Landslide Landslide Severe Winter Storms Severe Winter Storms Sinkholes Sinkholes Thunderstorm/Lightning/Hail Thunderstorm/Lightning/Hail Tornado/Windstorm Tornado/Windstorm Technological Hazards Hazardous Materials Hazardous Materials Human Disease Human Disease Infrastructure Failure Infrastructure Failure Radiological Radiological Transportation Incident Transportation Incident Human Caused ITerrorism Terrorism 3.1.2 Review Disaster Declaration History Information utilized to identify hazards relevant for Dubuque County was obtained by examining events that triggered federal disaster declarations. Federal and/or state declarations may be granted when the severity and magnitude of an event surpasses the ability of the local government to respond and recover. Disaster assistance is supplemental and sequential. When the local government's capacity has been surpassed, a state disaster declaration may be issued, allowing for the provision of state assistance. If the disaster is so severe that both the local and state governments' capacities are exceeded; a federal emergency or disaster declaration may be issued allowing for the provision of federal assistance. FEMA also issues emergency declarations, which are more limited in scope and do not include the long-term federal recovery programs of major disaster declarations. Determinations for declaration type are based on scale and type of damage and institutions or industrial sectors affected. Table 3.2 lists federal disaster declarations that included Dubuque County for the period from 1965 to 2023. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 42 Table 3.2. Disaster Declarations that included Dubuque County, Iowa, 1965-2023 Disaster Number Declaration Date Incident Type Title Incident Begin Date Incident End Date DR-4732 8/25/2023 Flood Flooding 4/24/23 5/13/23 DR-4642 2/23/22 Severe Storm Severe Storms, Straight-line Winds, & Tornadoes 12/15/21 12/15/21 Dr-4557 8/17/20 Severe Storm Severe Storms 8/10/20 8/10/20 DR-4483 3/23/20 Biological Covid-19 Pandemic 3/17/20 5/11/23 DR-4334 8/27/2017 Severe Storm Severe Storms, Tornadoes, Straight-line Inds, and Flooding 7/19/2017 7/23/2017 DR-4018 8/30/2011 Severe Storm Severe Storms & Flooding 7/27/2011 7/29/2011 DR-1930 7/29/2010 Severe Storm Severe Storms, Flooding, & Tornadoes 6/1/2010 8/31/2010 DR-1763 5/27/2008 Severe Storm Severe Storms, Tornadoes, & Flooding 5/25/2008 8/13/2008 DR-3239 9/10/2005 Hurricane Hurricane Katrina Evacuation 8/29/2005 10/1/2005 DR-1518 5/25/2004 Severe Storm Severe Storms, Tornadoes, & Flooding 5/19/2004 6/24/2004 DR-1420 6/19/2002 Flood Severe Storms & Flooding 6/3/2002 6/25/2002 DR-1367 5/2/2001 Severe Storm Severe Storms, Tornadoes & Flooding 4/8/2001 5/29/2001 DR-1277 5/21/1999 Severe Storm Severe Storms, Flooding, & Tornadoes 5/16/1999 5/29/1999 DR-996 7/9/1993 Flood Severe Storms & Flooding 4/13/1993 10/1/1993 DR-443 6/24/1974 Flood Severe Storms & Flooding 6/24/1974 6/24/1974 DR-386 5/23/1973 Flood Severe Storms & Flooding 5/23/1973 5/23/1973 DR-354 9/26/1972 Flood Severe Storms & Flooding 9/26/1972 9/26/1972 DR-348 8/18/1972 Flood Severe Storms & Flooding 8/18/1972 8/18/1972 DR-269 8/14/1969 Flood Heavy Rains & Flooding 8/14/1969 8/14/1969 DR-259 4/25/1969 Flood Flooding 4/25/1969 4/25/1969 DR-193 4/22/1965 Flood Flooding 4/22/1965 4/22/1965 Source: Federal Emergency Management Agency. The U.S. Department of Agriculture's Secretary of Agriculture is authorized to designate counties as disaster areas to make emergency loans (EM) to producers suffering losses in those counties, and in counties that are contiguous to a designated county. In addition to EM eligibility, other emergency assistance programs, such as Farm Service Agency (FSA) disaster assistance programs, have historically used disaster designations as an eligibility requirement trigger. Table 3.3 provides the USDA Secretarial disaster declarations that included Dubuque County from 2012 to August 2023. Details on USDA declarations prior to 2012 are not available. The Table 3.3. USDA Secretarial Disaster Declarations Including Dubuque Co. (2012-April 2023) d s ds } E M t c= p c L7 = O >« d N N 10 —0 p N N Z C 7 G! L w L a — .... 'O fq ` N U N County N O ) LL WdEE ✓ c 0 cN a wr ° m d a rn y x 3 ii = rn LL oO y pU M = _ Dubuque 12012 S32641 01 0 0 0 0 01 1 0 4/6/2012 Frosts, Freezes Dubuque 2012 S33051 11 0 0 1 1 1 0 1 7/17/2012 Drought -FAST TRACK Dubuque 2012 S3310 1 0 0 1 1 1 0 1 7/24/2012 Drought- FAST TRACK Dubuque 2012 S3311 1 0 0 1 1 1 0 1 7/24/2012 Drought- FAST TRACK Dubuque 2019 S4508 0 1 1 0 0 0 0 0 9/1/2018 Excessive moisture, flooding, and flash flooding Dubuque 2020 S4786 0 0 0 11 0 0 0 0 8/10/2020 Derecho Dubuque 2021 S5084 1 01 01 01 01 0 01 0 8/3/2021 Drought- FAST TRACK Source: U.S. Department of Agriculture. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 43 3.1.3 Research Additional Sources Additional data on locations and past impacts of hazards in the planning area was collected from the following sources: • Dubuque County Flood Insurance Rate Map, FEMA • Dubuque County Emergency Management • Dubuque County Flood Insurance Study, FEMA • Dubuque County Multi -Jurisdictional Hazard Mitigation Plan, 2019 • Data Collection Guides completed by each jurisdiction • Environmental Protection Agency • Federal Emergency Management Agency (FEMA) • Flood Insurance Administration • Hazards US (HAZUS) • Iowa Department of Agriculture and Land Stewardship, Division of Soil Conservation • Iowa Department of Education, Bureau of Information and Analysis Services • Iowa Department of Natural Resources • Iowa Department of Public Safety • Iowa Department of Transportation, Office of Traffic and Safety • Iowa State Hazard Mitigation Plan (September 2018) • Iowa Utilities Board • National Drought Mitigation Center Drought Reporter • National Oceanic and Atmospheric Administration's (NOAA) National Climatic Data Center • Pipeline and Hazardous Materials Safety Administration • SILVIS Lab, Department of Forest Ecology and Management, University of Wisconsin • U.S. Army Corps of Engineers • U.S. Department of Agriculture's (USDA) Risk Management Agency Crop Insurance Statistics • U.S. Department of Transportation • United States Geological Survey • Various articles and publications available on the internet (sources are indicated where data is cited) Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 44 3.1.4 Hazards Identified Through the hazard identification review process, it was determined that the following natural and human-caused/technological hazards have the potential to significantly affect the planning area and were chosen for further analysis in the risk assessment. The hazards identified for this plan update are listed below in alphabetical order. • Animal/Plant/Crop Disease • Dam/Levee Failure • Drought • Expansive Soils • Extreme Heat • Flash Flood • Grass/Wildland Fire • Hazardous Materials • Human Disease • Infrastructure Failure • Landslide • Radiological Incident • River Flooding • Severe Winter Storm • Sinkholes • Terrorism • Thunderstorm/Lightning/Hail • Tornado/Windstorm • Transportation Incident Of the 20 hazards identified in the 2018 State Hazard Mitigation Plan, the following was eliminated from further review: • Earthquake —The planning area is in a low -risk zone for earthquakes (Source: USGS; DNR). According to the planning committee, no real impacts experienced or expected; this hazard was not included in the 2019 Dubuque County Hazard Mitigation Plan. Additionally, to maintain consistency and to facilitate the roll -up or summarization of hazards in the next State Plan Update, it was agreed that the hazard grouping/hazard naming for this update will be consistent with the 2018 State Plan. 3.1.5 Multi -Jurisdictional Risk Assessment For this Multi -Jurisdictional plan, the risks are assessed for each jurisdiction where they deviate from the risks facing the entire planning area. The planning area is uniform in terms of climate and topography as well as building construction characteristics. Accordingly, the geographic areas of occurrence for weather -related hazards do not vary greatly across the planning area for most hazards. The more urbanized areas within the planning area have more assets that are vulnerable to weather -related hazards and varied development trends impact the future vulnerability. Similarly, more rural areas have more assets (crops/livestock) that are vulnerable to drought. These differences are discussed in greater detail in the vulnerability sections of each hazard. Although 19 hazards with the potential to significantly affect the planning area were identified and selected for additional analysis, not all hazards impact every jurisdiction. Table 3.4 provides a summary of the jurisdictions impacted by each hazard. An 'Y' indicates the jurisdiction is impacted by the hazard. A "N/A" indicates the hazard is not applicable to that jurisdiction. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 45 Table 3.4. Hazards Identified for Each Jurisdiction Jurisdiction d c — �a � y c c c ❑ Q i U) to i _ C m 'a E L s E 0 N U.L O r d LL V O CO J r O C m O COm N d i la y a) O_ E L C 0 L N >_ a) O O Ul O N ❑ ... 3 t1 a1 0 O OWE w i O !0 O l6 LL E C la LL N N N fC E to i .y O_ L d L' t `p M U) O • C l6 O L Q x w x O L l3 3 `� C J > � r >= 7 i fC Q G ❑ W Lu C7 2 2 a: 0� CO N H H H H Unincorporated X X X X X X X X X X X X X X X X X X X Dubuque Count Asbury X N/A X X X X X X X X X X X X X X X X X Balltown X N/A X X X X X X X X X X N/A X X X X X X Bankston X N/A X X X X X X X X X X N/A X X X X X X Bernard X N/A X X X X X X X X X X X X X X X X X Cascade X X X X X X X X X X X X X X X X X X X Centralia X N/A X X X X X X X X X X N/A X X X X X X Dubuque X X X X X X X X X X X X X X X X X X X Durango X N/A X X X X X X X X X X X X X X X X X Dyersville X N/A X X X X X X X X X X X X X X X X X Epworth X N/A X X X X X X X X X X X X X X X X X Farley X N/A X X X X X X X X X X X X X X X X X Graf X N/A X X X X X X X X X X X X X X X X X Holy Cross X N/A X X X X X X X X X X N/A X X X X X X Luxemburg X N/A X X X X X X X X X X X X X X X X X New Vienna X N/A X X X X X X X X X X X X X X X X X Peosta X N/A X X X X X X X X X X X X X X X X X Rickardsville X N/A X X X X X X X X X X X X X X X X X Sageville X N/A X X X X X X X X X X X X X X X X X Sherrill X N/A X X X X X X X X X X N/A X X X X X X Worthington X N/A X X X X X X X X X X X X X X X X X Zwingle X N/A X X X X X X X X X X X X X X X X X Dubuque CSD X N/A X X X X X X X X X X X X X X X X X Western X N/A X X X X X X X X X X X X X X X X X Dubuque CSD 3.1.6 Hazard Scoring Methodology To maintain reporting format consistent with the 2018 Iowa State Hazard Mitigation Plan, the Dubuque County Hazard Mitigation Planning Committee (HMPC) used the same methodology to score and prioritize the hazards. This prioritization was based on a hazard scoring system that considers four elements of risk: probability, magnitude/severity, warning time, and duration. Table 3.5 provides definitions for each of the four elements along with associated rating levels. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 46 Table 3.5. Hazard Score Element Definitions and Rating Scales Element/Score Definitions Probability: Reflects the likelihood of the hazard occurring again in the future, considering both the hazard's historical occurrence and the projected likelihood of the hazard occurring in any given year. 1—Unlikely Less than 10% probability in any given year (up to 1 in 10 chance of occurring), history of events is less than 10% likely or the event is unlikely but there is a possibility of its occurrence. 2—Occasional Between 10% and 20% probability in any given year (up to 1 in 5 chance of occurring), history of events is greater than 10% but less than 20% or the event could possibly occur. 3—Likely Between 20% and 33% probability in any given year (up to 1 in 3 chance of occurring), history of events is greater than 20% but less than 33% or the event is likely to occur. 4—Highly Likely More than 33% probability in any given year (event has up to a 1 in 1 chance of occurring), history of events is greater than 33% likely or the event is highly likely to occur. Magnitude / Severity: Assessment of severity in terms of injuries and fatalities, personal property, and infrastructure and the degree and extent with which the hazard affects the jurisdiction. 1—Negligible Less than 10% of property severely damaged, shutdown of facilities and services for less than 24 hours, and/or injuries /illnesses treatable with first aid. 2—Limited 10% to 25% of property severely damaged, shutdown of facilities and services for more than a week, and/or injuries/illnesses that do not result in permanent disability. 3—Critical 25% to 50% of property severely damaged, shutdown of facilities and services for at least 2 weeks, and/or injuries/illnesses that result in permanent disability. 4—Catastrophic More than 50% of property severely damaged, shutdown of facilities and services for more than 30 days, and/or multiple deaths. Warning Time: Rating be taken as an average of the potential amount of warning time that is available before the hazard occurs. This should warning time. 1 More than 24 hours warning time 2 More than 12 to 24 hours warning time 3 6 to 12 hours warning time 4 Minimal or no warning time (up to 6 hours warning) Duration: A measure of the duration of time that the hazard will affect the jurisdiction. 1 Less than 6 hours 2 Less than 1 day 3 Less than 1 week 4 More than one week Using the rating scales described in the table above, the formula used to determine each hazard's score, including weighting factors, is provided below: (Probability x .45) + (Magnitude/Severity x .30) + (Warning Time x .15) + (Duration x .10) = SCORE Based on the hazard's overall weighted score, the hazards are categorized as follows: High (3.0-4.0), Moderate (2.0-2.9), and Low (1.0-1.9). These terms relate to the level of planning analysis to be given to the hazard in the risk assessment process and are not meant to suggest that a hazard would have only limited impact. To focus on the most critical hazards, those assigned a level of high or moderate were given more extensive attention in the remainder of the risk assessment (e.g., quantitative analysis or loss estimation), while those with a low planning significance were addressed in more general or qualitative ways. The HMPC determined overview hazard ranking scores for the planning area. The results of this overview are provided below in Table 3.6. Additionally, the hazard ranking overview is provided at Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 47 the beginning of each hazard profile and vulnerability section. Compared to rankings in the 2019 plan, seven fewer hazards were ranked with a Planning Significance of "High"; one fewer was ranked as "Moderate", while six more than in 2019 were ranked as having a "Low" Planning Significance. A detailed hazard summary by jurisdiction is provided at the conclusion of each hazard profile and vulnerability section to provide a summary of how the hazard varies by jurisdiction. Table 3.6. Dubuque County Planning Area Hazard Ranking Results Hazard Probability Magnitude Warning Time Duration CPRI Planning Significance Tornado/Windstorm 4 3 3 3 3.45 High Thunderstorm/Lightning/Hail 4 2 3 2 3.05 High Severe Winter Storm 4 2 1 3 2.85 Moderate Flash Flood 3 2 4 2 2.75 Moderate Drought 3 2 1 4 2.50 Moderate Transportation Incident 3 1 4 2 2.45 Moderate Extreme Heat 3 2 1 3 2.40 Moderate Hazardous Materials 2 2 4 3 2.40 Moderate Infrastructure Failure 2 2 4 3 2.40 Moderate River Flooding 3 1 1 4 2.20 Moderate Human Disease 2 2 1 4 2.05 Moderate Grass/Wildland Fire 2 1 4 1 1.90 Low Radiological Incident 1 1 4 4 1.75 Low Terrorism 1 1 4 4 1.75 Low Landslide 1 1 4 1 1.45 Low Sinkholes 1 1 4 1 1.45 Low Animal/Plant/Crop Disease 1 1 1 4 1.30 Low Dam/Levee Failure 1 1 1 4 1.30 Low Expansive Soils 1 1 1 4 1.30 Low 3.1.7 Climate Change In accordance with FEMA Administrator Policy 2011-OPPA-01, where possible, this plan update has considered the potential impacts of climate change on the hazards profiled. In 2010, the Iowa Climate Change Advisory Council reported to the Governor and the Iowa General Assembly on Climate Change Impacts in Iowa. The Report summarized the following climate changes Iowa is already experiencing. More Precipitation • Increased frequency of precipitation extremes that lead to flooding. • Increase of 8 percent more precipitation from 1873 to 2008. • A larger increase in precipitation in eastern Iowa than in western Iowa. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 48 Higher Temperatures • Long-term winter temperatures have increased six times more than summer temperatures. • Nighttime temperatures have increased more than daytime temperatures since 1970. • Iowa's humidity has risen substantially, especially in summer, which now has 13 percent more atmospheric moisture than 35 years ago as indicated by a 3 - 5-degree F rise in dew - point temperature. This fuels convective thunderstorms that provide more summer precipitation. Agricultural Challenges • Climate extremes, not averages, have the greater impact on crop and livestock productivity. • Increased soil erosion and water runoff. • Increased challenges associated with manure applications. • Favorable conditions for survival and spread of many unwanted pests and pathogens. Habitat Changes • Plants are leafing out and flowering sooner. • Birds arrive earlier in the spring. • Particular animals are now being sighted farther north than in the past. Public Health Effects • Increases in heart and lung programs from increasing air pollutants of ozone and fine particles enhanced by higher temperatures. • Increases in infectious diseases transmitted by insects requiring a warmer, wetter climate. • An increase prevalence of asthma and allergies. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 49 3.2 Assets at Risk This section assesses the population, structures, critical facilities and infrastructure, and other important assets in the planning area that may be at risk to hazards. 3.2.1 Total Exposure of Population and Structures Unincorporated County and Incorporated Cities Table 3.7 shows the total population and building / improvement counts and assessed values for the unincorporated county and each city in the planning area broken out by usage type. The methodology employed to extract the summary of building/improvement counts and values from the parcel data is provided below: • Parcel values that had an associated dwelling or improvement value were used as the structure file. • Parcel polygons were converted to points. • Parcel points were spatially joined to the political area (jurisdiction). Population data is based on the 2020 U.S. Census Bureau data. Building counts and building exposure values are based on parcel data and assessed values provided by Dubuque County. The contents exposure values were calculated based on usage type. The contents multipliers were derived from the HAZUS and are defined below Table 3.7. Land values have been purposely excluded from the tables because land remains following disasters, and subsequent market devaluations are frequently short term and difficult to quantify. Additionally, state and federal disaster assistance programs generally do not address loss of land or its associated value (other than crop insurance). Table 3.7. Population and Building Exposure by Jurisdiction -Unincorporated County and Incorporated Cities Jurisdiction Property Class Parcel Counts Improved Value Content Value Total Value Agriculture 3 $536,700 $536,700 $1,073,400 Commercial 25 $9,115,400 $9,115,400 $18,230,800 Commercial Exempt 22 $13,671,300 $13,671,300 $27,342,600 Asbury 5,943 Multi -Residential 22 $38,861,700 $19,430,850 $58,292,550 Residential 2,047 $597,112,300 $298,556,150 $895,668,450 Residential Exempt 2 $496,100 $248,050 $744,150 Total 2,121 $659,793,500 $341,558,450 $1,001,351,950 Commercial 2 $804,500 $804,500 $1,609,000 Balltown Commercial Exempt 2 $341,500 $341,500 $683,000 79 Residential 32 $5,593,200 $2,796,600 $8,389,800 Total 36 $6,739,200 $3,942,600 $10,681,800 Agriculture 3 $568,300 $568,300 $1,136,600 Commercial 1 $145,100 $145,100 $290,200 Bankston 23 Commercial Exempt 1 $751,200 $751,200 $1,502,400 Residential 9 $1,189,500 $594,750 $1,784,250 Total 14 $2,654,100 $2,059,350 $4,713,450 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 50 Jurisdiction Property Class Parcel Counts Improved Value Content Value Total Value Agriculture 4 $284,500 $284,500 $569,000 Commercial 14 $548,100 $548,100 $1,096,200 Bernard 114 Commercial Exempt 2 $219,000 $219,000 $438,000 Residential 48 $5,396,500 $2,698,250 $8,094,750 Total 68 $6,448,100 $3,749,850 $10,197,950 Commercial 126 $24,137,200 $24,137,200 $48,274,400 Commercial Exempt 37 $20,203,700 $20,203,700 $40,407,400 Cascade Industrial 17 $13,750,400 $20,625,600 $34,376,000 2,386 Multi -Residential 18 $13,772,200 $6,886,100 $20,658,300 Residential 724 $132,315,100 $66,157,550 $198,472,650 Residential Exempt 1 $193,100 $96,550 $289,650 Total 923 $204,371,700 $138,106,700 $342,478,400 Agriculture 10 $1,393,700 $1,393,700 $2,787,400 Commercial 3 $418,200 $418,200 $836,400 Centralia Commercial Exempt 2 $19,600 $19,600 $39,200 116 Multi -Residential 4 $303,700 $151,850 $455,550 Residential 38 $6,962,900 $3,481,450 $10,444,350 Total 57 $9,098,100 $5,464,800 $14,562,900 Agriculture 23 $4,117,800 $4,117,800 $8,235,600 Commercial 2,486 $1,793,923,100 $1,793,923,100 $3,587,846,200 Commercial Exempt 262 $225,600 $225,600 $451,200 Dubuque 59,667 Industrial 130 $143,300,100 $214,950,150 $358,250,250 Multi -Residential 648 $335,634,700 $167,817,350 $503,452,050 Residential 20,822 $3,386,416,700 $1,693,208,350 $5,079,625,050 Total 24,371 $5,663,618,000 $3,874,242,350 $9,537,860,350 Commercial 5 $207,900 $207,900 $415,800 Durango 20 Residential 8 $971,400 $485,700 $1,457,100 Total 13 $1,179,300 $693,600 $1,872,900 Agriculture 8 $1,405,500 $1,405,500 $2,811,000 Commercial 202 $62,367,100 $62,367,100 $124,734,200 Commercial Exempt 50 $33,862,900 $33,862,900 $67,725,800 Dyersville Industrial 34 $27,494,500 $41,241,750 $68,736,250 4,477 Multi -Residential 21 $23,945,200 $11,972,600 $35,917,800 Residential 1,600 $319,766,200 $159,883,100 $479,649,300 Residential Exempt 1 $321,500 $160,750 $482,250 Total 1,916 $469,162,900 $310,893,700 $780,056,600 Agriculture 13 $1,753,800 $1,753,800 $3,507,600 Commercial 47 $7,812,400 $7,812,400 $15,624,800 Epworth 2,023 Commercial Exempt 16 $24,430,600 $24,430,600 $48,861,200 Industrial 1 $171,500 $257,250 $428,750 Multi -Residential 7 $1,562,000 $781,000 $2,343,000 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 51 Jurisdiction Property Class Parcel Counts Improved Value Content Value Total Value Residential 652 $143,125,900 $71,562,950 $214,688,850 Residential Exempt 1 $416,900 $208,450 $625,350 Total 737 $179,273,100 $106,806,450 $286,079,550 Agriculture 2 $693,000 $693,000 $1,386,000 Commercial 79 $21,228,900 $21,228,900 $42,457,800 Farley Commercial Exempt 18 $15,275,300 $15,275,300 $30,550,600 1,766 Industrial 14 $22,083,200 $33,124,800 $55,208,000 Multi -Residential 8 $6,408,500 $3,204,250 $9,612,750 Residential 579 $120,979,000 $60,489,500 $181,468,500 Total 700 $186,667,900 $134,015,750 $320,683,650 Agriculture 1 $1,200 $1,200 $2,400 Graf Commercial Exempt 2 $38,000 $38,000 $76,000 76 Industrial 1 $202,200 $303,300 $505,500 Residential 29 $4,565,800 $2,282,900 $6,848,700 Total 33 $4,807,200 $2,625,400 $7,432,600 Agriculture 1 $16,700 $16,700 $33,400 Commercial 25 $2,699,300 $2,699,300 $5,398,600 Holy Commercial Exempt 6 $1,342,600 $1,342,600 $2,685,200 Cross 356 Industrial 1 $132,000 $198,000 $330,000 Multi -Residential 2 $551,700 $275,850 $827,550 Residential 130 $21,968,300 $10,984,150 $32,952,450 Total 165 $26,710,600 $15,516,600 $42,227,200 Agriculture 1 $4,700 $4,700 $9,400 Commercial 15 $5,885,600 $5,885,600 $11,771,200 Luxemburg 245 Commercial Exempt 5 $1,237,800 $1,237,800 $2,475,600 Residential 109 $17,728,600 $8,864,300 $26,592,900 Total 130 $24,856,700 $15,992,400 $40,849,100 Agriculture 6 $322,000 $322,000 $644,000 Commercial 33 $3,676,900 $3,676,900 $7,353,800 New Vienna Commercial Exempt 14 $3,482,400 $3,482,400 $6,964,800 382 Industrial 1 $417,400 $626,100 $1,043,500 Residential 185 $29,593,300 $14,796,650 $44,389,950 Total 239 $37,492,000 $22,904,050 $60,396,050 Agriculture 2 $213,300 $213,300 $426,600 Commercial 45 $61,386,800 $61,386,800 $122,773,600 Peosta Commercial Exempt 18 $39,757,600 $39,757,600 $79,515,200 1,908 Industrial 18 $65,824,800 $98,737,200 $164,562,000 Multi -Residential 10 $18,808,900 $9,404,450 $28,213,350 Residential 681 $190,832,400 $95,416,200 $286,248,600 Total 774 $376,823,800 $304,915,550 $681,739,350 Agriculture 6 $243,700 $243,700 $487,400 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 52 Jurisdiction Property Class Parcel Counts Improved Value Content Value Total Value Commercial 7 $787,100 $787,100 $1,574,200 Rickardsville Commercial Exempt 5 $552,600 $552,600 $1,105,200 202 Residential 78 $15,646,300 $7,823,150 $23,469,450 Total 96 $17,229,700 $9,406,550 $26,636,250 Agriculture 2 $256,600 $256,600 $513,200 Commercial 14 $3,759,700 $3,759,700 $7,519,400 Sageville Commercial Exempt 2 $88,800 $88,800 $177,600 95 Industrial 1 $692,900 $1,039,350 $1,732,250 Multi -Residential 1 $102,900 $51,450 $154,350 Residential 31 $6,410,000 $3,205,000 $9,615,000 Total 51 $11,310,900 $8,400,900 $19,711,800 Commercial 8 $1,863,100 $1,863,100 $3,726,200 Sherrill Commercial Exempt 6 $337,500 $337,500 $675,000 189 Multi -Residential 2 $175,900 $87,950 $263,850 Residential 68 $10,736,800 $5,368,400 $16,105,200 Total 84 $13,113,300 $7,656,950 $20,770,250 Agriculture 3 $171,700 $171,700 $343,400 Commercial 29 $3,625,600 $3,625,600 $7,251,200 Worthington Commercial Exempt 12 $2,496,200 $2,496,200 $4,992,400 382 Industrial 1 $372,100 $558,150 $930,250 Multi -Residential 1 $102,200 $51,100 $153,300 Residential 157 $23,346,700 $11,673,350 $35,020,050 Total 203 $30,114,500 $18,576,100 $48,690,600 Agriculture 2 $370,700 $370,700 $741,400 Commercial 5 $294,300 $294,300 $588,600 Zwingle 84 Commercial Exempt 2 $16,300 $16,300 $32,600 Residential 35 $2,888,000 $1,444,000 $4,332,000 Total 44 $3,569,300 $2,125,300 $5,694,600 Agriculture 2,653 $426,373,700 $426,373,700 $852,747,400 Commercial 301 $88,499,400 $88,499,400 $176,998,800 Commercial Exempt 79 $60,057,400 $60,057,400 $120,114,800 Unincorporated Industrial 17 $15,804,800 $23,707,200 $39,512,000 18,733 Multi -Residential 20 $6,385,700 $3,192,850 $9,578,550 Residential 5,452 $1,532,832,600 $766,416,300 $2,299,248,900 Residential Exempt 3 $573,700 $286,850 $860,550 Total 8,525 $2,130,527,300 $1,368,533,700 $3,499,061,000 99,266 Grand Total 41,300 1 $10,065,561,200 $6,698,187,100 $16,763,748,300 Sources: Population Estimate, U.S. Census Bureau, 2020 American Community Survey (ACS) 5-year estimates. Note: Unincorporated Dubuque County population was estimated by subtracting populations of incorporated cities from the total Dubuque County population. Building/Improvement Count and Values, Dubuque County Assessor's Office. Contents Exposure derived by applying multiplier to Building Exposure based on HAZUS MH 2.2 standard contents multipliers by usage type as follows: Residential (50%), Commercial (100%), Industrial (150%), Agricultures (100%). Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 53 Table 3.8 provides the number of structures built by period. Note: There are minor differences between the structure counts from the parcel data and the structure counts in the census data due to the types of structures included in the counts. For example, many parcels zoned as agricultural use also have a residential structure (housing unit). Table 3.8. Year Structure Built Jurisdiction Total Housing Units Built 2020 or later Built 2010 to 2019 Built 2000 to 2009 Built 1990 to 1999 Built 1980 to 1989 Built 1970 to 1979 Built 1960 to 1969 Built 1950 to 1959 Built 1940 to 1949 Built 1939 or earlier Unincorporated County 7510 30 721 1678 1043 456 1079 764 452 244 1102 Asbury 2,056 6 416 872 272 75 309 86 20 0 0 Balltown 18 0 0 1 2 1 2 6 0 0 6 Bankston 1 0 0 0 0 0 0 0 1 0 0 Bernard 59 0 0 4 0 0 18 2 5 14 16 Cascade 849 0 60 136 86 51 144 86 44 51 191 Centralia 55 0 2 2 6 7 15 2 5 4 12 Dubuque 27,078 405 1,530 1,989 1,991 1,153 3,567 3,869 3,403 1,454 8,115 Durango 9 0 0 0 0 0 0 3 2 0 4 Dyersville 1,862 0 213 207 190 171 217 279 125 91 369 E worth 744 0 68 145 80 50 162 51 60 20 108 Farley 674 0 59 89 144 16 107 39 53 16 151 Graf 20 0 0 5 0 0 9 0 2 3 1 Holy Cross 142 0 0 15 8 16 21 22 22 2 36 Luxemburg 90 1 4 13 3 3 17 14 5 7 23 Peosta 830 0 223 260 257 29 28 10 0 11 12 Rickardsville 86 0 3 19 4 3 18 13 12 2 12 Sa eville 39 0 2 0 6 8 7 5 4 0 7 Sherrill 78 0 2 0 5 10 5 9 7 0 40 Worthington 157 0 0 7 13 7 29 19 13 5 64 Zwin le 49 0 1 9 7 0 1 9 7 1 15 Total 42,406 442 3,304 5,451 4,117 2,056 5,755 5,288 4,242 1,925 10,284 Source: U.S. Census Bureau 2020 ACS 5-Year Estimates; Unincorporated structure counts estimated by subtracting incorporated areas structure counts form the Total in the County. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 54 3.2.1.1 Public School Districts The 2023-2024 enrolled number of students at the participating public -school districts is provided in Table 3.9, as well as the number of buildings, building values (building exposure) and contents value (contents exposure). Table 3.9. Enrollment and Building Exposure by Jurisdiction -Public School Districts Enrollment Building Building Contents Total Public School District Count Exposure $ Exposure $ Exposure $ Dubuque 10,064 72 $424,261,073 $41,686,428 $465,947,501 Public School District Western Dubuque n/a n/a n/a n/a n/a Public School District Source: DGSD, 2023 3.2.2 Critical and Essential Facilities and Infrastructure As part of the update to the Dubuque County Multi -Jurisdictional Hazard Mitigation Plan, participating jurisdictions assessed the vulnerability of the following types of facilities below: • Critical Facilities: Those facilities that are essential in providing utility or direction either during the response to an emergency or during the recovery operation. • Essential Facilities: Those facilities that if damaged, would have devastating impacts on disaster response and/or recovery. • High Potential Loss Facilities: Those facilities that would have a high loss or impact on the community. • Transportation and Lifeline Facilities: Those facilities and infrastructure that are critical to transportation, communications, and necessary utilities. Table 3.10 is a summary of the inventory of critical and essential facilities and infrastructure in the planning area. This list was compiled from data layers provided by Dubuque County. The full list of critical facilities is included in Appendix E. This is a non-public appendix and is maintained by Dubuque County Emergency Management. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 55 Table 3.10. Inventory of Critical/Essential Facilities and Infrastructure by Jurisdiction Type of Facility Q 3 m COc) `� c) 0 — 0 w m LL C9 o o 2 = _j m Z 0 a- > � W � cn _ s (n ° ° 3= N a� a o 0 t) 0 t— Enter the Number Physically Located in Each Jurisdiction Airport Runway / Airfield 1 _7712 3 Ambulance Service 1 1 1 2 1 1 1 1 1 1 9 American Red Cross HQ 1 1 Cell Towers 17 3 1 1 1 3 1 1 30 58 College / University 5 1 1 7 Community / Recreation Center 1 1 1 1 1 1 2 4 12 Convention Center 2 1 1 4 ,County Government Facility 21 1 1 1 1 4 7 Court House I 1 1 1 Education Facility 3 1 27 3 3 1 1 1 3 1 1 42 Emergency Response Facility 1 1 1 1 4 Fire Station/EMS Station 1 1 2 1 6 1 1 1 1 1 1 1 1 1 2 21 Government or Military Facility 1 1 1 1 1 5 Health or Medical Facility 2 19 2 1 24 Hospital/Medical Center 2 1 3 Information or Communication Facility 1 1 Law Enforcement 1 1 2 1 1 1 1 1 9 Municipal Government Facility 1 1 1 10 1 2 14 1 1 1 1 1 1 2 37 Nursing Home / Long Term Care 2 2 20 1 25 Outdoor Theater / Amphitheater 1 2 1 4 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 56 a� ° o Type of Facility 3 `� — o °' _ 0 Q' d s o 0 m M m >, a M ao� 3= 0 Q m CO U U 0 0 w u- U 2 _j Z a- W to to IN U t— Outpatient Clinic 2 20 2 1 25 School 3 21 3 2 1 5 35 School: Elementary 2 13 2 1 2 1 2 23 School: High School 1 4 1 1 7 School: Middle School 2 4 1 1 8 Storm shelters 2 1 1 1 1 6 Sirens 5 1 3 1 17 6 3 3 2 1 2 3 1 1 2 0 51 State Government Facility 5 1 1 7 Tier II Facility 481 1 1 1 1 1 1 1 1 1 1 12 61 Transportation Facility 2 1 3 Veterinary Hospital/Clinic 1 1 5 2 1 1 11 Wastewater Treatment Plant 1 1 1 1 1 1 1 1 1 1 1 1 1 13 Source: Dubuque County Hazard Mitigation Planning Committee Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 57 Other Assets Assessing the vulnerability of the planning area to disaster also involves inventorying the natural, historic, cultural, and economic assets of the area. This is important for the following reasons: • The plan participants may decide that these types of resources warrant a greater degree of protection due to their unique and irreplaceable nature and contribution to the overall economy. • If these resources are impacted by a disaster, knowing about them ahead of time allows for more prudent care in the immediate aftermath, when the potential for additional impacts is higher. • The rules for reconstruction, restoration, rehabilitation and/or replacement are often different for these types of designated resources. • Natural resources can have beneficial functions that reduce the impacts of natural hazards, such as wetlands and riparian habitat, which help absorb and attenuate floodwaters. • Losses to economic assets (e.g., major employers or primary economic sectors) could have severe impacts on a community and its ability to recover from disaster. In the planning area, specific assets include the following: Threatened and Endangered Species: Table 3.11 includes Federally Threatened, Endangered, Proposed and Candidate Species in Dubuque County, Iowa. Table 3.11. Threatened and Endangered Species in Dubuque County Common Name Scientific Name Status Northern long-eared bat Myotis septentrionalis Endangered Eastern prairie fringed orchid Platanthera leucophaea Threatened Northern wild monkshood Aconitum novaboracense Threatened Sheepnose Mussel Plethobasus cyphyus Endangered Higgins eye (pearlymussel) Lampsilis higginsii Endangered Iowa Pleistocene snail Discus macclintocki Endangered Rusty patched bumble bee Bombus affinis Endangered Source: U.S. Fish and Wildlife Service. Natural Resources: The Dubuque County Conservation Board manages parks and nature preserve areas in Dubuque County. There are seven county parks, six preserves and one state park in the County. The County also operates one golf course and maintains 26 miles of a hike and bike trail called Heritage Trail that was part of an old, abandoned railroad right of way. • Bankston Park • Fillmore Recreation Area • Finley's Landing Park • Massey Marina Park • Mud Lake Park • New Wine Park Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 58 • Swiss Valley Park • Swiss Valley Nature Preserve • Interstate Power Forest Preserve • Little Maquoketa River Mounds Preserve • Pohlman Prairie Preserve • Ringneck Ridge Wildlife Area • Whitewater Canyon Wildlife Area Historic Resources: The National Register of Historic Places is the official list of the Nation's cultural resources worthy of preservation. Authorized under the National Historic Preservation Act of 1966, the National Register is part of a national program to coordinate and support public and private efforts to identify, evaluate, and protect our historic and archeological resources. The National Register is administered by the National Park Service under the Secretary of the Interior. Properties listed in the National Register include districts, sites, buildings, structures, and objects that are significant in American history, architecture, archeology, engineering, and culture. There are 49 buildings on the National Register of Historic Places, 28 districts, one object, four sites and six structures in Dubuque County that are listed on the National Register of Historic Places (see Table 3.12) Table 3.12. Properties/Landmarks on the National Register of Historic Places, Dubuque County City Resource Address Type Cascade Sauser-Lane House 101 2nd Ave., SW BUILDING Dubuque Andrew -Ryan House 1375 Locust BUILDING Dubuque Bell, John, Block 1307-07 Central Ave. BUILDING Dubuque Bishop's Block 90 W. Main St. BUILDING Dubuque Carnegie -Stout Public Library 11th and Bluff Sts. BUILDING Dubuque Diamond Jo Boat Store and Office Jones and Water Sts. BUILDING Dubuque Dubuque Casket Company 1798 Washington St. BUILDING Dubuque Dubuque City Hall 50 W. 13th St. BUILDING Dubuque Dubuque County Courthouse 720 Central Ave. BUILDING Dubuque Dubuque County Jail 36 E. 8th St. BUILDING Dubuque Dubuque Freight House E. 3rd St. Extension BUILDING Dubuque Dubuque Star Brewery 500 E. Fifth St. BUILDING Dubuque Dubuque YMCA Building 125 W 9th St. BUILDING Dubuque Garland House 1090 Langworthy Ave. BUILDING Dubuque German Bank 342 Main St. BUILDING Dubuque Grand Opera House 135 8th St. BUILDING Dubuque Ham, Mathias, House 2241 Lincoln Ave. BUILDING Dubuque Hancock, Charles T., House 1105 Grove Terr. BUILDING Dubuque Holland, Ora, House 1296 Mt. Pleasant St. BUILDING Dubuque Hollenfelz House 1651 White St. BUILDING Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 59 City Resource Address Type Dubuque Interstate Power Company Building 1000 Main; 131 W. 10th St. BUILDING Dubuque Kelley House 274 Southern Ave. BUILDING Dubuque Langworthy House 1095 W. 3rd St. BUILDING Dubuque Loetscher, T. Ben, House 160 S. Grandview Ave. BUILDING Dubuque McMahon House 800 English Lane BUILDING Dubuque Metz Manufacturing Company 1690 Elm St. BUILDING Dubuque Mount Saint Bernard Seminary and Barn 10336 Military Rd. BUILDING Dubuque Old Chapel Hall 2050 University Ave. BUILDING Dubuque Orpheum Theatre and Site 405 Main St. BUILDING Dubuque Rath, Johann Christian Frederick, House 1204 Mt. Loretta Ave. BUILDING Dubuque Redstone 504 Bluff St. BUILDING Dubuque Roshek Brothers Department Store 250 W. 8th St. BUILDING Dubuque Round Barn, Dubuque Township 2810 Cascade Rd. BUILDING Dubuque Sacred Heart School 2238 Queen St BUILDING Dubuque Schroeder -Klein Grocery Company Warehouse 40-48 Main St BUILDING Dubuque Security Building 800 Main St. BUILDING Dubuque St. Luke's Methodist Episcopal Church 1199 Main St. BUILDING Dubuque Thedinga, J. H., House 340 W. 5th St. BUILDING Dubuque Town Clock Building 823-25 Main St. BUILDING Dubuque Ziepprecht Block 1347-53 Central Ave. BUILDING Dyersville Allen House 515 1st Ave., W. BUILDING Dyersville Basilica of St. Francis Xavier, Church and Rectory 114 2nd St. SW BUILDING Dyersville Memorial Building 340 1st Ave., E. BUILDING Epworth Epworth School 310 W. Main St. BUILDING Epworth Kidder, Zephaniah, House 206 1st Ave NE BUILDING Farley Lincoln School About 4 mi. N of Farley BUILDING Holy Cross Western Hotel SE of Holy Cross on U.S. 52 BUILDING Sherrill Haberkorn House and Farmstead W of Sherrill BUILDING Sherrill Sherrill Mount House 5259 S. Mound Rd. BUILDING Dubuque Cathedral Historic District Roughly bounded by a bluff line running W. of Bluff St., W. 7th, Locust and Jones Sts. DISTRICT Dubuque Cathedral Historic District (Boundary Increase) Roughly bounded by 7th, Locust, 4th, Bissel, Jones, Bluff, Emmett & St. Mary's Sts. DISTRICT Dubuque Dubuque Millwork Historic District White, Jackson, Elm between E. 6th and E. 11th Sts. DISTRICT Dubuque Dubuque Trading Post -Village of Kettle Chief Archeological District Address Restricted DISTRICT Dubuque Eagle Point Park Historic District 2601 Shiras Ave. DISTRICT Dubuque Fenelon Place Residential Historic District Hill St., 3 & 5th Sts., W., Fenelon PI., Fenelon Place Elevator DISTRICT Dubuque Four Mounds Estate Historic District 4900 Peru Rd. DISTRICT Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 60 City Resource Address Type Dubuque Holy Ghost Catholic Historic 2887-2921 Central Ave. DISTRICT District Dubuque Jackson Park Historic District Roughly bounded by Seventeenth, Iowa, Tenth and Ninth, DISTRICT and Bluff and Montrose Sts. Dubuque Langworthy Historic District Langworthy, West Third, Melrose Terrace, vet. Hill and W. DISTRICT 5th, Alpine and Walnut bet. Solon and W. Fifth Dubuque Lock and Dam No. 11 Historic 11 Lime St. DISTRICT District Dubuque Loras College Historic District Roughly bounded by Alta Vista St., Loras Blvd., Kirkwood DISTRICT St., Cox St., West 17th St., and Henion St. Dubuque Mines of Spain Area Rural Address Restricted DISTRICT Community Archeological District Dubuque Mines of Spain Lead Mining Address Restricted DISTRICT Community Archeological District Dubuque Mines of Spain Prehistoric Address Restricted DISTRICT District Dubuque Old Main Historic District Main St. between list and 4th Sts. DISTRICT Dubuque Old Main Street Historic District Main St. between W. 1st & 4th Sts. DISTRICT (Boundary Increase and Additional Documentation Dubuque Schrup, John and Marie (Palen) 10086 Lake Eleanor Rd. DISTRICT Farmstead Historic District Dubuque Seminary Hill Residential Historic Clarke Dr., N. Main & Madison Sts., Madison Park DISTRICT District Dubuque St. Mary's Catholic Church 105 E. 15th, 1584 White, 1501 & 1561 Jackson Sts. DISTRICT Historic District Dubuque Upper Central Avenue 1460-1965 Central Ave. DISTRICT Commercial Historic District Dubuque Upper Iowa Street Historic Iowa St. between W. 11th & 12th Sts. DISTRICT District Dubuque Upper Main Street Historic 1 000's-1 1 00's Main St. DISTRICT District Dubuque Upper Main Street Historic 909, 951, 955, 965 Main St. DISTRICT District(Boundary Increase Dubuque Washington Residential Historic 1100 - 1900 bilks. White, Jackson & Washington Sts. DISTRICT District Dubuque Washington Street and East 2162-2255 Washington St and E 22nd St DISTRICT 22nd Street Historic District Dubuque West Eleventh Street Historic Bounded by Grove Terrace, Loras Blvd., Wilbur and Walnut DISTRICT District Sts. New St. Boniface of New Vienna 7401 Columbus St. DISTRICT Vienna Historic District Dubuque Dubuque, Julien, Monument Confluence of Mississippi River and Catfish Creek in Mines OBJECT of Spain State Recreation Area Dubuque Four Mounds Site Address Restricted SITE Dubuque Washington Park Bounded by 6th, 7th, Bluff, and Locust Sts. SITE Durango Concord Congregational 21755 US 52 N. SITE Cemetery Durango Cottage Hill Methodist -Episcopal 22001 US 52 N. SITE Cemetery Bernard Washington Mill Bridge Creek Branch Ln. over Lytle Cr. STRUCTURE Dubuque Dunleith and Dubuque Bridge 7600 Chavenelle Dr. STRUCTURE Dubuque Fenelon Place Elevator 512 Fenelon Pl. STRUCTURE Dubuque Julien Dubuque Bridge US 20 over Mississippi R. STRUCTURE Dubuque Rogers, George W. Company Commercial St. and River Front STRUCTURE Shot Tower Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 61 City Resource Address Type Dubuque WILLIAM M. BLACK (dredge) E. 2nd St. STRUCTURE Source: National Park Service. Agriculture and the Economy: Agriculture plays an important role in the Dubuque County economy (see Table 3.13). Table 3.13. Agricultural Statistics for Dubuque County 2022 Census of Agriculture Total Land in Farms (acres) 313,476 Number of Farms 1,402 Average Farm Size (acres) 224 Average Age of Farmers (years) 53.9 Market Value of All Farm Products ($) 440,085,000 Market Value of All Crops ($) 128,304,000 Market Value of All Livestock ($) 311,781,000 Production Expenses ($) 350,245,000 Hogs & Pigs Inventory (head) 140,922,000 Cattle as of January 1, 2022 All Cattle and Calves (State Rank 3) 130,000 Crops-2021 Acreage, Yield, and Production Rank Corn for Grain (State Rank 35) 146, 500 acres Soybeans (State Rank 68) 42,400 acres Oats (State Rank 3) 6,200 acres Source: Iowa Agricultural Statistics Bulletin, USDA, National Agricultural Statistics Service. 3.3 Development Since 2019 Plan Update This section provides information on development that have occurred since the 2019 Dubuque County Multi -Jurisdictional Hazard Mitigation Plan Update. According to the U.S. Census Bureau, the Dubuque County population increased 11.36% percent from 2010 to 2020 overall. During this time -period, some jurisdictions within the county saw a decrease in population including Bankston, Durango, Luxemburg, New Vienna, Sageville, and Zwingle. Table 3.14 provides the population change statistics for all cities in Dubuque County as well as the county. The unincorporated areas population was determined by subtracting the populations of the incorporated areas from the overall county population. Table 3.14. Dubuque County Population Change, 2000 - 2020 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 62 Jurisdiction 2000 Population 2010 Population 2020 Population # Change 2000-2020 % Change 2000-2020 Asbury 2,450 4,170 5,943 3,493 142.57% Balltown 73 68 79 6 8.22% Bankston 27 25 23 -4 -14.81 % Bernard 97 112 114 17 17.53% Cascade 1,958 2,159 2,386 428 21.86% Centralia 101 134 116 15 14.85% Dubuque 57,686 57,637 59,667 1,981 3.43% Durango 24 22 10 -14 -58.33% Dyersville 4,035 4,058 4,477 442 10.95% Epworth 1,428 1,860 2,023 595 41.67% Farley 1,334 1,537 1,766 432 32.38% Graf 73 79 76 3 4.11 % Holy Cross 339 374 356 17 5.01 % Luxemburg 246 240 245 -1 -0.41% New Vienna 400 407 382 -18 -4.50% Peosta 651 1,377 1,908 1,257 193.09% Rickardsville 191 182 202 11 5.76% Sageville 203 122 95 -108 -53.20% Sherrill 186 177 189 3 1.61 % Worthington 381 401 382 1 0.26% Zwingle 100 91 84 -16 -16.00% Dubuque County 89,143 93,653 99,266 10,1231 11.36% Iowa 1 2,926,3241 3,046,355 3,190,3691 264,0451 9.02% Source: U.S. Census Bureau 2020 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 63 Table 3.15 provides the change in numbers of housing units in the planning area from 2010 to 2020. Table 3.15. Change in Housing Units, 2010-2020 Jurisdiction 2010 Housing Units 2020 Housing Units # Change 2010-2020 % Change 2010-2020 Unincorporated County 6935 7233 298 4.3% Asbury 1463 2128 665 45.5% Balltown 33 33 0 0.0% Bankston 9 10 1 11.1% Bernard 56 56 0 0.0% Cascade 974 1050 76 7.8% Centralia 54 50 -4 -7.4% Dubuque 25029 27174 2145 8.6% Durango 10 11 1 10.0% Dyersville 1808 1956 148 8.2% Epworth 651 717 66 10.1% Farley 586 678 92 15.7% Graf 30 28 -2 -6.7% Holy Cross 158 159 1 0.6% Luxemburg 103 104 1 1.0% New Vienna 180 178 -2 -1.1% Peosta 456 656 200 43.9% Rickardsville 74 80 6 8.1% Sageville 57 44 -13 -22.8% Sherrill 74 78 4 5.4% Worthington 162 165 3 1.9% Zwingle 49 42 -7 -14.3% Total 38951 42630 36791 9.4% Source: U.S. Census Bureau 2020. 3.4 Future Land Use and Development The following sections provide details regarding future growth, land use and development. The information in this section comes from the Dubuque County 2019 Multi -Jurisdictional Hazard Mitigation Plan, information provided by each of the participating jurisdictions as well as other sources, cited throughout. Where available, maps are provided to facilitate consideration of hazard areas in future development plans as well as potential growth areas. Dubuque County The unincorporated areas of Dubuque County are primarily agriculturally based. The topography varies through the County and associated land capabilities drive the type of farm - based enterprises that operate in each location. Numerous major U.S. and state highways run through Dubuque County. Dubuque County has 17 townships and 21 incorporated cities, the most cities of any other county in Iowa and is ranked the 7th most populated county in Iowa. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 64 There are 3 four -lane highways that provide access into the county: US Highway 20, US Highway 151, and US Highway 61. Additionally, there are two main two-lane highways that provide access into and around the county: US Highway 52 and Iowa Highway 136 which is on the west end of the county. These five highways provide access to three-quarters of the cities in the County. The County's primary land use is agricultural and is found throughout the unincorporated areas of the county. Residential development in the county's unincorporated areas generally continues to occur according to previously established development patterns and is following the Future Land Use Development Map. Residential uses are primarily located near incorporated cities, along major highways and roadway corridors and are found in clusters up and down the Mississippi River. Most of the new residential growth continues to occur within 2- 4 miles of the City of Dubuque and near the larger cities in the county such as Cascade, Dyersville, Epworth, Farley, and Peosta. Commercial development is located mostly along the highway corridors with most of the commercial uses found along US Highways 61 and 151 south from the City of Dubuque to the Airport, along US Highway 20 from the Dubuque City limits to Peosta, and along US Highway 52 from the City of Dubuque to Mud Lake Road. Some new commercial development is occurring in the flood plain along the Couler Valley and Little Maquoketa River north of the City of Dubuque. Property owners are filling in the old barrow pits along Iowa Highway 3 (formerly US Highway 52) that are in the flood plain and then marketing the property for new commercial and industrial uses. Dubuque County is looking into amending the Flood Plain Management Ordinance to restrict the filling in of flood plain and to reduce the occurrence of flooding in that area and in the County, as a whole. Industrial uses in Dubuque County are primarily located in three areas around the City of Dubuque. The first area is to the south along Highways 52, 61, and 151. An industrial area is located west of the city of Dubuque along US Highway 20. This area is mostly developed from the Dubuque city limits to Peosta. The third area is along Highway 3 North in the Couler Valley and Little Maquoketa River outlet to the Mississippi River. John Deere Dubuque is located just outside the flood plain of the Little Maquoketa River. Over the last few years, Flood Plain Permits have been issued for filling in the flood plain along Highway 3 North. Some older more established businesses are seeing flooding in the Couler Valley watershed that have not flooded before. New development will occur along this corridor until the Flood Plain Management Ordinance is amended to restrict filling in and development of the flood plain in this area. Both the South and West commercial and industrial corridors will be affected by the proposed four -lane highway, the Southwest Arterial that will be built in the next 5-10 years between US Highways 61/151 and US Highway 20. Residential, commercial, and industrial development is expected to occur from the city limits on the southwest side of the City of Dubuque along the Southwest Arterial corridor. Dubuque County's Comprehensive Land Use Development Plan and Map is the community's guide to future development of the unincorporated areas of Dubuque County. The development plan and map guide development decisions made by the Board of Supervisors. The Comprehensive Land Use Development Plan is not an ordinance. It contains the long-range goals and objectives for the County that were compiled after several public meetings and Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 65 hearings to determine a community vision for the future of Dubuque County. The first Comprehensive Plan for the County was adopted on January 21, 1969, and was updated in 2011-2012 to incorporate the 10 Smart Planning Principles and 13 Comprehensive Planning Elements adopted by the State of Iowa. Population projects can be found in Table 3.16 and future land use development can be found in Table 3.17. Table 3.16 Dubuque County 2010, 2020 Population, Population Projections 2025-2040 2020 2025 2030 2035 2040 2010 Population Population Population Population Population Population Projection Projection Projection Projection 93,653 99,266 98,407 100,248 102,107 103,994 Source: 2010 and 2020 Population from the U.S. Census Bureau 2010 Decennial Census; Population Projections from the "2010 State Profile: Iowa", Woods & Poole Economics, Inc. Prepared by State Data Center Program. Table 3.17. Future Land Use & Development Jurisdiction 2019 Plan 2024 Plan There are no expected or planned growth There is no expected growth to occur in known areas in the city. However, the city is planning hazard areas. The city will continue with various for the construction of the Clair Creek well and capital improvement projects including a a new water tower at Asbury Park. No roundabout at the intersection of Asbury Road and development is expected to occur in a 100- Hales Mill Road; various street improvement Asbury year floodplain or other known hazard areas. projects; expansion and improvement of city trails. Balltown None None reported Bankston None None Bernard None None New Parkridge Phase 3 subdivision, approximately 25-30 new single fam lots. Four new homes in Parkview subdivision. New park on the SE Corner of the Oak Hill subdivision. New library at 110 S 2nd Ave SW. New dog park at the base of the water tower. Additional single-family lots being platted in Cascade None reported. Oak Hill, not sure number but likely 40. Centralia None None With the opening of the Southwest Arterial, the city expects future growth along the corridor. The city is encouraging development of housing and has over 2000 units in the process of being reviewed/approved and/or constructed throughout the community. These housing units include both affordable and market rate and are composed of residential subdivisions, multi -family apartments and mixed -use development. Additional industrial park development is anticipated with the continued infilling of the Dubuque Industrial Center West, Dubuque Industrial Center South, Kerper Industrial Center and Dubuque Industrial Center Crossroads. Dubuque None reported. Additional development/redevelopment of the Port Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 66 Table 3.17. Future Land Use & Development Jurisdiction 2019 Plan 2024 Plan of Dubuque and Chaplain Schmitt Island is planned. Development continues in the Historic Millwork District with ongoing adaptive reuse of warehouse buildings. The Upper Central Avenue Corridor from 22nd Street to 10th Street is part of a masterplan and buildings will be rehabilitated for mixed -use and streetscape improvements will be made. The city received a RAISE Grant and will involve reconstruction of 16th Street, installation of roundabouts and construction of a 14th Street overpass over Elm Street. As part of an East-West Corridor Study, the city is in the process of designing the reconstruction of University Avenue from Pennsylvania Avenue to Delhi Street. This reconstruction will include the installation of roundabouts at key intersections. Durango None reported. None reported. There are no expected growth areas in the city, and development is not expected to The city plans to proceed with the development of occur in any known hazard areas. The city Field of Dreams and the expansion of the expects construction on the following Industrial Park. However, the city officials are projects: Expand Trail System and ensuring no development will occur in any known playground equipment at Westside Park; hazardous areas. The city is conducting a study install sewer pump station at southeast on its watershed and will apply for federal grants section of the city; install roundabout at 1 st to fund capital investment. The city is also looking avenue west and X49; rehab various street to obtain federal and state grants to build three Dyersville projects citywide. bridges and enhance its transportation network. New development of 115 acres of land is expected to occur south of Highway 20. Additionally, the city expects to begin Residential and commercial growth is occurring construction on water and sewer main south of Hwy 20. The development is not in any Epworth extensions within the next five years. known hazard areas. Growth in Farley is expected to occur in the areas highlighted in green in the map shown below. These are not known hazard areas. Additionally, the city is expected to begin construction on two radium removal facilities and a lift station. Street construction on 9th Ave NW and 11 Ave NW may also occur. Farley (MAP indicates all 3 east of highway 20. None reported. Graf None reported. None Holy Cross None None The city plans to develop the rest of the residential Luxemburg None lots in the city subdivision. The city is planning for the development of a new industrial park within the next five years. This project will not occur within the 100-year floodplain or any other known hazard area. New Vienna Additionally, the city expects construction to None Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 67 Table 3.17. Future Land Use & Development Jurisdiction 2019 Plan 2024 Plan begin on a new fire station on North Columbus Street. There are expected growth areas in the city, and development is not expected to occur in any known hazard areas. The city expects construction on the following projects: Remodel of PCC and City Hall; Kelly Oaks Park/Trail System and playground equipment Trail extension from Kelly Oaks Park to Ulyana; New Water tower South of Highway 20; Peosta St and Burds Rd turn lane project; Peosta various street projects citywide. None reported. Rickardsville None None Sageville None None Sherrill None None The city is working on development of 8.65 acres at the end of 4th Ave NW for residential housing subdivision. This development is not located in the Worthington None reported. any known hazard area. Zwingle None The Dubuque Senior High School project is taking place and will be completed at the end of 2024. We have put a bond out for vote in November 2023. The primary focus is to build a new middle school on the Washington Middle School site, to air condition the remaining elementaries that are The local option tax has been renewed; not currently air conditioned, add a gym addition therefore, the school district expects that to Eisenhower Elementary School, construction of Senior High School will likely see another $30 a baseball and softball facility, and purchase DCSD million renovation project starting 2020. property for a future elementary school. WDCSD None reported. None reported. NICC None reported. None Unincorporated Residential property. New interchanges on County None reported. Highway 20. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 68 3.5 Hazard Profiles and Vulnerability Hazard Profiles Requirement §201.6(c)(2)(i): [The risk assessment shall include a] description of the ... location and extent of all natural hazards that can affect the jurisdiction. The plan shall include information on previous occurrences of hazard events and on the probability of future hazard events. Each hazard identified in Section 3.1.4 is profiled individually in this section in alphabetical order. The level of information presented in the profiles varies by hazard based on the information available. With each update of this plan, new information will be incorporated to provide for better evaluation and prioritization of the hazards that affect the planning area. Detailed profiles for each of the identified hazards include information categorized as follows: Hazard Description This section consists of a general description of the hazard and the types of impacts it may have on a community. It also includes the ratings assigned to the hazard relative to typical warning times and duration of hazard events as described in Table 3.5.1. Geographic Location/Extent This section describes the geographic location of the hazard in the planning area. Where available, maps are utilized to indicate the specific locations of the planning area that are vulnerable to the subject hazard. This section also provides information as to the extent of the hazard (i.e., the size or degree of impact). Previous Occurrences This section includes information on historic incidents and their impacts. Probability of Future Occurrence The frequency of past events is used to gauge the likelihood of future occurrences. Where possible, the probability or chance of occurrence was calculated based on historical data. Probability was determined by dividing the number of events observed by the number of years and multiplying by 100. This gives the percentage chance of the event happening in any given year. An example would be three droughts occurring over a 30-year period, which suggests a 10 percent chance of a drought occurring in any given year. For each hazard, the probability is assigned a rating as defined in Table 3.5.1. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 69 Vulnerability Assessments Requirement §201.6(c)(2)(ii): [The risk assessment shall include a] description of the jurisdiction's vulnerability to the hazards described in paragraph (c)(2)(i) of this section. This description shall include an overall summary of each hazard and its impact on the community. Requirement §201.6(c)(2)(ii)(A): The plan should describe vulnerability in terms of the types and numbers of existing and future buildings, infrastructure, and critical facilities located in the identified hazard areas. Requirement §201.6(c)(2)(ii)(B): [The plan should describe vulnerability in terms of an] estimate of the potential dollar losses to vulnerable structures identified in paragraph (c)(2)(i)(A) of this section and a description of the methodology used to prepare the estimate. Requirement §201.6(c)(2)(ii)(C): [The plan should describe vulnerability in terms of] providing a general description of land uses and development trends within the community so that mitigation options can be considered in future land use decisions. Requirement §201.6(c)(2)(ii): (As of October 1, 2008) [The risk assessment] must also address National Flood Insurance Program (NFIP) insured structures that have been repetitively damaged in floods. Following the hazard profile for each hazard is the vulnerability assessment. The vulnerability assessment further defines and quantifies populations, buildings, critical facilities, and other community assets at risk to natural hazards. The vulnerability assessments were conducted based on the best available data and the significance of the hazard. Data to support the vulnerability assessments was collected from the following sources: • Available GIS data sets such as DFIRM, parcel data, critical facilities, etc. (all sourced when used). • Homeland Security Infrastructure Program Freedom, 2015. • Written descriptions of assets and risks provided by participating jurisdictions. • Existing plans and reports. • Personal interviews with planning committee members and other stakeholders; and • Other sources as cited. Detailed profiles for each of the identified hazards include information categorized as follows: Vulnerability Overview This section consists of a general overview narrative of the planning area's vulnerability to the hazard. Within this section, the magnitude/severity of the hazard is discussed. The magnitude of the impact of a hazard event (past and perceived) is related directly to the vulnerability of the people, property, and the environment it affects. This is a function of when the event occurs, the Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 70 location affected, the resilience of the community and the effectiveness of the emergency response and disaster recovery efforts. For each hazard, the magnitude/severity is assigned a rating as defined in Table 3.5.1. Potential Losses to Existing Development This section provides the potential losses to existing development. Where data is available, this section provides estimated financial losses as well as the methodology used. For hazards with an overall "Low" rating, potential losses may not be discussed. Future Development This section provides information on how vulnerability to this hazard will be impacted by planned future development, as well as information for jurisdictions to consider in planning future development. Climate Change Impacts This section will discuss any potential impacts to this hazard because of climate change. Hazard Summary by Jurisdiction For hazards that vary by jurisdiction, this section will provide an overview of how the hazard varies, followed by a table indicating the probability, magnitude, warning time and duration rankings for each jurisdiction with the resulting hazard score and level. 3.5.1 Animal/Plant/Crop Disease Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 1 1 1 4 1.30 Low Profile Hazard Description Agricultural infestation is the naturally occurring infection of vegetation, crops or livestock with insects, vermin, or diseases that render the crops or livestock unfit for consumption or use. Because of Iowa's overall substantial agricultural industry and related facilities and locations, the potential for infestation of crops or livestock poses a significant risk to the economy of the State. Iowa cropland is vulnerable to disease and other agricultural pests. Some levels of agricultural infestation are normal in Iowa. The concern is when the level of an infestation escalates suddenly, or a new infestation appears, overwhelming normal control efforts. The levels and types of agricultural infestation appear to vary by many factors, including cycles of heavy rains and drought. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 71 Animal Disease Agricultural incidents are naturally occurring infection of livestock with insects, vermin, or diseases that render the livestock unfit for consumption or use. The livestock inventory for the state of Iowa includes nearly 4 million cattle and calves, while Dubuque County had nearly 132,000 head of cattle and calves and nearly 141,000 head of hogs and pigs. With this substantial agricultural industry and related facilities throughout the State, the potential for infestation of livestock poses some risk to the economy. The Iowa Department of Agriculture and Land Stewardship (IDALS) monitors and reports on animal reportable diseases in Iowa. Producers are required by state law to report any of the reportable animal diseases to the IDALS's Bureau of Animal Industry. The IDALS's Bureau of The Center for Agriculture Security is the lead coordinating bureau for any emergency response for an agriculture incident. Disease outbreaks can also occur in wild animal populations. The IDALS's Bureau of Animal Industry also monitors wild animal species and game throughout the state as well as diseases that may impact them. CroD Pests/Diseases A plant disease outbreak or a pest infestation could negatively impact crop production and agriculturally dependent businesses. An extreme outbreak or infestation could potentially result in billions of dollars in production losses across the U.S. The cascading net negative economic effects could result in widespread business failures, reduction of tax revenues, harm to other state economies, and diminished capability for this country to compete in the global market. Many factors influence disease development in plants, including hybrid/variety genetics, plant growth stage at the time of infection, weather (e.g., temperature, rain, wind, hail, etc.), single versus mixed infections, and genetics of the pathogen populations. The two elements of coordination and communication are essential when plant diseases or pest infestations occur. The United States Department of Agriculture/ Animal Plant Health Inspection Service, Iowa Department of Agriculture and Land Stewardship, local producers, local government, assessment teams and state government entities must work together to effectively diagnose the various plant hazards to determine if immediate crop quarantine and destruction is required. Iowa State University, College of Agriculture and Life Sciences has The Plant and Insect Diagnosis that provides diagnosis of plant problems (plant diseases, insect damage, and assessment of herbicide damage) and the identification of insects and weeds from the field, garden, and home. Specific plant pests can vary from year to year. Table 3.18 provides a summary of the value of agricultural products sold in the planning area. Agricultural infestation of crops or livestock in the planning area would severely affect the economy. Table 3.18. Market Value of Agricultural Products Sold, 2012 - Dubuque County, IA Market Value of Products Sold $440,085,000 Market Value of Crops $128,304,000 (29.15%) Market Value of Livestock $311,781,000 (70.85%) Average Per Farm $313,898 Source: USDA National Agricultural Statistics Service, 2017 Census of Agriculture. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 72 Animal Location/Extent In addition to the animal farm operations, there are also confined and open feeding operations in Dubuque County. According to data from the Iowa NRGIS Repository, there are 56 Animal Feeding Operations listed in the Iowa Department of Natural Resources Animal Feeding Operations Database. This includes 29 Confined Animal Feeding Operations and 24 Open Feedlots, and three combination Confined/Open feedlots. There are also ten registered Captive Cervid Herd in Dubuque County (8 Deer and 2 Elk). CroD Location/Extent According to the National Agricultural Statistics Service, in 2017 Dubuque County's top crop items included the following: • Corn for Grain (State Rank 65)-152,316 acres harvested • Soybeans (State Rank 94)-36,196 acres harvested • Oats (State Rank 2)-1,432 acres harvested Figure 3.1. Dubuque County Cropland Data Layer USDA CDL2022 CDL, Dubuque County, Iowa Lane Carr Calego mro�cre+uw aeeave� r, .- ■creoxru� ''��Y'�'i �"'-.�.', ` ��� tiffs.; '��• . . ®•-- J •` �� f yRDC r O H.n ' °fie � ��% � '1 '� HCNRGRµg1LMl1RE" � •_�; -• rr ■y�'�'•" Source: USDA, produced by CropScape. According to the Iowa Department of Agriculture and Land Stewardship, Pesticide Bureau. The red icons indicate beehives, and the purple icons indicate grapes. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 73 Figure 3.2. Sensitive Crops Registered Sites, Dubuque County, IA Source: Iowa Specialty Crop Site Registry. Previous Occurrences In the beginning of April 2015, there were a significant number of confirmed diagnoses of avian influenza in the State of Iowa. As a result, on Friday May 1, 2015, Governor Branstad declared a state of emergency. Confirmed cases occurred in the following counties: Buena Vista, Calhoun, Cherokee, Clay, Hamilton, Kossuth, Lyon, Madison, O'Brien, Osceola, Palo Alto, Plymouth, Pocahontas, Sac, Sioux, Webster, and Wright. Infected flocks were depopulated and composted and clean up and disinfection occurred. There were 77 total premises and 34 million birds affected. This included 35 commercial turkey flocks, 22 commercial egg production flocks, 13 pullet flocks, 1 breeding flock for a mail order hatchery, and 6 backyard flocks. More than 2,300 USDA staff and contractors were dispatched to Iowa to assist with the response to the avian influenza situation, including a USDA Incident Management Team (IMT). More than 300 state employees also participated in the disaster response. As recently as November 27, 2023, another massive flock of egg -laying hens in Iowa was recently found to be infected by a very transmissible and deadly version of avian flu, which has pushed the total number of affected birds this fall beyond last year's deaths for the same period. There have been no reported infected flocks in Dubuque County. Bovine Spongiform Encephalopathy (BSE) (A.K.A. Mad Cow Disease) To date, BSE has been confirmed in Great Britain, Belgium, France, Germany, Spain, Switzerland, Japan, Canada, and the United States. In the United States, the first positive BSE cow was discovered in Washington. As a result of a surveillance program from June 2004 to March 2006, two additional positive domestic cows were found; one each in Texas and Alabama. Since 1997 FDA implemented a feed ban prohibiting the feeding of feedstuff derived from ruminants to other ruminants. The results of this ban and enhanced surveillance indicate that while BSE is present, it is at an extremely low level in U.S. cattle. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 74 Chronic Wasting Disease Chronic wasting disease, or CWD, is a neurological disease infecting wild white-tailed deer in Iowa and other members of the Cervidae family in North America including mule deer, elk, moose, and caribou. The first case of CWD in Iowa was found in 2012 on a hunting preserve in the southeastern part of the state. In that case, it was determined the CWD-positive mature buck had been transferred to the hunting preserve from a deer farm in north central Iowa. Subsequent testing found CWD at the deer farm. The farm was placed under quarantine, but the owners sued for compensation. The litigation prevented the farm from being depopulated of deer until August 2014. The Iowa Department of Agriculture and Land Stewardship conducted testing. Results were released in early October 2014, stating that 284 of 356 deer (80 percent) from a captive herd in north -central Iowa tested positive for chronic wasting disease. The DNR has tested 100,198 wild deer for CWD since 2002; the total confirmed CWD-positive wild deer in Iowa is 262, or less than one percent. RahiPs The Centers for Disease Control and Prevention (CDC) collect information about cases of animal and human rabies from state health departments and summarize the information in an annual report. The most recent report from Iowa Department of Public Health dates from 2018, however, Dubuque County Animal Control provided statistics for the years 2019-2022. Table 3.19 summarizes the occurrence of rabies in Dubuque County from 2011-2018. Table 3.19. Rabies Cases in Dubuque County, 2011-2022 Year Confirmed Rabies Cases Animal/# 2022 Bat/1 2021 Bat/1 2020 Bat/1 2019 Bat/1 2018 Bat/1 2017 Bat/1 2016 0 2015 0 2014 0 2013 0 2012 1/Feline 2011 0 Source: Iowa Department of Public Health, Center for Acute Disease Epidemiology and Dubuque -County Animal Control. According to the U.S. Department of Agriculture's Risk Management Agency, during the six -year period from 2017, combined crop insurance payments for damages resulting from insects, plant disease and wildlife totaled $198,474 in Dubuque County. The Iowa Statewide average for insurable crop acres with insurance is 89 percent (USDA Risk Management Agency, 2015 Iowa Crop Insurance Profile. Table 3.20 provides a summary of insured crop losses because of crop infestations. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 75 Table 3.20. Crop Insurance Payments for Crop Pests/Diseases 2014-2022 Damage Cause Sum of Indemnity Amount Sum of Determined Acres Insects $7, 797.50 38 2017 $7, 797.50 38 Plant Diseases $125,577.00 $1,013.00 2015 $89, 485.00 771 2016 $36,092.00 242 Wildlife $65,099.05 334 2014 $1,924.65 4 2015 $5, 886.00 13 2016 $4,137.00 39 2017 $33, 505.70 216 2019 $199.00 7 2020 $2, 808.60 33 2021 $5, 098.50 9 2022 $11, 539.60 13 Grand Total $198,473.55 $1,385.00 Source: USDA Risk Management Agency Probability of Future Occurrence The planning area experiences some level of agricultural loss every year because of naturally - occurring diseases that impact animals/livestock. The concern is when the level of an infestation escalates suddenly, or a new infestation appears, overwhelming normal control efforts. Normal control efforts include crop insurance and employment of various other agricultural practices that limit impact. For purposes of determining probability of future occurrence, the HMPC defined "occurrence" as an infestation occurring suddenly, a new infestation, or infestation that overwhelmed normal control efforts. Research did not reveal any infestations in Dubuque County that have reached this level of defined "occurrence". Therefore, it was determined that the probability of this defined "occurrence" of agricultural infestation is "Unlikely". Vulnerability Overview A widespread infestation of animals/livestock and crops could impact the economic base of the County. According to the USDA 2017 Census of Agriculture, Dubuque County agriculture provides 7,023 jobs. (Source: Coalition to Support Iowa's Farmers.) In 2017 the total market value of Dubuque County's agricultural products sold was more than $440 million. With this contribution of agriculture to the economy, a wide -scale agricultural infestation could severely impact the economic stability of the County. Potential Losses to Existing Development Buildings, infrastructure, and critical facilities are not vulnerable to this hazard. Its impacts are primarily economic and environmental, rather than structural effects. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 76 Rough estimates of potential direct losses from a maximum threat event fall in a range of 1-75 percent of livestock receipts. The market value of all livestock in Dubuque County in 2012 was $267,757,000. Based on a worst -case scenario where 75 percent of livestock is lost each year due to agricultural infestations, the total direct costs could exceed $200 million. Table 3.21 provides the annual crop losses for insurable crops. The insurable loss is adjusted to estimate losses to all insurable crops by considering that 89 percent of insurable crops in the State were insured (2015 Iowa Crop Insurance Profile from USDA's Risk Management Agency). Table 3.21. Estimated Insurable Crop Losses Resulting from Disease, Infestation, and Wildlife Annual Crop Insurance Adjusted 10-year Estimated Paid-10 yrs. Losses Losses $214,307 $240,794 $24,079 Source: USDA Risk Management Agency; adjust loss calculation by ECIA Rough estimates of potential direct losses from a maximum threat event fall in a range of 1-50 percent of annual crop receipts. The market value of all crops sold in Dubuque County in 2017 was $128.3 million. Based on a worst -case scenario where 50 percent of crop production is lost each year due to agricultural infestations, the total direct costs could exceed $64 million. The U.S. Forest Service estimates that Dubuque County has up to 500,000 ash trees in the County. Removal of debris if an infestation occurs would be challenging and costly. If only 10 percent of the Ash trees were impacted in Dubuque County that could translate to 50,000. It is estimated that it costs $682 to replace each Ash tree, which translates to over $34 million. Future Development Future development is not expected to significantly impact the planning area's vulnerability to this hazard. However, if crop production and numbers of animals/livestock increases, the amount vulnerable to infestation also increases. Regarding the Emerald Ash Borer, the Iowa Department of Natural Resources recommends that other native tree species be planted in lieu of Ash trees to avoid increasing vulnerability to infestation of the Emerald Ash Borer. Climate Change Impacts The climate change impacts below are excerpted from the 2010 Report on Climate Change Impacts on Iowa developed by the Iowa Climate Change Impacts Committee Crops Despite great improvements in yield potential over the last several years, crop production remains highly dependent on climate in conjunction with other variables. The overall effect of climate change on crop productivity in Iowa remains unclear, as positive climatic events could be overridden by the impacts of poor management or genetics, or favorable management and genetics could override negative climate events. Regardless of these interactions, it is certain that climate changes will affect future crop production. Greenhouse and growth chamber studies suggest increases in atmospheric carbon dioxide (CO2) will Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 77 generally have a substantial positive effect on crop yields by increasing plant photosynthesis and biomass accumulation. Greater precipitation during the growing season, as we have been experiencing in Iowa, has been associated with increased yields; however, excessive precipitation early in the growing season adversely affects crop productivity. Waterlogged soil conditions during early plant growth often result in shallower root systems that are more prone to diseases, nutrient deficiencies, and drought stress later in the season. An increase in temperature, especially during nighttime, reduces corn yield by shortening the time in which grain is accumulating dry matter (the grain fill period). According to research, Iowa's nighttime temperatures have been increasing more rapidly than daytime temperatures. The current changes in precipitation, temperature, wind speeds, solar radiation, dew -point temperatures, and cloud cover imply less ventilation of crops and longer dew periods. Soybean plants readily absorb moisture, making harvest problematic. One adaptive approach to these conditions involves farmers purchasing larger harvesting equipment to speed harvest, compensating for the reduced daily time suitable for soybean harvest. The recent extreme weather events involving greater intensity and amount of rainfall have increased the erosive power of Iowa's precipitation, resulting in significant erosion of topsoil. The impact of climate change on the erosive force of precipitation in the U.S. is expected to increase by as much as 58%. These rates are expected to increase exponentially as precipitation continues to rise. Plant disease can also increase as temperature, soil wetness, and humidity increase as these conditions favor the development of various plant diseases. Animals Even though Iowa ranks first in hog and fifth in cattle production nationwide, there is a lack of information about the effects of climate change on animal production in Iowa. Nevertheless, our general knowledge and principles pertaining to livestock and extreme weather events are applicable to Iowa's changing climate conditions. High temperatures have been shown to reduce summer milk production, impair immunological and digestive functions of animals, and increase mortality rates among dairy cattle. In general, domestic livestock can adapt to gradual changes in environmental conditions; however, extended periods of exposure to extreme conditions greatly reduce productivity and is potentially life threatening. 3.5.2 Dam/Levee Failure & High Hazard Potential Dams Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 1 1 1 4 1.30 Low Profile Hazard Description Many of Iowa's community settlements were founded along rivers and streams due to their reliance Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 78 on water resources. Often, these streams or rivers later needed a dam or levee for flood control or a reservoir for a constant water source. This section discusses both dam and levee failure. Dam Failure A dam is defined as a barrier constructed across a watercourse for the purpose of storage, control, or diversion of water. Dams are typically constructed of earth, rock, concrete, or mine tailings. Dam failure is the uncontrolled release of impounded water resulting in downstream flooding, affecting both life and property. Dam failure can be caused by any of the following: flooding; earthquakes; flow blockages; landslides; lack of maintenance; improper operation; poor construction; vandalism; or terrorism. Levee Failure Levee Failure is the uncontrolled release of water resulting from a structural failure. Possible causes of the failure could include flooding, earthquakes, blockages, landslides, lack of maintenance, improper operation, poor construction, vandalism, terrorism, erosion, piping, saturation, or under seepage. Geographic Location/Extent Dams in Planning Area The thresholds for when a dam falls under State regulation are outlined in Iowa Administrative Code 567-71.3 and are listed below. The thresholds are primarily based on both dam height and water storage volumes. State regulated dams are those dams that meet the following: In rural areas: a. Any dam designed to provide a sum of permanent and temporary storage exceeding 50 acre-feet at the top of dam elevation, or 25 acre-feet if the dam does not have an emergency spillway, and which has a height of 5 feet or more. b. Any dam designed to provide permanent storage in excess of 18 acre-feet and which has a height of 5 feet or more. c. Any dam across a stream draining more than 10 square miles. d. Any dam located within 1 mile of an incorporated municipality, if the dam has a height of 10 feet or more, stores 10 acre-feet or more at the top of dam elevation and is situated such that the discharge from the dam will flow through the incorporated area. In urban areas: Any dam which exceeds the thresholds in 71.3 (1) "a", "b", or "d". Low head dams: Any low head dam on a stream draining 2 or more square miles in an urban area, or 10 or more square miles in a rural area. Dams are classified by the State of Iowa into three categories based on the potential risk to people and property in the event of failure (see Table 3.22). The classification can change over time due to changes in development downstream from the dam. In addition, older dams may not have been built to the standards of their updated classification when this occurs. The Iowa Department of Natural Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 79 Resources performs annual inspections on all high hazard dams in the State. Table 3.22. Dam Hazard Classification Definitions Hazard Class Definition High A structure shall be classified as high hazard if located in an area where failure may create a serious threat of loss of human life or result in serious damage to residential, industrial, or commercial areas, important public utilities, public buildings, or major transportation facilities. Moderate A structure shall be classified as moderate hazard if located in an area where failure may damage (Significant)* isolated homes or cabins, industrial or commercial buildings, moderately traveled roads or railroads, interrupt major utility services, but without substantial risk of loss of human life. In addition, structures where the dam and its impoundment are of themselves of public importance, such as dams associated with public water supply systems, industrial water supply or public recreation, or which are an integral feature of a private development complex, shall be considered moderate hazard for design and regulatory purposes unless a higher hazard class is warranted by downstream conditions. Low A structure shall be classified as low hazard if located in an area where damages from a failure would be limited to loss of the dam, loss of livestock, damages to farm outbuildings, agricultural lands, and lesser used roads, and where loss of human live is considered unlikely. Source: Iowa Department of Natural Resources; 'the term "moderate" is used by the Iowa Department of Natural Resources. However, the National Inventory of Dams uses the term "significant' to identify the same general hazard classification For this plan update, both the National Inventory of Dams as well as the State -regulated dam inventory were consulted. There are 13 regulated dams within the county boundaries of Dubuque County. Of the 13 dams, two are High Hazard dams, four are Significant Hazard dams, and seven are Low Hazard dams. One of the high hazard dams is a federal dam; the Mississippi River Lock & Dam No. 11, which is owned and operated by the U.S. Army Corps of Engineers. The high and significant hazard dams in the county are listed below with the nearest jurisdiction and distance: • Carter Road Stormwater Detention Dam, High Hazard — 2835 Carter Rd., Dubuque • Mississippi River Lock & Dam No. 11, High Hazard — 3000 Lock & Dam Rd., Dubuque • Seippel Road Dam, Significant Hazard — 12981 Seippel Road, Dubuque • Southeast Dam (Dubuque), Significant Hazard — Public Safety Way, Dubuque • West 32nd St Stormwater - Lower Dam, Significant Hazard — 185 W 32nd St, Dubuque Aerial images of these dams are provided below in Figure 3.3 through 3.7. Figure 3.3 Carter Road Stormwater Detention Dam Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 80 _- ■ jdfi R � K y Tom': - xW' } • - - 4ti - f.-+.s rti IF r airy Rd� 'y -, .14 . s° �oe l6aviY5t��' 1.r► Fd4h45t m �..m+,Ed4h I w'3a � • Bee Branch � �` �� I ' s me 8t } � Ws32 • ��''i.`r .N•• Culhollc Schoo!'•' •. .,N�Holy~G�host a yr .a ■ 4 # Citho��c Church, H°ly. Deco .art S ate ,- ■ —� / 03" rrt, r /5• 'to . + f Dams Upstream of Planning Area The planning committee expressed concern regarding Lake Delhi dam. This upstream dam in Delaware County on the Maquoketa failed during flooding in 2010 and was rebuilt in 2016. Levees in Plannina Area The National Levee Database and the FEMA Flood Insurance Rate Map were consulted to identify levees in the planning area. There are two levee segments in Dubuque County as follows: • Dubuque Levee-5.5 miles long. This Corps Program levee was constructed in 1973 by the USACE and then turned over to the sponsors for operations and maintenance. The sponsors are the City of Dubuque and the Royal Oaks Development Corporation. It received a "Minimally Acceptable" inspection rating by USACE in December 2022. The levee protects almost all the City of Dubuque from Mississippi River flooding to an elevation of 615.47 msl (river state 30.o"). Only Dubuque's Chaplain Schmitt Island and Catfish Creek valley lie outside the protection of Dubuque's floodwall levee. The levee withstood river crests as high as 611.93 msl (river state 26.46'). FEMA certified Dubuque's floodwall and levee system in 2011. • Cascade Levee-0.96 miles long. This Corps Program levee was locally constructed and is locally operated and maintained by the City of Cascade. It received an "Acceptable" Inspection rating by USACE in May 2015. The North Fork of the Maquoketa River flows through the City of Cascade between Fillmore and Pierce Streets. Several small ephemeral streams flow through the community into the North Fork of the Maquoketa River. In 1925, the City of Cascade experienced a catastrophic and unprecedented flood following cloudbursts. Property damage was estimated at $500,000. The area that received the most damage is located southward along Johnson Street. As a result, Upstream of the US Highway 151 Bridge, levees were constructed on both banks; downstream of the bridge, a levee was built only on the west bank since the east bank was sufficiently high. Portions of the levee have been sandbagged during high -flow conditions. The levee on the west bank of the river, upstream of the bridge, is responsible for protecting the highly developed daddle-like area that was damaged in the 1925 flood. In April 1990, the Rock Island District COE inspected and evaluated the existing condition of the city's flood -control project under Public Law 84-99. Based upon the results of the field inspection and the evaluation, the overall condition of the levee in the City of Cascade was rated unacceptable. The levee crown was rated at approximately a 10-year frequency. Based on the 1990 COE inspection and evaluation, the City of Cascade completed two installments of levees. In 1999-2000, the city constructed a levee on the south portion of the west bank of the river and the second portion was installed in fall 2011. The Corps of Engineers inspects annually and makes recommendations; however, the second extension has not yet been tested as there has been no heavy rain since it was constructed. This portion of the levee was locally funded. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 84 In 2009, rip rap and rock were put in to stabilize the north side of the western back bank as well. The bank on the north end is not completely rip -rapped and is only an earthen levee due to funding. Downstream from the bend in the North Fork of the Maquoketa River is rip -rapped, which is where the force of the water is greatest. Figure 3.8 shows the locations of both levees in Dubuque County. Figure 3.8 and Figure 3.10 provide close-up images of Dubuque and Cascade Levees. The purple shaded areas represent the levees areas. Figure 3.8 Dubuque County, Iowa Levees 28 -}S C D ickeywille Holy Luxemburg C rossR Dubuque Ntvo Dura Levee ;ills ; } ,,�, ,, �'ix��l �;• SY ILLI Dubuque Farley E p,-vb rth � 202 Cascade 7- - - - - - Levee Be Source: National Levee Database Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 85 Figure 3.9 Dubuque Levee rp:% 151 77" .1111, Y Z �k f J pa Alp O&un1YPd Lit A Lo`r6!5 Callege dye R 27 %w Awe Af- Source: USACE National Levee Database Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 86 Figure 3.10 Cascade Levee Q3 I ascWe .hurt Senior Highs S& '3rd Ave SEW ZZ 2nd Ave N 3 Zrd 1 si Ave W 4th Ave 8VV M 51h Ave SIN CL rp 611) Ave S A h Ave SVY Source: USACE National Levee Database Previous Occurrences Dam Failure (?? €,e few Rd 1ffq To determine previous occurrences of dam failure within Dubuque County, the 2019 Dubuque County Multi -Jurisdictional Hazard Mitigation Plan, the Iowa State Hazard Mitigation Plan, and the Stanford University's National Performance of Dams Program were reviewed for historical dam failures. No record of dam failure within Dubuque County boundaries was found. I cvcc P:71I1 irc No events of levee failure in Dubuque have occurred since completion of its 64-mile-long earthen and concrete levee in 1973. Probability of Future Occurrence The flooding of 1993 and again in 2008 was so great that the limits of many levees were tested and sometimes exceeded. Of the 275 Corps of Engineers levees affected by the 1993 flood, Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 87 85% held, of the 15% that failed, 31 overtopped (11 %), eight (8) eroded and ruptured (3%), and three (3) breached (1 %). The performance of non-federal levees was much worse: only 43% withstood the trauma, and 800 of 1,400 failed. The rate of failure of a levee or floodwall is difficult to predict with sudden failure a possibility. Both the Corps of Engineers and City of Dubuque Engineers agree that "overtopping" of the Dubuque levee is a more likely scenario than levee failure. Vulnerability Overview Dam Failure Dam or levee failure is typically an additional or secondary impact of another disaster such as flooding or earthquake. Additional details on the high and significant hazard dams are provided below: Table 3.23. High and Significant Hazard Dams in Dubuque County Dam Name Hazard NID Owner Name NID Height Height NID Primary River Class ID Storage Purpose Carter Road Stormwater High IA03512 City of 41 170 Recreation Bee Detention Dubuque Branch Dam Mississippi High IA00003 USACE 43 170000 Navigation Mississippi River Dam 11 River Seippel Road City of Flood Tr- Middle Dam Significant IA03303 Dubuque 34 211 Control Fork Catfish Southeast Tr- Middle Dam Significant IA03304 City of 24 223 Flood Fork (Dubuque) Dubuque Control Catfish Creek West 32nd St City of Flood Bee Stormwater - Significant IA03907 Dubuque 8 111 Control Branch Lower Dam West 32nd St City of Flood Bee Stormwater - Significant IA03906 Dubuque 23 63 Control Branch Upper Dam Source: National Inventory of Dams, Iowa Department of Natural Resources The High Hazard state -regulated dam is routinely inspected by the Iowa Department of Natural Resources. The Carter Road facility was inspected in 2023 and found to be in fair condition. The dam received the rating due to debris and eroded soil in and around the outlet trash rack, the condition of the trash rack, and the overgrowth around the principal spillway inlet and outlet areas. These issues were addressed following the inspection. In late 2022, an Emergency Action Plan was established for the Carter Road Stormwater Detention Dam for the purpose of eliminating injury, loss of life, and minimizing property damage during an unusual or emergency event at the dam. It defines responsibilities and procedures to identify conditions that might endanger the dam, contact information to notify appropriate emergency personnel, and steps to take for possible mitigating actions. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 88 Levee Failure The Corps of Engineers conducts two types of levee inspections as part of the Levee Safety Program: Routine Inspections, also called annual inspections or continuing eligibility inspections, are visual inspections that verify proper levee system operation and maintenance. Routine Inspections are conducted on an annual basis. Periodic Inspections provide a more rigorous assessment than the Routine Inspection and include a more detailed and consistent evaluation of the condition of the levee system. Periodic Inspections verify proper operation and maintenance; evaluate operational adequacy, structural stability, and safety of the system; and compare current design and construction criteria with those in place when the levee was built. Periodic Inspections are conducted every five years. Inspection results of acceptable, minimally acceptable, or unacceptable are provided to project sponsors to address deficiencies. Additionally, the District will work with sponsors to identify performance concerns, areas for further analysis, changes in design criteria and potential consequences of levee failures that need to be addressed to provide the continued safety of the levee. The Dubuque Levee inspection of December 2022 ranked it as "minimally acceptable". This is because the overall rating defaults to the lowest individual component rating of the inspection. and Cascade (2015) Levees received "Acceptable" ratings from their most recent inspections. Potential Losses to Existing Development The jurisdictions that would be impacted in the event of failure of the high or significant hazard dams or levees are discussed below relative to the applicable flood protection structure: • Carter Road Stormwater Detention Dam, High Hazard —City of Dubuque (0 miles) • Mississippi River Lock & Dam No. 11, High Hazard —City of Dubuque (1 mile) • Seippel Road Dam, Significant Hazard —City of Dubuque (0 miles) • Southeast Dam (Dubuque), Significant Hazard —City of Dubuque (0 miles) • West 32nd St Stormwater - Lower Dam, Significant Hazard —City of Dubuque (0 miles) • West 32nd St Stormwater - Upper Dam, Significant Hazard —City of Dubuque (0 miles) • Dubuque Levee —City of Dubuque • Cascade Levee —City of Cascade Dam Failure Based on the definition of high hazard dams, failure of these dams could create a serious threat of loss of human life or result in serious damage to residential, industrial, or commercial areas, important public utilities, public buildings, or major transportation facilities. For the significant hazard dams, failure could result in damage to isolated homes or cabins, industrial or commercial buildings, moderately traveled roads or railroads, or interrupt major utility services, but without substantial risk of loss of human life. Inundation maps were provided by the Iowa DNR for Carter Road Stormwater Detention Dam. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 89 Inundation maps were not available for other dams in the planning area. Combined with the parcel data in a GIS format with assessed values, the inundation map allowed comparative analysis of this layer to determine parcels and improvement values by type that fall within the boundaries of the dam inundation area. GIS was used to create a centroid or point representing the center of the parcel polygon. The dam inundation area was then overlaid on the parcel centroids. For the purposes of this analysis, if the dam inundation area intersected a parcel centroid, inundation was assigned for the entire parcel. The model assumes that every parcel with a building or dwelling value greater than zero is improved in some way. Specifically, an improved parcel assumes there is a building on it. It is important to note that there could be more than one structure or building on an improved parcel (i.e., condo complex occupies one parcel but might have several structures). In these cases, the analysis counts this as one structure. Only improved parcels and the value of their improvements were analyzed. The result is an inventory of the number and types of parcels and buildings subject to dam failure. Table 3.24 provides the numbers of improved parcels (structures), and values by type of parcel that are in the dam inundation area according to the analysis methodology described above. Table 3.24. Assets at Risk to Failure of the Carter Road Stormwater Detention Dam Jurisdiction Property Type Improved Parcel Counts Improved Value Content Value Total Exposed Value Commercial 76 $11,770,659 $11,770,659 $23,541,318 Exempt 18 $5,172,292 $5,172,292 $10,344,584 Dubuque Industrial 11 $1,938,160 $1,938,160 $3,876,320 Multi -Residential 19 $2,376,160 $2,376,160 $4,752,320 Residential 634 $36,693,960 $36,693,960 $73,387,920 Total 758 $57,951,231 $57,951,231 $115,902,462 Source: Parcel layer and improved values from Dubuque County, Inundation layers from Iowa Department of Natural Resources, analysis by ECIA. To determine the potential number of people that might be impacted by failure of the Carter Road Stormwater Detention Dam, the average household size from the 2020 U.S. Census (2.40) was multiplied by the number of dwellings (residential structures) in the dam inundation areas (653). This revealed approximately 1,567 people at risk to failure of this dam. This analysis is limited due to the uncertainty of how many separate households are in the multi- residential structures. Levee Failure GIS data was available from the National Levee Inventory to identify the levee protected areas for both the Cascade Levee and the Dubuque FCW Levee. Combined with the parcel data in a GIS format with assessed values, this allowed comparative analysis of these two layers to determine parcels and improvement values by type that fall within the boundaries of the levee protected areas. GIS was used to create a centroid or point representing the center of the parcel polygon. The levee Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 90 protected areas were then overlaid on the parcel centroids. For the purposes of this analysis, if the levee protected area intersected a parcel centroid, the levee protection area (and thus the area prone to failure) was assigned for the entire parcel. The model assumes that every parcel with a building or dwelling value greater than zero is improved in some way. Specifically, an improved parcel assumes there is a building on it. It is important to note that there could be more than one structure or building on an improved parcel (i.e., condo complex occupies one parcel but might have several structures). In these cases, the analysis counts this as one structure. Only improved parcels and the value of their improvements were analyzed. The result is an inventory of the number and types of parcels and buildings subject to levee failure. Table 3.25 provides the numbers of parcels, improved parcels (structures), and values by type of parcel that are in the levee protected areas of the Cascade Levee and Dubuque Levee according to the analysis methodology described above. Table 3.25. Assets at Risk to Levee Failure — Cascade Levee & Dubuque Levee Cascade IA Levee Analysis Jurisdiction Property Type Improved Parcel Counts Improved Value Content Value Total Exposed Value Cascade Commercial 26 $873,888 $873,888 $1,747,776 Exempt 7 $320,640 $320,640 $641,280 Multi -Residential 2 $440,400 $220,200 $660,600 Residential 43 $3,155,810 $1,577,905 $4,733,715 Total 78 $4,790,738 $2,992,633 $7,783,371 Dubuque FCW Levee Analysis Jurisdiction Property Type Improved Parcel Counts Improved Value Content Value Total Exposed Value Dubuque Commercial 563 $225,878,984 $225,878,984 $451,757,968 Exempt 99 $113,798,192 $113,798,192 $227,596,384 Industrial 51 $37,394,340 $56,091,510 $93,485,850 Multi -Residential 102 $15,379,320 $7,689,660 $23,068,980 Residential 1,790 $110,709,820 $55,354,910 $166,064,730 Total 2,605 $503,160,656 $458,813,256 $961,973,912 Source: Parcel layer and improved values from Dubuque County, Levee Protected areas from the National Levee Inventory, analysis by ECIA. According to this analysis, there is nearly $8 million in improvements / contents value in the area protected by the Cascade Levee and nearly $1 billion in improvements / contents value in the area protected by the Dubuque Levee. To determine the potential number of people that might be impacted by levee failure, the average household size from the 2010 U.S. Census was multiplied by the number of dwellings (residential structures) in the levee protected areas. This analysis is limited due to the Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 91 uncertainty of how many separate households are in the multi -residential structures. Table 3.26. Population at Risk to Levee Failure — Cascade Levee & Dubuque Levee Levee # Residential structures Average Household Size Est. People at Risk Cascade 45 2.40 108 Dubuque 1,892 2.40 4,541 Source: # Residential Structures — ECIA Analysis Results; Average Household Size — U.S. Census 2010 Decennial Census; Critical Facilities and Infrastructure at Risk to Dam or Levee Failure To analyze critical facilities at risk in the planning area, the inventory of critical and essential facilities and infrastructure in the planning area was compiled from data layers provided by Dubuque County. A comparison was made of the critical facilities with the dam inundation area for the Carter Road Dam and the levee protected areas from the National Levee Database for the Cascade and Dubuque Levees to determine those facilities that could be impacted in the event of levee failure. This analysis revealed 55 critical facilities at risk of Dam or Levee Failure. The summary results of this analysis are provided in Table 3.27. Table 3.27. Critical Facilities and Infrastructure at Risk to Dam or Levee Failure d L — •v v U m V C f� r Y r - Y r cp CL E >� = U Gi r L _4) lL o Q S% LL U fC 0_ Y y N 1= N V4) >N E O 0C O dy V OUC :3 O > C O O ~ WN y > — U YcN 6 — c LO O LL_ ° ~Yf6 Dam - Levee C V y > s E=L O °° m NJurisdiction ma> = Name E m o 0 o 4) L o ° 4)° u u t L ;° ;a 4)L U v U U ii O x M z O CO CO v) v) CO H H O Cascade Cascade Levee 1 1 Dubuque Carter Road Dam 1 1 1 1 1 1 1 1 8 Dubuque Levee 1 3 1 1 1 3 1 1 2 1 1 4 9 4 1 10 1 1 46 Grand Total 1 4 1 1 1 4 1 2 2 1 1 1 4 9 6 2 11 2 1 55 Appendix E provides the list of critical facilities that were inventoried and analyzed as well as the specific names of facilities at risk to dam or levee failure. This Appendix is redacted from the public version of this plan. To obtain access for official use, contact the Dubuque County Emergency Management Agency. Future development located downstream from dams in floodplains or inundation zones and/or in levee protected areas would increase vulnerability to dam or levee failure. Climate Change Impacts Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 92 Increased frequency of precipitation and precipitation extremes leading to flooding could cause additional stress on dam and levee structures. 3.5.3 Drought Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 3 2 1 4 2.50 Moderate Profile Hazard Description Drought is generally defined as a condition of moisture levels significantly below normal for an extended period over a large area that adversely affects plants, animal life, and humans. There are four types of drought conditions relevant to Iowa: Meteorological drought is defined based on the degree of dryness (in comparison to some "normal" or average amount) and the duration of the dry period. A meteorological drought must be considered region -specific since the atmospheric conditions that result in deficiencies of precipitation are highly variable from region to region. Hydrological drought is associated with the effects of periods of precipitation (including snowfall) shortfalls on surface or subsurface water supply (e.g., streamflow, reservoir and lake levels, ground water). The frequency and severity of hydrological drought is often defined on a watershed or river basin scale. Although all droughts originate with a deficiency of precipitation, hydrologists are more concerned with how this deficiency plays out through the hydrologic system. Hydrological droughts are usually out of phase with or lag the occurrence of meteorological and agricultural droughts. It takes longer for precipitation deficiencies to show up in components of the hydrological system such as soil moisture, streamflow, and ground water and reservoir levels. As a result, these impacts are out of phase with impacts in other economic sectors. Agricultural drought focuses on soil moisture deficiencies, differences between actual and potential evaporation, reduced ground water or reservoir levels, and so forth. Plant water demand depends on prevailing weather conditions, biological characteristics of the specific plant, its stage of growth and the physical and biological properties of the soil. Socioeconomic drought refers to when physical water shortage begins to affect people. The four different types of droughts can all occur in Iowa. A meteorological drought is the easiest to determine based on rainfall data and is an easier drought to monitor from rain gauges and reports. A hydrological drought means that stream and river levels are low, which also has an impact for surface water and ground water irrigators. In addition, in -stream discharges that fall below a pre -required level also place the State in regulatory difficulty with U.S. Fish and Wildlife and with neighboring states over cross -border flowage rights. An agricultural drought represents difficulty for Iowa's agricultural -based economy and is also relatively easy to monitor based on crop viability for different regions. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 93 The National Drought Mitigation Center (NDMC) located at the University of Nebraska in Lincoln provides a clearinghouse for information on the effects of drought, based on reports from media, observers, and other sources. NDMC's website is found at http://www.drought.unl.edu/. Specific drought impacts by county are recorded at http://droughtreporter.unl.edu/. The NDMC categorizes impacts of drought as economic, environmental, or social. Many economic impacts occur in agriculture and related sectors, including forestry and fisheries, because of the reliance of these sectors on surface and subsurface water supplies. In addition to obvious losses in yields in both crop and livestock production, drought is associated with increases in insect infestations, plant disease and wind erosion. Droughts also bring increased problems with insects and disease to forests and reduce growth. The incidence of forest and range fires increases substantially during extended droughts, which in turn places both human and wildlife populations at higher levels of risk. Income loss is another indicator used in assessing the impacts of drought because so many sectors are affected. Although drought is not predictable, long-range outlooks may indicate an increased chance of drought, which can serve as a warning. A drought period can last for months, years, or even decades. It is rarely a direct cause of death, though the associated heat, dust and stress can all contribute to increased mortality. Geographic Location/Extent According to the 2017 Census of Agriculture, of the 608 square miles (389,120 acres) of land area in Dubuque County, 82 percent (313,476 acres) is utilized for agricultural purposes. There were 1,402 farms with an average size of 224 acres per farm. Although the entire planning area in Dubuque County is at risk of drought, the agricultural areas are more vulnerable to the immediate effects of drought. The map in Figure 3.1 in the Animal/Plant/Crop Disease hazard section displays the locations of various cropland uses in Dubuque County. Previous Occurrences According to the Iowa Environmental Mesonet, the average annual precipitation for Dubuque County is 32 inches. In average years, this represents enough rainfall to prevent drought; however, successive years of below -average rainfall are the cause drought impacts in the planning area. Table 3.28 provides the rainfall history at the Dubuque weather station from 1955 to February 2017. Complete years with less than 30 inches of rain include 1955, 1956, 1958, 1976, 1988, 1989, 1995, 1997, 2005, 2012, and 2021. The lowest annual precipitation on record occurred in 1988 with 22.7 inches. Table 3.28. Monthly and Annual Precipitation Totals, 1951 to 2021, Dubuque Lock - and -Dam, Iowa Weather Station YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN 1955 0.28 0.98 1.21 3.29 2.72 4.06 1.38 2.47 2.73 2.7 0.27 0.69 22.78 1956 0.5 0.83 0.65 4.5 4.04 1.48 3.56 3.94 1.44 0.69 2.02 1.14 24.79 1957 0.47 0.69 0.96 2.78 5.71 3.34 5.56 5.44 1.13 1.69 2.17 1.71 31.65 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 94 YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN 1958 0.66 0.07 0.29 2.54 0.65 6.08 2.08 4.18 1.25 3.46 1.61 0.55 23.42 1959 1.36 1.61 3.66 4.43 4.26 3.09 4.98 5.45 2.46 5.93 1.99 1.56 40.78 1960 4 0.7 1.78 3.93 5.52 2.74 1.33 3.59 3.71 2.94 1.26 0.7 32.2 1961 0.27 1.13 4.32 1.64 1.13 2.45 5.64 2.22 7.95 4.33 6.2 1.01 38.23 1962 0.76 1.95 1.64 2.77 6.99 2.17 6.26 3.09 1.67 2.92 0.31 0.59 31.12 1963 0.46 0.32 1.89 2.9 1.65 1.67 4.1 2.09 2.17 0.09 2.49 0.54 20.37 1964 0.22 0.22 1.41 5.18 5.52 2.53 1.68 3.21 1.43 0.01 1.39 0.43 23.23 1965 1.56 0.75 2.8 4.98 3.36 0.79 1.16 9.32 8.73 1.58 1.7 1.94 38.67 1966 1.72 1.06 2.3 1.43 2.55 5.84 2.06 1.71 1.86 0.78 0.53 3.46 25.3 1967 0.65 0.92 1.88 3.28 2.11 5.81 0.34 1.92 7.41 5.14 1.98 1.11 32.55 1968 0.5 0.31 0.74 4.09 2.06 5.43 1.2 4.1 6.98 1.06 0.8 2.09 29.36 1969 2.48 0.24 0.47 3.43 2.87 14.28 5.11 0.02 1.21 3.96 0.59 1.28 35.94 1970 0.3 0.29 2.36 1.79 4.77 5.4 2.08 4.53 8.74 1.6 1 1.75 34.61 1971 1.46 2.87 1.6 1.36 2.55 2.11 3.21 2.94 3.93 2.61 3.54 3.72 31.9 1972 0.66 0.43 1.84 3.89 3.21 2.03 8.92 9.37 9.83 3.24 1.23 1.75 46.4 1973 1.44 0.7 4 6.78 6.09 3.43 3 1.9 8.1 0.82 2.11 1.75 40.12 1974 2.39 0.85 3.08 3.85 5.74 6.63 2.18 4.39 0.62 2.56 2.01 1.54 35.84 1975 0.84 1.73 2.6 3.4 2.28 3.83 2.14 4.63 1.26 0.48 3.81 0.21 27.21 1976 0.2 2.39 3.84 4.07 0.98 1.75 2.05 1.99 0.65 2.24 0.02 0.29 20.47 1977 0.49 0.29 4.14 2.79 2.23 3.3 5.84 5.96 3.84 2.12 2.5 0.95 34.45 1978 1.25 0.38 0.58 2.99 6.45 3.37 4.29 1.69 4.55 1.79 2.65 1.4 31.39 1979 1.73 0.59 1.93 2.17 2.2 4.23 5.62 4.49 0.77 2.03 2.02 1.13 28.91 1980 1.54 0.81 0.85 1.38 5.06 3.47 5.43 6.7 5.82 2.5 0.72 0.84 35.12 1981 0.09 2.13 0.27 7.06 1.01 7.09 2.11 8.66 4.55 2.59 1.73 1.28 38.57 1982 1.69 0.18 2.74 1.61 4.86 2.86 6.48 3.14 1.41 3.82 3.86 2.93 35.58 1983 0.84 1.46 1.5 2.89 7.23 1.06 3.38 2.56 3.72 1.4 3.14 1.77 30.95 1984 0.74 0.81 1.19 3.68 3.38 5.98 3.8 1.87 2.4 6.34 1.95 2.22 34.36 1985 0.95 1.92 3.65 1.44 4.41 1.34 1.78 3.44 5.55 4.15 4.27 1.75 34.65 1986 0.64 1.64 2.04 2.35 6.7 6.3 3.5 4.68 10.7 3.79 1.39 0.53 44.26 1987 0.54 0 1.25 1.5 4 1.82 5.59 7.33 2.64 1.02 4.06 2.84 32.59 1988 1.14 0.48 1.74 2.02 1.15 0.67 2.17 2.7 3.05 1.54 2.46 1.2 20.32 1989 1.09 0.6 1.09 1.66 1.43 2.15 4.09 3.16 4.72 2.35 0.53 0.43 23.3 1990 1.36 0.83 3.81 2.5 3.76 4.75 4.3 7.96 0.51 1.61 2.19 2.7 36.28 1991 0.9 0.31 5.57 5.45 3.25 4.4 1.84 3.66 4.29 4.21 4.49 1.38 39.75 1992 1.45 1.2 1.33 3.31 0.74 0.96 6.7 2.32 4.01 0.58 6.2 2.11 30.91 1993 1.45 1.02 2.82 4.35 4.74 8.69 9.57 7.27 3.41 1.05 1.02 0.6 45.99 1994 1.41 1.84 0.85 1.63 2.44 7.24 7.93 5.87 2.94 0.35 2.87 1.28 36.65 1995 0.77 0.15 2.68 5.37 4.49 2.02 5.79 1.55 1.07 4.33 2.96 0.23 31.41 1996 2.7 0.22 0.9 2.15 6.37 7.26 2.23 1.69 1.97 3.49 1.87 1.33 32.18 1997 0.94 2.53 1.24 1.47 5.22 6.62 4.15 3.28 3.5 1.87 1.16 1.11 33.09 1998 0.87 2.35 3.43 5.35 5.02 7.94 2.31 3.48 3.94 4.82 1.14 0.37 41.02 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 95 YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN 1999 2.15 0.87 0.71 6.94 5.11 6.14 5.52 3.56 1.55 1.37 0.73 0.89 35.54 2000 1.21 1.06 0.69 1.55 4.11 8.59 3.12 3.37 2.99 0.66 1.28 2.26 30.89 2001 1.36 3.26 0.92 4.35 4.97 4.65 1.05 3.25 6.74 3.17 1.55 1.37 36.64 2002 0.23 1.41 1.27 3.45 4.72 7.73 6.53 5.14 3.41 4.66 0.3 0.73 39.58 2003 0.58 0.34 1.01 1.83 6.38 3.21 4.4 0.42 4.66 1.53 7.93 1.82 34.11 2004 0.35 1.61 4.35 1.14 8.65 5.52 2.73 2.56 0.7 3.36 2.35 1.49 34.81 2005 2.3 1.17 0.88 2.46 2.99 3.79 3.61 3.32 4.77 0.8 2.3 1.03 29.42 2006 1.31 0.55 3.77 4.98 3.98 4.68 7.85 2.15 5.38 2.34 2.63 1.54 41.16 2007 0.81 1.58 2.12 4.91 1.49 3.93 7.48 8.65 2.86 4.59 0.41 3.96 42.79 2008 1.36 2.97 2.15 7.3 8.58 7.83 3.67 1.58 3.61 1.91 1.6 2.6 45.16 2009 1.01 1.12 4.4 3.23 3.42 3.71 5.82 7.73 1.53 6.87 1.72 3.72 44.28 2010 1.74 0.59 0.9 4.74 6.57 7.63 13.09 3.89 2.63 1.82 1.29 2.8 47.69 2011 1.34 3.39 2.32 4.85 2.72 3.52 14.71 2.51 3.27 1.54 3.71 2.78 46.66 2012 1.26 1.26 2.31 2.58 2.6 1.75 0.85 2.47 1.39 3.48 1.29 2.2 23.44 2013 1.5 2.18 2.45 7.14 5.39 5.2 3.36 3.93 2.44 1.69 2.57 1.02 38.87 2014 1.39 1.33 1.68 6.1 1.36 10.93 3.11 3.2 2 2.76 1.36 1.2 36.42 2015 0.77 1.05 0.68 2.9 4.08 6.43 1.47 2.88 4.85 2.67 5.19 4.76 37.73 2016 0.59 0.81 3.66 2.03 4.95 7.55 7.36 4.94 5.53 2.17 2.75 1.82 44.16 2017 2.13 0.77 2.3 3.83 3.55 3.58 9.21 3.39 0.23 6.25 0.95 0.63 36.82 2018 1.14 2.72 1.13 1.78 4.21 3.44 4.45 6.88 10.03 7.82 1.71 2.02 47.33 2019 2.57 3.7 1.55 4.3 5.56 3.31 5.67 4.24 12.57 8.57 1.16 1.25 54.45 2020 1.95 3.3 3.62 1.66 5.14 7.6 3.93 1.68 6.72 3.34 2.28 3.66 44.88 2021 1.34 0.92 1.96 1.58 2.39 1.68 3.43 3.89 2.17 4.38 0.65 1.96 26.35 According to NOAA, there have been 12 drought events in Dubuque County between July 1, 1950, and July 31, 2023, with a total of $21.3 million in crop damages reported. While the NOAAA database covers severe weather events as far back as 1950, the first recorded drought event in Dubuque County was in August 2003 and recorded $14.9 million in crop damages, or 70% of all damages recorded in the County. According to the USDA's Risk Management Agency, payments for insured crop losses in Dubuque County because of drought conditions occurred in all ten years from 2013-2022 and totaled $8.3 million, more than 66% less than the previous ten years (see Table 3.30). Table 3.30. Crop Insurance Claims Paid from Drought, 2013-2022 Year Insurance Paid 2013 $1,983,319.00 2014 $2,897,403.55 2015 $ 311, 5 60.81 2016 $5,476.00 2017 $147,175.70 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 96 2018 $4,944.00 2019 $1,011.00 2020 $1,757,861.85 2021 $1,044,144.50 2022 $202,910.90 Insurance Paid $8,355,807.31 Source: USDA Risk Management Agency Probability of Future Occurrence NOAA's National Climatic Data Center uses the U.S. Palmer Drought Indices and the Standardized Precipitation Index to monitor and predict drought conditions. Lack of precipitation for a given area is the primary contributor to drought conditions. Since precipitation levels cannot be predicted in the long term, the following indices can be used to determine the probability of future occurrences of drought. The following are the indices: • Palmer Z Index monitors short-term monthly moisture conditions when depart from normal. • Palmer Drought Severity Index measures the duration and intensity of the long-term (meteorological) drought patterns. • Palmer Hydrological Drought Index measures long-term (hydrological) drought and wet conditions reflecting groundwater and reservoir levels. • Standardized Precipitation Index is a probability index that considers only precipitation. This is important for farmers to estimate soil moisture. In the past ten years, there have been ten years with crop insurance claims because of drought in Dubuque County. If this trend continues, this results in a probability of 90% agricultural impacts because of drought in any given year. However, the trend from the previous ten years has been down significantly. Expectations are that Dubuque County will have more precipitation. Vulnerability Overview Dubuque County jurisdictions are impacted by drought because it is an expensive weather disaster; it reduces agricultural productivity and causes a strain on urban water supplies. In Dubuque County, farmers bear the most direct stress from drought as wells may run dry; crops wilt and die, and forage for livestock becomes scarce and costly. Dubuque County has 1,402 farms in the County that cover 313,476 acres of land. This translates to 82 percent of the surface land in the County being used for agriculture. Therefore, the planning area has a high exposure to this hazard. Aside from agricultural impacts, other losses related to drought include increased costs of fire suppression and damage to roads and structural foundations due to the shrink dynamic of expansive soils during excessively dry conditions. Drought also presents hazards to public health in extreme cases, where drinking water production cannot keep up with demand. Water wells become less productive during drought and a failure of remaining productive wells (due to power outage, etc.) can cause public Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 97 drinking water supplies to become compromised. Potential Losses to Existing Development Areas associated with agricultural use are vulnerable to drought conditions which could result in a decrease in crop production or a decrease in available grazing area for livestock. Drought has no real effect on houses and buildings. The impacts would be minimal in terms of landscaping. Rationing water supplies would most likely be the worst -case scenario impact. Future Development Increases in acreage planted with crops would increase the exposure to drought -related agricultural losses. In addition, increases in population add additional strain on water supply systems to meet the growing demand for treated water. Climate Change Impacts For the most part, climate change studies have shown increases in precipitation, rather than decreases. However, drought cycles continue. Climate change studies have also shown some increases in average temperatures. If this occurs during a drought cycle, the drought impacts will be exacerbated and increased agricultural losses will be sustained. 3.5.4 Expansive Soils Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 1 1 1 4 1.30 Low Profile Hazard Description A relatively widespread geologic hazard for Iowa is the presence of soils that expand and shrink in relation to their water content. Expansive soils can cause physical damage to building foundations, roadways, and other components of the infrastructure when clay soils swell and shrinks due to changes in moisture content. The effects of expansive soils are most prevalent in regions of moderate to high precipitation where prolonged periods of drought are followed by long periods of rainfall. These conditions exist in Dubuque County from time to time. The warning time for expansive soils is consistent with other geologic hazards that occur slowly over time. The duration of response to this hazard is limited in the State of Iowa. Although prolonged periods of drought are a primary indicator of risk followed by forecasted periods of precipitation, the response to expansive soils in Iowa is limited and is in large part coupled with response to flash flooding and river flooding. Geographic Location/Extent Figure 3.11 shows a map of the swelling potential of soils in Iowa. Dubuque County has units near the Mississippi River that contain abundant clay, having high swelling potential. The soil in the remainder of the county contains little or no swelling clay. This hazard primarily impacts the following jurisdictions: Unincorporated Dubuque County, Balltown, Rickardsville, Sherrill, Durango, Sageville, Asbury, Graf, Centralia, Peosta, Dubuque, and Zwingle. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 98 Figure 3.11 U.S. Geological Survey Swelling Clays Map of Iowa Source: U.S. Geological Survey publication "Swelling Clays Map of the Conterminous United States" by W.W. Olive, A.F. . Unit Gontains abundant clay having high swelling potential ■Part of unit (generally less than 50%) consists of clay having high swelling potential Unit contains abundant clay having slight to moderate swelling potential ®Part ofund (ganarallyless than 50% consists of clay having slight to moderate swelling potenhat . Unit conteins little or no swelling clay Chleborad, C.W. Frahme, Julius Schlocker, R.R. Schneider, and R.L. Shuster, 1989: Yellow square indicates approximate location of Dubuque County. Previous Occurrences Streets and parking lots throughout the county are damaged every year by the effects of expansive soils as well as underground water lines that are damaged as the soil expands and contracts at varying levels along a water line. The frequency of damage from expansive soils can be associated with the cycles of drought and heavy rainfall, which reflect changes in moisture content. Damages occur with isolated incidents and affect property owners, local governments, and businesses generally make any necessary repairs. Probability of Future Occurrence There will continue to be some damage to paved areas and foundations in Dubuque County due to swelling soils every year. It is unlikely that these damages will become greater in the future unless new development occurs in areas where the hazard is more severe. Certain buildings and construction practices could be put in place to lessen these impacts. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 99 Vulnerability Overview While the entire planning area is vulnerable to some structural damage because of shrinking, and expanding soils, there is no data available to determine damage estimates for this hazard. In most cases, individual property owners, local governments, and businesses pay for repairs to damages caused by this hazard. Underground utility lines such as water and sewer pipes are also at risk of damages associated with expansive soils. However, there is no data to support damages and costs associated with this hazard at this time. This hazard does not impact human safety. Potential Losses to Existing Development Existing development will continue to be vulnerable to expansive soils. Future Development Additional future development in the planning area will also be vulnerable to this hazard. 3.5.5 Extreme Heat Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 3 2 1 3 2.40 Moderate Profile Hazard Description According to information provided by FEMA, extreme heat is defined as temperatures that hover 10 degrees or more above the average high temperature for the region and last for several weeks. Ambient air temperature is one component of heat conditions, with relative humidity being the other. The relationship of these factors creates what is known as the apparent temperature. The Heat Index Chart in Figure 3.12 uses both factors to produce a guide for the apparent temperature or relative intensity of heat conditions. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 100 Figure 3.12 Heat Index (HI) Chart Temperature (7) 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 40 80 81 83 85 88 91 94 97 101 105 109 114 119 124 45 80 82 84 87 89 93 96 100 104 109 114 119 124 50 81 83 85 88 91 95 99 103 108 113 118 124 7 55 81 84 86 89 93 97 101 106 112 117 124 v 60 82 84 88 91 95 100 105 110 116 123 E 65 82 85 89 93 98 103 108 114 121 = m 70 83 86 90 95 100105 112119 75 84 88 92 97 103109 116124 10� 80 84 89 94 100 106 113 121 85 85 90 96 102 110 117 90 86 91 98 105 113 122 95 86 93 100 108 117 100 87 95 103 112 121 Likelihood of Heat Disorders with Prolonged Exposure or Strenuous Activity Caution Extreme Caution Danger ■ Extreme Danger Source: National Weather Service (NWS) http://www.nws.noaa.gov/os/heat/heat_index.shtmi Note: Exposure to direct sun can increase Heat Index values by as much as 15°F. The shaded zone above 105°F corresponds to a HI that may cause increasingly severe heat disorders with continued exposure and/or physical activity. During these conditions, the human body has difficulties cooling through the normal method of the evaporation of perspiration. Health risks rise when a person is over exposed to heat. The most dangerous place to be is in a permanent home, with little or no air conditioning. Those at greatest risk for heat -related illness include people 65 years of age and older, people who are overweight, and people who are ill or on certain medications. However, even young and healthy individuals are susceptible if they participate in strenuous physical activities during hot weather. In agricultural areas, the exposure of farm workers, as well as livestock, to extreme heat is a major concern. Table 3.31 lists typical symptoms and health impacts of exposure to extreme heat. Table 3.31 Typical Health Impacts of Extreme Heat Heat Index (HI) Disorder 80-90° F (HI) Fatigue possible with prolonged exposure and/or physical activity 90-105° F (HI) Sunstroke, heat cramps, and heat exhaustion possible with prolonged exposure and/or physical activity 105-130° F (HI) Heatstroke/sunstroke highly likely with continued exposure Source: National Weather Service Heat Index Program, www.weather.goWos/heat/index.shtml The National Weather Service has a system in place to initiate alert procedures (advisories or warnings) when the Heat Index is expected to have a significant impact on public safety. The expected severity of the heat determines whether advisories or warnings are issued. A common Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 101 guideline for issuing excessive heat alerts is when the maximum daytime Heat Index is expected to equal or exceed 105 degrees Fahrenheit (OF) and the nighttime minimum Heat Index is 80°F or above for two or more consecutive days. A heat advisory is issued when temperatures reach 105 degrees, and a warning is issued at 115 degrees. Geographic Location/Extent The entire planning area is subject to extreme heat and all participating jurisdictions are affected. Previous Occurrences Figure 3.13 illustrates heat -related deaths in the United States using two methodologies. One method shows deaths for which excessive natural heat was stated as the underlying cause of death from 1975 to 2020. The other data series shows deaths for which heat was listed as either the underlying cause or a contributing cause, based on a broader set of data that at present can only be evaluated back to 1999. For example, in a case where cardiovascular disease was determined to be the underlying cause of death, heat could be listed as a contributing factor because it can make the individual more susceptible to the effects of this disease. Because excessive heat events are associated with summer months, the 1999-2013 analysis was limited to May through September. According to the National Weather Service, in 2015, 45 people died nationally because of extreme heat. In 2014, there were 20 heat -related deaths. In 2013 there were 92 and in 2012, there were 155 deaths, while in 2022, 148 died nationally. Only one heat- related death has been reported for Iowa within the last 10 years, occurring in 2019. On average, the hottest months of the year are July and August. According to the High Plains Regional Climate Center, the average temperature in Dubuque County for the month of July is 72.61 degrees Fahrenheit (IF) with an average maximum temperature of 83.28 IF; and the average temperature for the month of August is 70.63 IF with an average maximum temperature of 81.35 IF. (Source: http://www.hprcc.unl.edu/datasets.php?set=CountyData#) Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 102 Figure 3.13 Deaths Classified as "Heat Related" in the United States, 1975-2020 4.0 — Underlying and contributing iu 3.5 causes of death (May —September) Q. Underlying cause of death (all year) y 3.0 CL C C 2.5 E 2.0 a Q. y 1.5 R i ram+ 1.0 R tlrt 0.5 0 1975 1980 19a5 1990 1995 2000 2005 2010 2015 Year 2020 Source: Environmental Protection Agency Figure 3.14 provides the daily temperature averages and extremes for the Dubuque Regional Airport weather station for the period from 1951 to 2023 from the High Plains Regional Climate Center. This graph also shows the observed temperature range. Figure 3.14 Daily Temperature Averages and Extremes, Dubuque Regional Airport, Iowa (1981 — 2010) 125 100 75 50 E 15 E n n -25 :1 -50 Daily Temperature Data DUBUQUE REGIONAL AP, IA ;'�riod of Record - 1951-02-01 to 2023-05-18 '..i . p:.. .. i981-2010. Click and drag to zoom chart. F7w11 37.8 2 3.9 1 1U 9 'w c ri -45.6 Jail 1 Mar 1 May 1 Jul 1 Sep 1 Nov 1 0135eryed temperature range (2022) Ili Normal temperature range — Remrd Max — Record Min Source: High Plains Regional Climate Center, htti3://climod.unl.edu/ Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 103 The following summarizes the National Weather Service Advisories, Watches, and Warnings for Heat or Excessive Heat in Dubuque County from 1986 to 2023 (38 years of data). No excessive heat events have been documented since 2013. • 19 Advisories • 3 Watches • 2 Warnings According to the USDA's Risk Management Agency, insured payments in Dubuque County for damages to crops because of heat from 2013-2021 totaled $79,616.50 — more than 50% less than the previous five years. There was no damage to crops because of hot wind. Table 3.32 shows the insurable crop insurance claims paid in Dubuque County because of heat. Table 3.32 Claims Paid in Dubuque County for Crop Loss as a Result of Heat (2013-2021) Year Insurance Paid 2013 $46,131.00 2017 $12,693.00 2018 $2,415.00 2020 $5,228.00 2021 $515.00 Insurance Paid $79,636.50 Source: Crop Insurance Paid is from the USDA's Risk Management Agency for 2013-2021. Note: There were no claims paid in 2014, 2015, 2016, or 2019. Vulnerability Overview Those at greatest risk for heat -related illness and deaths include people 65 years of age and older, people who are overweight, and people who are ill or on certain medications. To determine jurisdictions within the planning area with populations that may be more vulnerable to extreme heat, demographic data was obtained from the U.S. Census Bureau on numbers of people in each jurisdiction that are over the age of 65 are seen in Table 3.33. Data was not available for overweight individuals and those on certain medications. Overall, Iowans are older than the rest of the country. About 18 percent of its population is over 65 years, compared with 13 percent nationally. Dubuque County's population over 65 years is higher than the national and state averages at 19.5 percent (up nearly 4 percent from 2019. The participating jurisdictions with 20 percent or more of the adults 65 and over in descending order are the cities of Rickardsville, Sherill, Luxemburg, New Vienna, and Sageville. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 104 Table 3.33 Dubuque County Population 65 years and Over, Jurisdiction Total Population Population 65 yrs. and over Percent 65 yrs. and over Dubuque County 99266 17256 17.38% Asbury 5943 913 15.36% Balltown 79 15 18.99% Bankston 23 1 4.35% Bernard 114 15 13.1690 Cascade 2386 426 17.85% Centralia 116 23 19.83% Dubuque 59667 11013 18.46% Durango 20 2 10.00% Dyersville 4477 738 16.48% Epworth 2023 324 16.02% Farley 1766 251 14.21% Graf 76 12 15.79% Holy Cross 356 59 16.57% Luxemburg 245 54 22.04% New Vienna 382 84 21.99% Peosta 1908 137 7.18% Rickardsville 202 54 26.73% Sageville 95 19 20.00% Sherrill 189 43 22.75% Worthington 382 72 18.85% Zwingle 84 9 10.71% Source: www.census.gov/quickfacts/fact/table/dubuquecountyiowa/PST045222 Estimated Losses to Existing Development According to the 2022 Iowa Crop Insurance Profile Report issued by the USDA's Risk Management Agency, there were more than 22 million acres insured and gross premiums were at $1.36 million. Losses for 2022 were $265,874,131, a ratio of 20 percent. Extreme heat can also cause a strain on electricity delivery infrastructure which can be overloaded during peak use of electricity to power air conditioning during extreme heat events. Another type of infrastructure damage that can occur because of extreme heat is road damage. When asphalt is exposed to prolonged extreme heat, it can cause buckling of asphalt- paved roads, driveways, and parking lots. Future Development Dubuque County is experienced a small population decline of -0.6 percent between the U.S. Census 2020 and July 1, 2022, estimates. Therefore, estimated losses should remain similar based on development alone. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 105 Climate Change Impacts The following climate change impacts relative to Extreme Heat were included in the 2010 Climate Change Impacts on Iowa report developed by the Iowa Climate Change Impacts Committee. • Nighttime temperatures have increased more than daytime temperatures since 1970. Iowa's humidity has risen substantially, especially in summer, which now has 13 percent more atmospheric moisture than 35 years ago as indicated by a 3 - 5-degree F rise in dew - point temperature. This fuels convective thunderstorms that provide more summer precipitation. Both impacts could increase the number of extreme heat events in the planning area as well as the potential for negative impacts on people and agriculture. 3.5.6 Flash Flooding Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 3 2 4 2 2.75 Moderate Profile Hazard Description A flash flood is an event that occurs when water levels rise at an extremely fast rate because of intense rainfall over a brief period, sometimes combined with rapid snowmelt, ice jam release, frozen ground, saturated soil or impermeable surfaces. Ice jam flooding is a form of flash flooding that occurs when ice breaks up in moving waterways, and then stacks on itself where channels narrow. This creates a natural dam, often causing flooding within minutes of the dam formation. Riverine Flooding is discussed separately in Section 3.5.13 and flooding caused by dam failure is discussed in Section 3.5.2 respectively. Most flash flooding is caused by slow -moving thunderstorms or thunderstorms repeatedly moving over the same area. Flash flooding is an extremely dangerous form of flooding which can reach full peak in only a few minutes and allows little or no time for protective measures to be taken by those in its path. Flash flood waters move at very fast speeds and can move boulders, tear out trees, scour channels, destroy buildings, and obliterate bridges. Flash flooding often results in higher loss of life, both human and animal, than slower developing river and stream flooding. In some cases, flooding may not be directly attributable to a river, stream, or lake overflowing its banks. Rather, it may simply be the combination of excessive rainfall or snowmelt, saturated ground, and inadequate drainage. With no place to go, the water will find the lowest elevations — areas that are often not in a floodplain. This type of flooding, often referred to as sheet flooding, is becoming increasingly prevalent as development outstrips the ability of the drainage infrastructure to properly carry and disburse the water flow. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 106 In certain areas, aging storm sewer systems are not designed to carry the capacity currently needed to handle the increased storm runoff. Typically, the result is water backing into basements, which damages mechanical systems and can create serious public health and safety concerns. This combined with rainfall trends and rainfall extremes all demonstrate the high probability, yet generally unpredictable nature of flash flooding in the planning area. Although flash floods are somewhat unpredictable, there are factors that can point to the likelihood of flash floods occurring. Weather surveillance radar is being used to improve monitoring capabilities of intense rainfall. This, along with knowledge of the watershed characteristics, modeling techniques, monitoring, and advanced warning systems increases the warning time for flash floods. Geographic Location/Extent The topography of Dubuque County is gently sloping (5 to 9 percent) to strongly sloping (9 to 30 percent) farmland with some steep bluffs near streams. Vegetal cover is typically pastureland grass, with some timber, especially near streams. The Mississippi River flows adjacent to the east limit of the county, flowing generally in a southeasterly direction. The Mississippi River is joined by the Little Maquoketa River system flowing east some five miles north of the City of Dubuque and the Catfish Creek system also flowing east. The western and southern portions of the county are drained by the North Fork Maquoketa River and by streams draining into that river which all tend to flow in a southern direction before joining the Maquoketa River some 30 miles south of the City of Dubuque. Land use in and around the floodplain is primarily agricultural. Flash flooding occurs in those locations of the planning area that are low-lying and/or do not have adequate drainage to carry away the amount of water that falls during intense rainfall events. According to NCDC and reports from the HMPC, the following locations have a history of flash flooding events: • City of Dubuque — Bee Branch Drainage Basin - St. Mary's Catholic Church, Elm Street, and the Historic Millwork District — Downtown Dubuque, Between 20th and 28th Streets and between Washington and Jackson Streets; 17th St and Locust St — Herber and Rupp Hollow Roads — Spring Valley Mobile Home Park — Kennedy Mall and JF Kennedy Road — Rockdale Road and Cedar Cross Road — English Mill Rd and N Cascade Rd, • City of Dyersville — North Fork of the Maquoketa River — Floyd Road and 180th Street • City of Durango — Paradise Valley Road • City of Cascade Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 107 — Highway 151 between Cascade and Monticello. • City of New Vienna — New Wine Park • City of Sageville — Herber Road near John Deere Road closed due to mudslide. — Highway 52 at Rickardsville and Sageville The National Weather Service has various flash flooding products that are issued to the public to provide information regarding upcoming and current flash flood threats (see Table 3.34). Product Table 3.34 National Weather Service Flash Flooding Products What It Means Will there be any threat of flash flooding in the next several days? There is a threat of flash flooding within the next 48 hours, either as a result of heavy rain, ice jams, or the threat of a dam break. There is an immediate threat for flash flooding in the warned area, especially in low-lying and poor drainage areas. These warnings are updated frequently with Flash Flood Statements. You Should... If there is a threat of flash flooding, check back later for updated forecasts and possible watches and warnings. Latest Hazardous Weather Outlook Monitor weather conditions closely, especially if you live in an area prone to flash flooding. If you live in an area susceptible to flash flooding, be prepared to evacuate and head to higher ground. Be very cautious when driving in the warned area, especially at night or while it is still raining. You may not be able to see a flooded road until it is too late! A Flash Flood Emergency may be declared when a severe threat to human life and catastrophic damage from a flash flood is imminent or ongoing. The declaration of a Flash Flood Emergency would typically be found in either a Flash Flood Warning or Flash Flood Statement. People are strongly encouraged to avoid the geographic area of concern in a Flash Flood Emergency. The Flash Flood Emergency wording is used very rarely and is reserved for exceptionally rare and hazardous events. The threat of flash flooding is over, Areal flood warnings will typically list but there is still significant standing locations and roads impacted by the water in the affected area. flooding. Try to avoid these locations until the water has receded. Source: National Weather Service. Previous Occurrences Table 3.35 provides details regarding the flashflood and areal flood watches and warnings issued for Dubuque County and the Dubuque County forecast zone by National Weather Service. Areal flooding is a type of flash flooding that is generally over a large area usually due to the amount and duration of rainfall. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 108 Table 3.35 Flash Flood -Related National Weather Service Watches and, Warnings Issued for Dubuque County and, Dubuque County, Iowa Forecast Zone (2000 to 2022) 40 u 3 -0 O O N O O lD O N O 00 O M O O r4 V--1 r4 N r4 M r4 R* rl LA r4 W r1 1% r1 00 r1 M r1 O N r-1 N N N 41 Cu 3 O N O N O N O N O N O N O N O N O N O N O N O N O N O N O N O N O N O N O N O N O H IT a` Aerial Flood Warning 3 2 2 1 1 2 11 Watch 1 2 4 1 2 2 4 4 3 1 24 Flash Flood Warning 2 4 5 4 7 3 6 1 2 5 1 40 Watch 1 6 12 4 17 3 1 5 4 4 5 3 9 10 5 1 90 Total 2 4 5 2 12 26 10 25 5 1 8 13 5 5 5 13 14 8 1 1 165 Source: Iowa State University Department of Agronomy. As discussed in the Description Section, flash flooding can be caused by intense rainfall over a brief period. Table 3.36 provides the top 30 rainfall events at the Dubuque Lock and Dam Climate Station from 1893 to 2023. Table 3.36 Top 30 Rainfall Events, Dubuque Lock and Dam Climate Station, 1893 to 2023 Date Amount (inches) Date Amount (inches) 2011-07-28 8.8 1947-06-13 3.88 2010-07-23 7.18 1919-07-09 3.87 1972-08-02 5.27 1987-07-30 3.86 1875-09-09 4.95 2007-07-18 3.75 2002-06-04 4.86 1927-09-09 3.72 1876-07-05 4.55 1927-05-08 3.67 1978-05-13 4.5 1938-06-14 3.66 1972-09-13 4.48 1962-05-29 3.64 1918-08-16 4.26 2022-07-16 3.6 2017-07-22 4.23 1915-09-26 3.57 1967-09-14 4.04 2003-11-04 3.57 1881-09-26 4.01 1912-08-18 3.55 2002-08-22 3.98 1892-06-23 3.48 1873-08-07 3.92 j 1925-07-03 3.46 2016-06-151 3.92 2014-06-19 3.4 Source: Iowa State University Department of Agronomy. Between 1997 and 2016, there were 42 flash flood events and 30 heavy rain events. When counting only events that occurred on separate days, there were 34 events. During this timeframe, there were no injuries or deaths reported. Total property damages for these events were estimated to be $30,606,000. Table 3.37 provides a summary of the NCDC data. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 109 Table 3.37 NCDC Dubuque County, Iowa Flash Flood Events Summary, 1997-2016 Date Property Loss # Events Flash Flood 2/20/1997 $0 1 5/16/1999 $5,000,000 2 5/17/1999 $16,000,000 4 6/8/1999 $0 2 5/8/2000 $0 1 6/4/2002 $0 5 8/22/2002 $0 4 5/22/2004 $10,000 1 6/16/2004 $40,000 1 7/18/2007 $500,000 1 4/25/2008 $0 2 5/25/2008 $0 1 5/30/2008 $0 1 6/8/2008 $50,000 2 6/12/2008 $0 1 7/22/2010 $500,000 1 7/27/2011 $8,000,000 2 6/22/2013 $0 1 6/19/2014 $0 3 6/29/2014 $0 1 6/30/2014 $0 1 6/14/2016 $0 1 7/23/2016 $500,000 1 9/22/2016 $4,000 2 Total $30,604,000 42 Heavy Rain 7/5/2003 $2,000 1 6/16/2004 $0 1 6/25/2005 $0 1 8/18/2005 $0 1 4/13/2006 $0 1 6/24/2006 $0 2 4/25/2008 $0 2 7/27/2011 $0 8 7/28/2011 $0 12 8/23/2011 $0 1 Total $2,000 30 Grand Total $30,606,000 72 Source: NCDC Flash flood events with significant property loss include the following: May 16-17, 1999, Flooding: Flash flooding along the North Fork of the Maquoketa River caused extensive damage in Dyersville. Numerous businesses across town sustained major damage. The costliest damage occurred at Scale Models, which sustained an Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 110 estimated $150,000 in damage. Other businesses reported flooding to depths of 7 feet in their basements. About 100 people were evacuated from 60 homes. State officials set the preliminary damage estimates from Dyersville at $3 to $5 million. Five to six feet of water flooded city streets downtown. Major road damage resulted, including buckled roads and pavement washed away. Approximately 25 residential blocks were affected. Basements in over 60 houses were flooded with water from 2 feet deep up to the rafters. Flooding was reported between 20th and 28th Streets and between Washington and Jackson streets. State damage estimates were set at $17 million in Dubuque. • May 2004 Flooding: A low level jet developed the first of two squall lines in western Iowa that raced east across Iowa and Illinois. The first squall line travelled north of the stationary front across Iowa and Northern Illinois. The storms brought renewed heavy rain to areas that had been saturated by storms just hours earlier. New Wine County Park evacuated. • June 2004 Flooding: Scattered thunderstorms developed ahead of a cold front moving east through Iowa. By the evening, a surface low had developed along the cold front as it moved into Eastern Iowa. This enhanced the overall lift in a near tropical atmosphere and produced copious amounts of rain in a very short period. This resulted in flash flooding across parts of Northeast Iowa and Northwest Illinois due to the hilly terrain. Water over numerous roads in the north part of county; Highway 3 (formerly 52)closed at Rickardsville and Sageville. • July 2007 Flooding: Rainfall totals of 2 to 6 inches over a 7-hour period resulted in numerous flooded roads, creeks, streams, and rivers throughout Dubuque County. The following locations reported flooding during this event: Rupp Hollow Rd, W Locust St and 22nd St, 17th St and Locust St, all along Locust St, Downtown Dubuque, Highway 3 on the north side of town, Highway 3 and Clayhill Rd, 22nd St and White St, many roads north of Highway 20, English Mill Rd and N Cascade Rd, Paradise Valley Rd and Highway 3, and several areas along Highway 3 from Sageville, IA to Holy Cross, IA. It was also reported that portions of the Maquoketa River were well out of its banks and the river level was rising rapidly. • June 2008 Flooding: Heavy rain -producing showers and thunderstorms moved across eastern Iowa during the morning and early afternoon hours of June 8 producing damaging winds and flash flooding. Heavy rains caused the Little Maquoketa River to rise rapidly resulting in some flash flooding of Highway 3 near Durango, IA around 2:00 pm June 8. The highway was closed until the flood waters receded. Some Durango residences along the river were evacuated. • July 2010 Flooding: Heavy rains of 4 to 8 inches which fell in about 12 hours resulted in flash flooding of much of Dubuque County during the morning of July 23. At 1245 am CDT, about 15 inches of water was flowing in some streets in Dubuque as torrential rains continued. At 122 am CDT, the baseball field near the junction of Coffee Creek and the North Fork Maquoketa River in New Vienna was flooded with 4 feet of water. In addition, the North Fork of the Maquoketa River flooded, and flood waters started to Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 111 reach the edges of some residences in town. By 539 am CDT, Highway 3 north of Dubuque was closed due to flooding. In Dyersville, both Bear Creek and the North Fork Maquoketa River overtopped, flooding various streets around town including a 3-block section of downtown near the historic basilica. One neighborhood was surrounded by water, forcing emergency crews to stage personnel in the isolated area. About 50 homes in Dyersville were affected either by flooded basements or by loss of access. • July 2011 Flooding: Torrential downpours of rain fell across much of Dubuque County during the evening of July 27 and early morning hours of July 28 resulting in flash flooding of much of the county, especially in Dubuque, IA. Rainfall totals of 7 to 15 inches were common across the area, with most of the rain falling in under 12 hours. Numerous roads and bridges were washed out and many others closed, causing Dubuque County to run out of barricades. Several neighborhoods were evacuated, including the Valley Hill trailer park where the water was 6 feet deep. Many creeks in the area raged out of their banks, including Catfish Creek. Very early estimates of damage to infrastructure alone exceeded $3 Million. Numerous roads and streets were flooded, with some eroded or washed away completely. Among the hardest hit areas was the vicinities of St. Mary's Catholic Church, Elm Street, and the Millwork District. The Dubuque water treatment plant was heavily damaged, with estimates between $1.5 Million and $2 Million. A basement wall caved in at 1790 Chaney Road on Dubuque's West End. • July 2016 Flooding: A disturbance interacting with a frontal system produced an area of severe thunderstorms with numerous damaging winds, some flash flooding, and a few isolated, brief tornadoes. Amateur radio report received water over several roads in downtown Dubuque including Central Avenue and Jackson Streets which were closed. The US Army Corps of Engineers, Cold Regions Research and Engineering Laboratory (CRREL) maintains a database of historic ice jams. According to a query of that database from 1950 to the present, eight recorded ice jams have occurred in Dubuque County: six within the City of Dubuque; one in the City of Durango; and one in the City of New Vienna. Probability of Future Occurrence The frequency of past events is used to gauge the likelihood of future occurrences. The events from NCDC that occurred on the same day were combined to determine the total number of 34 flash flooding events in the planning area over the 24-year period from 1993 to 2016. However, with past mitigation efforts, the planning committee believes that this reduces the score to a 3 for probability. Vulnerability Vulnerability Overview Water over low-lying roads and bridges is the most frequent impacts associated with flash flooding that has occurred in the planning area. This can cause wash out of bridge abutments and erosion/scour damage on roads. There is potential for loss of life if motorists drive into moving water. However, public education campaigns have helped to educate citizens about not Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 112 driving through moving water. Building damage is generally limited to water in basements where rain is too intense for drainage systems and natural drainage to carry water away from the structure. In addition, when combined storm/sanitary sewer systems are overloaded, this can result in sewer back-up. In general, flash -flooding is short in duration and government services and business operations are not impacted. However, flash flooding within Dubuque County has caused over $30 million dollars in property damages. Potential Losses to Existing Development When roads and bridges are inundated by water, damage often occurs as the water scours materials around bridge abutments and gravel roads. The water can also cause erosion undermining roadbeds. In some instances, steep slopes that are saturated with water may cause mud or rockslides onto roadways. This damage can cause costly repairs for state, county, and city road/bridge maintenance departments. When sewer back-up occurs, this can result in costly clean-up for home and business owners as well as present a health hazard. Based on loss estimates reported by NCDC, property losses averaged $1,275,250 per year over the 24-year period from 1993 to 2016. Future Development In planning future development, jurisdictions in the planning area should avoid development in low-lying areas near rivers and streams or where interior drainage systems are not adequate to provide drainage during heavy rainfall events. Future development should also take into consideration the impact of additional impervious surfaces on water run-off and drainage capabilities during heavy rainfall events. Climate Change Impacts One of the climate change impacts noted in the 2010 Climate Change Impacts on Iowa report by the Iowa Climate Change Impacts Committee is the increase in frequency of severe precipitation events. Figure 3.15 shows that all of Iowa is in the region with a 31 % increase in very heavy precipitation from 1958 to 2007. For this study, very heavy precipitation was defined as the heaviest 1 % of all events. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 113 Figure 3.15 Increase in Very Heavy Precipitation in the U.S., 1958-2007 Percentage Change in Very Heavy Precipitation 0 - 10% 10 - 20% 20 - 30% 30 - 40% 40 - 50% >60% Source: Karl, T.R., J.M. Melillo, and T.C. Peterson(eds). 2009. Global Climate Changelmpacts in the United States. U.S. Global Climate Change Research Program. Cambridge University Press and as cited in the 2010 Climate Change Impacts on Iowa report by the Iowa Climate Change Impacts Committee If this trend increases, flash flooding events and their associated impacts will likely occur more often in the planning area. 3.5.7 Grass or Wildland Fire Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 2 1 4 1 1.90 Low Profile Hazard Description Iowa's urban/rural interface (areas where development occurs within or immediately adjacent to wildland, near fire -prone trees, brush, and/or other vegetation), is growing as metro areas expand into natural forest, prairies and agricultural areas that are in permanent vegetative cover through the Conservation Reserve Program (CRP). The State has the largest number of CRP contracts in the nation, totaling over 1.5 million acres. Most of this land is planted in cool and warm season grass plantings, tree plantings and riparian buffer strips. There is an additional 230,000 acres in federal ownership and conservation easements. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 114 Wildfires are frequently associated with lightning and drought conditions, as dry conditions make vegetation more flammable. As new development encroaches into the wildland/urban interface more and more structures and people are at risk. On occasion, ranchers and farmers intentionally set fire to vegetation to restore soil nutrients or alter the existing vegetation growth. Also, individuals in rural areas frequently burn trash, leaves and other vegetation debris. These fires have the potential to get out of control and turn into wildfires. The risk of wildfires is a real threat to landowners across the State. The National Weather Service monitors the conditions supportive of wildfires in the State daily so that wildfires can be predicted, if not prevented. The risk factors considered are: • High temperature • High wind speed • Fuel moisture (greenness of vegetation) • Low humidity • Little or no cloud cover Geographic Location/Extent Wildland/Grass fires are most likely to occur in the Wildland Urban Interface (WUI). This is the area where houses meet or intermingle with undeveloped wildland vegetation. Within the WUI, there are two specific areas identified: 1) Interface and 2) Intermix. The interface areas are those areas that abut wildland vegetation and the Intermix areas are those areas that intermingle with wildland areas. As can be seen in Figure 3.16 Dubuque County has a moderate amount of intermix areas (red) and no interface areas (yellow). Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 115 Figure 3.16 Dubuque County Wildland Urban Interface, 2023 41 A- _ .. . t * •' Y - WA Source: SILVIS Lab, Department of Forest Ecology and management, University of Wisconsin -Madison; WUI 2023. Previous Occurrences Data was requested from the Iowa Department of Public Safety, State Fire Marshal Division to provide information on previous occurrences of grass/wildland fires in the planning area. Through the National Fire Incident Reporting System (NFIRS), the Iowa State Fire Marshal's Office collects and reports fire incidents throughout the State. NFIRS is a repository of statistical data reported by participating fire departments. The State Fire Marshal's Division was unable to provide the historical grass/wildland fire data at this time. Probability of Future Occurrence Historical data was not available to document the average number of wildland/grass fires per year. The HMPC stated that field fires do occur, but the jurisdictions in the county have not Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 116 experienced large scale wildfires. Since statistical data was unavailable to determine a quantitative probability, a qualitative probability is based on the anecdotal descriptions from the HMPC. Vulnerability Overview Areas that are most vulnerable to wildfire are agricultural areas where land is burned, rural areas where trash and debris are burned, and the wildland-urban interface/intermix areas. To demonstrate how vulnerability to this hazard varies by jurisdiction, the 2023 spatial data indicating acreage of Wildland Urban Interface/Intermix areas from the SILVIS Lab, Department of Forest Ecology and Management, University of Wisconsin -Madison was compared against the corporate boundary layer for the planning area. Table 3.38 and Table 3.39 provide additional details. Table 3.38 Dubuque County Wildland/Urban Interface and Intermix Acres Jurisdiction Intermix (acres) I Interface (acres) Asbury 7 0 Bal ltown 19 0 Cascade 2 0 Dubuque 1,153 0 Epworth 9 0 Sageville 167 0 Worthington 2 0 Unincorporated 19,999 0 Total 21,358 0 Source: SILVIS Lab, Department of Forest Ecology and management, University of Wisconsin -Madison; WUI 2010 Table 3.39 Wildland Urban Intermix / Interface Acreage by WUI Class WUI Class Acres High Density Intermix 2 Medium Density Intermix 1,898 Low Density Intermix 19,459 Total 21,358 Source: SILVIS Lab, Department of Forest Ecology and management, University of Wisconsin -Madison; WUI 2020. Potential Losses to Existing Development Wildfires can be responsible for extensive damage to crops, the environment and occasionally residential or business facilities. Homes built in rural areas are more vulnerable since they are in closer proximity to land that is burned and homeowners are more likely to burn trash and debris in rural locations. The vulnerability of structures in rural areas is exacerbated due to the lack of hydrants in these areas for firefighting and the distance required for firefighting vehicles and personnel to travel to respond. Potential losses to crops and rangeland are additional concerns. Future Development Future development in the wildland-urban interface/intermix areas would increase vulnerability to this hazard. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 117 Climate Change Impact According to the 2010 Climate Change Impacts on Iowa report, by the Iowa Climate Change Impacts Committee, the annual average temperature has been increasing over the last 136 years. Figure 3.17 shows this data graphically. Figure 3.17 Annual Average of Statewide Daily Average Temperatures (° F) W� 52 W 50 €48 d d46 � as d a a 42 40 1873 1882 1891 400 1909 1918 1K7 19M IM M4 W 1972 1981 140 1999 2008 Year Source: 2010 Climate Change Impacts on Iowa report, by the Iowa Climate Change Impacts Committee, Data from the Iowa Climatology Bureau, 2010. If Iowa were to experience a severe drought, as has occurred in the past, the slow and steady rise in statewide annual mean temperature, masked in summer by moist surface conditions during non -drought years, could lead to an abrupt switch to extreme summer heat comparable to the summers of 1983 or 1988. If these conditions occur, the occurrence of wildfire would be expected to increase as was seen in 2012. 3.5.8 Hazardous Materials Incident Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 2 2 4 3 2.40 Moderate Profile Hazard Description A hazardous substance is one that may cause damage to persons, property, or the environment when released to soil, water, or air. Chemicals are manufactured and used in increasing types and quantities. Each year over 1,000 new synthetic chemicals are introduced and as many as 500,000 products pose physical or health hazards and can be defined as "hazardous chemicals". Hazardous substances are categorized as toxic, corrosive, flammable, irritant, or explosive. Hazardous material incidents generally affect a localized area. Fixed Hazardous Materials Incident A fixed hazardous materials incident is the accidental release of chemical substances or mixtures during production or handling at a fixed facility. Transportation Hazardous Materials Incident A transportation hazardous materials incident is the accidental release of chemical substances or mixtures during transport. Transportation Hazardous Materials Incidents in Dubuque County can occur during highway or air transport. Highway and rail accidents involving hazardous Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 118 materials pose a great potential for public exposures. Both nearby populations and motorists can be impacted and become exposed by accidents and releases. Barge accidents involving hazardous material pose potential for exposure through contamination of the water as well as populations near the point of release. If airplanes carrying hazardous cargo crash, or otherwise leak contaminated cargo, populations and the environment in the impacted area can become exposed. Pipeline Incident A pipeline transportation incident occurs when a break in a pipeline creates the potential for an explosion or leak of a dangerous substance (oil, gas, etc.) possibly requiring evacuation. An underground pipeline incident can be caused by environmental disruption, accidental damage, or sabotage. Incidents can range from a small, slow leak to a large rupture where an explosion is possible. Inspection and maintenance of the pipeline system along with marked gas line locations and an early warning and response procedure can lessen the risk to those near the pipelines. Geographic Location/Extent This section provides geographic locations within Dubuque County impacted by each type of potential hazardous materials incident. Fixed Hazardous Materials Incident According to the Iowa Department of Natural Resources, there are 58 sites in Dubuque County that because of the volume or toxicity of the materials on site were designated as Tier II Facilities under the Superfund Amendments and Reauthorization Act. Table 3.40 provides the number of Tier II Facilities for each jurisdiction in the planning area as well. Figure 3.18 that follows is a map showing the locations of Tier II Facilities. Table 3.40 Tier II Facilities in Dubuque County per jurisdiction Jurisdiction # of Tier II Facilities Unincorporated 12 Asbury 1 Cascade 2 Dubuque 25 Dyersville 9 Epworth 2 Farley 1 Peosta 3 Sherrill 2 Worthington 1 Total 58 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 119 Figure 3.18 Map of Tier II Facilities in Dubuque County per jurisdiction T Map compiled W2017: 0 5 10 Miles N intended for planning purposes only. I I I A {lief Data Source: Dubuque County, Iowa DNR ,vlieelr Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 120 Transportation Hazardous Materials Incident The transport of hazardous materials in Dubuque County occurs via trucks on the highways/roads and railways as well as via barge traffic on the Mississippi River and airplanes carrying hazardous cargo. Truck Transport Hazardous materials can be transported on any of the roads in Dubuque County. Numerous major US and state highways run through Dubuque County. The City of Dubuque is the major hub for the four -lane US Highway 20 that runs east west through Dubuque County extending into Iowa and Illinois. Four -lane US Highway 61 extends north south from the City of Dubuque and extends into Wisconsin on the north and to the Quad Cities and beyond to the south. Four -lane US Highway 151 extends from the City of Dubuque and into Wisconsin on the north and to Cedar Rapids and beyond to the southwest. US Highway 52 runs north -south generally following the Mississippi River and extending north from Dubuque County through Iowa into Minnesota and to the south through Bellevue and Sabula before entering Illinois. The major highways are listed below: • US Highway 20 • US Highway 52 • US Highway 61 • US Highway 151 • Iowa Highway 3 • Iowa Highway 32 • Iowa Highway 136 Numerous paved county roads connect all the incorporated cities and unincorporated towns throughout the county. Agriculture is important to the economy of Dubuque County. As a result, along with other chemicals, chemicals utilized in agriculture are frequently transported along county and local roadways. Industrial areas in Dubuque County are primarily located in three areas around the City of Dubuque. The first area is to the south along Highways 52, 151 and 61. The second is located west of the City of Dubuque along Highway 20 and extends to Peosta. The third area is along Highway 3 North in the Couler Valley and Little Maquoketa River outlet to the Mississippi River. These industrial areas have the potential for the use of hazardous chemicals. As a result, incidents may occur more frequently in these areas. Figure 3.19 illustrates the highways in Dubuque County. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 121 Figure 3.19 Dubuque County Highways Source: Iowa Department of Transportation. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 122 Rail Transport The following railroads operate in Dubuque County: Canadian Pacific Railroad (CP), Dakota, Minnesota and Eastern (DME) R.R. Company, Canadian National Railway Company. Burlington Northern Sante Fe Railroad has a line (in red) that runs down the Illinois side of the Mississippi River adjacent to Dubuque County. Figure 3.20 shows the railroads that operate in Dubuque County with the annual gross tons per mile. This demonstrates that the main CP/DME line that runs along the Dubuque County side of the Mississippi carries 20 to 24.87million tons per mile annually. Figure 3.20 Railroad Lines in Dubuque County NORTH BUENA VISTA Cp DUBUQUE DYERSVILLE JULIEN EPWORTH CC 71 �JFARLEY CN PEOSTA RGCFiDF DUBUC�UE Annual Gross Tons in Millions per Mile 0.01 - 1.9 2 - 4.9 5 - 19.9 20 - 49.9 50 & above Source: Iowa Department of Transportation. Air Freight BNSF (CC 1 r DUBUQUE f �8n�3 J BELLEVUE GP The Dubuque Regional Airport is located south of the Dubuque County (see Figure 3.21). There are also three private airports: Dyersville Area Airport, Kleis Airport (Zwingle) and Anderson Airport (near Graf). Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 123 Figure 3.21 Dubuque Regional Airport Source: Iowa Department of Transportation. Pipeline Incident Figure 3.22 provides the locations of pipelines in Dubuque County. The data for this map consists of gas transmission pipelines (blue) and hazardous liquid trunklines (red). It does not contain gathering or distribution pipelines, such as lines which deliver gas to a customer's home. Therefore, not all pipelines in the County will be visible. Figure 3.22 Pipelines in Dubuque County, Gas Transmission Pipelines (Blue) And Hazardous Liquid Trunklines (Red). Source: Pipeline and Hazardous Materials Safety Administration, National Pipeline Mapping System. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 124 Any type of hazardous materials incident within a city that includes a large release of hazardous materials could affect large areas of the city in the right conditions, possibly even the entire city. This could necessitate evacuation of large areas. In the rural unincorporated areas where population densities are low, even in the event of a large release the number of homes that may need to be evacuated would be significantly lower than in an urban environment. Immediate dangers from hazardous materials include fires and explosions. The release of some toxic gases may cause immediate death, disablement, or sickness if absorbed through the skin, injected, ingested, or inhaled. Contaminated water resources may be unsafe and unusable, depending on the amount of contaminant. Some chemicals cause painful and damaging burns if they come in direct contact with skin. Contamination of air, ground, or water may result in harm to fish, wildlife, livestock, and crops. The release of hazardous materials into the environment may cause debilitation, disease, or birth defects over a long period of time. Loss of livestock and crops may lead to economic hardships within the community. The occurrence of a hazmat incident many times shuts down transportation corridors for hours at a time while the scene is stabilized, the product is off-loaded and reloaded on a replacement container. Previous Occurrences In Iowa, hazardous materials spills are reported to the Department of Natural Resources. According to Iowa Administrative Code Chapter 131, Notification of Hazardous Conditions, any person manufacturing, storing, handling, transporting, or disposing of a hazardous substance must notify the Department of Natural Resources and the local police department or the office of the sheriff of the affected county of the occurrence of a hazardous condition as soon as possible but not later than six hours after the onset of the hazardous condition or the discovery of the hazardous condition. The Department of Natural Resources maintains a database of reported spills. According to the DNR database, from 2000 to 2016 (17 years), there have been 261 hazardous materials spills reported in Dubuque County. Table 3.41 provides a summary of the reported spills during this period for each jurisdiction indicated in the database as well as the mode of the spill. According to this data, the most spills occurred in the City of Dubuque (150) and most spills occurred during handling and storage (97) followed by transportation (92) Table 3.44 that follows summarizes the spills by material type. Petroleum is the most common material type spilled. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 125 Table 3.43. Dubuque County Hazardous Materials Spills Reported to Iowa DNR, 2000- 2023 by Jurisdiction and Mode v to Mode M `o 40 •Q G! n v 7 4J v O v .a E L L O 0 11 fC6 L O Q i •� u C C CL lid 0 .0 C d L L M Jurisdiction i = Asbury 1 2 3 6 Bankston 1 1 Bernard 1 3 1 3 8 Cascade 1 3 2 5 11 Dubuque 4 1 107 1 9 5 3 2 36 68 4 240 Durango 1 1 7 9 Dyersville 1 5 2 1 2 13 24 Epworth 2 1 12 15 Farley 6 1 2 3 1 13 Guttenberg 1 1 Holy Cross 2 2 4 Luxemburg 1 2 3 New Vienna 1 1 1 3 Peosta 9 1 2 1 4 8 25 Rickardsville 5 5 Sageville 1 1 Sherrill 1 2 1 1 5 Toddville 2 2 Worthington 3 1 2 1 3 10 Zwingle 2 1 2 2 7 Not Reported 1 7 2 1 4 2 4 21 Grand Total 5 4 151 16 12 15 6 5 52 143 5 414 Source: Iowa Department of Natural Resources. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 126 Table 3.44. Dubuque County Hazardous Materials Spills Reported to Iowa DNR, 2000- 2023 by Material Type 3 5 m m R ' o N O m Type o ° a v a v, N L d N N N O G1 y _� E O m L a a V O O o ° y0 la C1 _° t L N i N C1 O `` d ° d IL O O O C Q C U n J C O C Z L O O O Q E Q E E L- LL c ° Jurisdiction Q a a Asbury 3 1 2 6 Bankston 1 1 Bernard 1 1 2 1 1 2 8 Cascade 1 1 3 2 3 1 11 Dubuque 16 2 8 4 5 12 11 1 13 3 7 125 1 28 2 2 240 Durango 2 1 2 1 3 9 Dyersville 1 3 7 2 9 2 24 E worth 1 6 1 1 5 1 15 Farley 2 3 1 1 1 1 3 1 13 Guttenberg 1 1 Holy Cross 1 2 1 4 Luxemburg 1 1 1 3 New Vienna 1 2 3 Peosta 2 1 3 1 1 15 1 1 25 Rickardsville 1 1 1 2 5 Sa eville 1 1 Sherrill 1 1 1 1 1 5 Toddville 2 2 Worthington 3 1 5 1 10 Zwin le 1 1 1 1 3 7 Not Reported 1 2 3 2 1 12 21 Grand Total 21 5 16 6 15 45 14 15 20 3 8 196 5 37 2 6 414 Source: Iowa DNR. Pipelines The U.S. Department of Transportation (DOT) Pipeline and Hazardous Materials Safety Administration maintains a database of pipeline incidents and mileage reports. From 1996 to 2015, there were no reported pipeline incidents in Dubuque County. Probability of Future Occurrence From 2000 to 2023, there have been 414 spills reported to Iowa DNR. This computes to an annual average of more than 23 hazardous materials spills per year. However, the Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 127 number has decreased in the latter ten years, and therefore the committee lowered the Probability rating from the previous plan. Vulnerability Vulnerability Overview A hazardous materials incident can occur almost anywhere. So, all jurisdictions are considered to have at least some vulnerability to this hazard. People, pets, livestock, and vegetation in proximity to facilities producing, storing or transporting hazardous substances are at higher risk. Populations downstream, downwind, and downhill of a released substance are particularly vulnerable. Depending on the characteristics of the substance released, more people, in a larger area may be in danger from explosion, absorption, injection, ingestion, or inhalation. Most of the hazardous materials incidents that have occurred in Dubuque County are localized and are quickly contained or stabilized. Depending on the characteristic of the hazardous material or the volume of product involved, the affected area can be as small as a room in a building or as large as 5 square miles or more. Many times, additional regions outside the immediately affected area are evacuated for precautionary reasons. More widespread effects occur when the product contaminates the municipal water supply or water system such as river, lake, or aquifer. Spills can be costly to clean up due to the specialized equipment and training, and disposal sites that are necessary. Although most spills are small and within local capabilities to respond quickly, the potential exists for large spills due to the industries in the planning area. Potential Losses to Existing Development The impact of this type of disaster will likely be localized to the immediate area surrounding the incident. The initial concern will be for people, then the environment. If contamination occurs, the spiller is responsible for the cleanup actions and will work closely with responders in the local jurisdiction, the Iowa Department of Natural Resources, and the Environmental Protection Agency to ensure that cleanup is done safely and in accordance with federal and state laws. As mentioned, it is difficult to determine the potential losses to existing development because of the variable nature of a hazardous materials spill. For example, a spill of a toxic airborne chemical in a populated area could have greater potential for loss of life. By contrast a spill of a very small amount of a chemical in a remote rural area would be much less costly and possibly limited to remediation of soil. Data provided by the Iowa Department of Natural Resources did not provide information relative to costs associated with cleaning up any of the spills or of any property damage that occurred. Without data on costs of previous events, it is not possible to determine potential costs associated with future spills. To analyze critical facilities at risk in the planning area, the inventory of critical and essential facilities and infrastructure in the planning area was compiled from data layers provided by Dubuque County. The compiled inventory consisted of critical facilities was compared with the locations of Tier II Facilities to determine those critical/essential facilities/functions (other Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 128 than Tier II facilities themselves) that are within'/2 mile of Tier II fixed chemical facilities. This analysis revealed 156 critical or essential facilities within '/2 mile of fixed chemical facilities with the Tier II reporting requirement. The results are summarized in Table 3.45. Table 3.45. Critical Facilities within % Mile of Tier II Facilities Facility Type G1 N R C 41 _ > y 3 w N i ,1 R W O a. = L d N w O ? O o c O _ co O F- C 1C c7 Airport Runway / Airfield 1 1 Ambulance Service 1 1 Cell Towers 14 2 16 College / University 2 1 1 4 Community / Recreation Center 1 3 1 1 6 Convention Center 1 1 County Government Facility 1 1 1 3 County Government 1 1 Emergency Response Facility 1 1 Fire Station / EMS Station 1 1 5 1 1 1 1 1 12 Government or Military Facility 2 2 Health or Medical Facility 1 1 Hospital / Medical Center 1 1 Information or Communication Facility 1 1 2 Law Enforcement 1 1 2 Municipal Government Facility 1 2 1 1 1 1 1 8 National Guard Armory / Base 1 1 Nursing Home / Long Term Care 7 7 Outdoor Theater / Amphitheater 1 1 School 4 1 1 1 7 School: Elementary 2 5 1 1 9 School: High School 1 1 2 School: Middle School 1 1 Shelters 5 17 4 4 2 1 3 1 37 Sirens 3 1 4 4 2 1 2 1 2 2 22 State Government Facility 1 1 Transportation Facility 1 1 Wastewater Treatment Plant 1 1 Water Supply or Treatment Facility 1 1 2 Water Tower 1 1 Total 15 2 74 21 13 2 8 r4r 9 8 156 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 129 Appendix E contains the detailed results of analysis with the names of specific facilities within the buffer areas. This Appendix is redacted from the public version of this plan. To obtain access for official use, contact the Dubuque County Emergency Manager. Future Development The number and types of hazardous chemicals stored and transported through Dubuque County will likely continue to increase. Business growth along major transportation corridors could also increase the vulnerability to transportation hazardous materials spills. 3.5.9 Human Disease Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 2 2 1 4 2.05 Moderate Profile Hazard Description This hazard covers human disease incident and pandemic human disease. This includes a medical, health, or sanitation threat to the public (such as contamination, epidemics, plaques, insect infestations, and pandemics). In addition to the traditional vectors of disease, mental health related issues have become classified under the category of human disease. An incident related to human disease is defined as a medical, health or sanitation threat to the public (such as contamination, epidemics, plagues and insect infestation). There are over 60 infectious diseases that are designated notifiable at the national level. A notifiable disease is one for which regular, frequent, and timely information regarding individual cases is considered necessary for the prevention and control of the disease (Center for Disease Control and Prevention, 2011). The highest rates of infectious disease in the State of Iowa come from: Chlamydia, Gonorrhea, Salmonellosis, Cryptosporidiosis, Giardiasis, Pertussis, E-Coli, HIV and Lyme Disease. Also, on the "watch list" for health officials due to the severity of the illnesses are Ebola and Zika viruses. Recently the Covid-19 pandemic has become the most serious human disease that has faced the nation and by extension Dubuque County since the HIV/AIDS epidemic began in the 1980's. A pandemic human disease is defined as a disease that has spread around the world to many people, causing illness in a person on every continent. Examples include HIV/AIDS/Influenza/Covid 19. Vaccine Preventable Disease In the U.S., there are common infectious diseases that include polio, measles, diphtheria, pertussis, rubella, mumps, tetanus and Haemophilus influenzae type b that are now rare because of widespread use of vaccines. Routine childhood immunizations have helped protect both individuals and communities each year saving nearly $14 billion in direct medical costs and $69 billion in costs to society according to the U.S. Department of Health and Human Services, Centers for Disease Control and Prevention. Vaccine preventable diseases continue to threaten the health of Iowans when children, adolescents Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 130 and adults are un-immunized or under -immunized. Coronavirus disease (COVID-19) COVID-19 is an infectious disease caused by the SARS-VoV-2 virus. Most people infected with the virus will experience mild to moderate respiratory illness and recover without requiring special treatment. However, some will become seriously ill and require medical attention. Older people and those with underlying medical conditions like cardiovascular disease, diabetes, chronic respiratory disease, or cancer are more likely to develop serious illness. Anyone can get sick with COVID-19 and become seriously ill or die at any age. The best way to prevent and slow down transmission is to be well informed about the disease and how the virus spreads. The virus can spread from an infected person's mouth or nose in small liquid particles when they cough, sneeze, speak, sing, or breathe. These particles range from larger respiratory droplets to smaller aerosols. InfluPn7a Influenza (flu) is a viral infection of the nose, throat, bronchial tubes, and lungs. There are two main types of viruses: A and B. Each type includes many different strains, which tend to change each year. In Iowa, influenza occurs most often in the winter months. Illnesses resembling influenza may occur in the summer months, but these are usually the result of other viruses that exhibit symptoms commonly referred to as influenza -like illness or ILL Influenza is highly contagious and is easily transmitted through contact with droplets from the nose and throat of an infected person during coughing and sneezing. Typical symptoms include headache, fever, chills, cough, and body aches. Although most people are ill for only a few days some may have secondary infections, such as pneumonia, and may need to be hospitalized. Anyone can get influenza, but it is typically more serious in the elderly and people with chronic illnesses such as cancer, emphysema, or diabetes or weak immune systems. It is estimated that thousands of people die each year in the United States from flu or related complications. Pandemic Influenza A pandemic is a global disease outbreak. Pandemic flu is a human flu that causes a global outbreak, or pandemic, of serious illness. A flu pandemic occurs when a new influenza virus emerges for which people have little or no immunity, and for which there is no vaccine. This disease spreads easily person -to -person, causing serious illness, and can sweep across the country and around the world in a very short time. The Centers for Disease Control and Prevention (CDC) has been working closely with other countries and the World Health Organization to strengthen systems to detect outbreaks of influenza that might cause a pandemic and to assist with pandemic planning and preparation. During 2009 and 2010, health professionals around the globe worked to combat the H1 N1 influenza virus. This relatively mild and stable influenza virus circulated across the globe and caused one of the most robust worldwide vaccination campaigns since the 1970s. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 131 Avian Flu Health professionals continue to monitor the possibility of an avian (bird) flu pandemic associated with a highly pathogenic avian H5N1 virus. Since 2003, avian influenza has been spreading through Asia. A growing number of human H5N1 cases contracted directly from handling infected poultry have been reported in Asia, Europe, and Africa, and more than half the infected people have died. There has been no sustained human -to -human transmission of the disease, but the concern is that H5N1 will evolve into a virus capable of human -to -human transmission. An especially severe influenza pandemic could lead to high levels of illness, death, social disruption, and economic loss. Impacts could range from school and business closings to the interruption of basic services such as public transportation, health care, and the delivery of food and essential medicines. Pandemics are generally thought to be the result of novel strains of viruses. Because of the process utilized to prepare vaccines, it is impossible to have vaccine pre -prepared to combat pandemics. A portion of the human and financial cost of a pandemic is related to lag time to prepare a vaccine to prevent future spread of the novel virus. In some cases, current vaccines may have limited activity against novel strains. Foodborne Disease There are several agents that can cause illness when consumers eat contaminated food, beverages, or water. Foodborne illness (food poisoning) can also be spread person -to -person as well as from contact with animals. Table 3.46 is a list of common foodborne diseases. Table 3.46. Common Foodborne Diseases Organism Onset of Symptoms Associated Food(s) Botulism 12 - 36 hours Canned fruits and vegetables Campylobacter 2 - 5 days, range 1 - 10 days Undercooked chicken or pork, unpasteurized milk Cholera 12 - 72 hours Undercooked or raw seafood, especially oysters Cryptosporidium 7 days, range 1 - 12 days Unpasteurized beverages, contaminated food or water, person -to -person E. coli (shiga-toxin) 3 - 4 days, range 2 - 10 days Undercooked ground meats, unpasteurized milk, contaminated fruits or vegetables, person -to -person Giardia 7 - 10 days, range 3 - 25 days Contaminated water, person -to -person Hepatitis A 28 - 30 days, range 15 - 50 days Raw produce, undercooked foods, person -to -person Listeria 3 weeks, range 3 - 70 days Soft cheeses, unpasteurized milk, ready -to -eat deli meats, hot dogs, undercooked poultry, unwashed raw vegetables Norovirus 24 - 48 hours, range 10 - 50 hours Contaminated ready -to -eat food, undercooked shellfish, person -to -person Salmonella 12 - 36 hours, range 6 - 72 hours Contaminated eggs, poultry, beef, raw fruits and vegetables, unpasteurized milk or juice, cheese Shigella 1 - 3 days, range 12 - 96 hours Contaminated food or water, person -to -person Trichinosis 8 - 15 days, range 5 - 45 days Raw or undercooked pork or wild game meat Source: Iowa Department of Public Health, Center for Acute Disease Epidemiology. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 132 Geographic Location/Extent A human disease outbreak has no geographic boundaries. Because of our highly mobile society, disease can move rapidly through a school, business and across the nation within days, weeks, or months. Many of the infectious diseases that are designated as notifiable at the national level result in serious illness if not death. Some are treatable, for others only the symptoms are treatable. Previous Occurrences The World Health Organization tracks and reports on epidemics and other public health emergencies through the Global Alert and Response. There have been four acknowledged pandemics in the past century: • COVID 19 — According to USA FACTS, there have been 30,647 reported cases of Covid 19 in Dubuque County for all time, and 325 deaths, equaling 1 % of reported cases. According to the New York Times (latest update March 23, 2023), there have been 10,770 deaths from the coronavirus in Iowa, or 1 in 293 residents. Dubuque County falls far below the State average. • 2009 H1N1 Influenza —The 2009 H1N1 Pandemic Influenza caused 659 hospitalizations with lab confirmed H 1 N 1 since 9/1/09 and resulting in 41 fatalities. Typically, people who became ill were the elderly, the very young and people with chronic medical conditions and high -risk behaviors. • 1968-69 Hong Kong flu (H3N2) —This strain caused approximately 34,000 deaths in the United States and more than 700,000 deaths worldwide. It was first detected in Hong Kong in early 1968 and spread to the United States later that year. Those over age 65 were most likely to suffer fatal consequences. This virus returned in 1970 and 1972 and still circulates today. • 1957-58 Asian flu (H2N2) —This virus was quickly identified because of advances in technology, and a vaccine was produced. Infection rates were highest among school children, young adults and pregnant women. The elderly had the highest rates of death. A second wave developed in 1958. In total, there were about 70,000 deaths in the United States. Worldwide deaths were estimated between one and two million. • 1918-19 Spanish flu (H1 N1) —This flu is estimated to have sickened 20-40 percent of the world's population. Over 20 million people lost their lives. Between September 1918 and April 1919, 500,000 Americans died. The flu spread rapidly; many died within a few days of infection, others from secondary complications. The attack rate and mortality were highest among adults 20-50 years old; the reasons for this are uncertain. Other Reportable Diseases Table 3.47 shows the 11-year historical reported deaths in Dubuque County from Influenza and Pneumonia as well as Infective and Parasitic Disease. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 133 Table 3.47 Deaths by Year 2012 - 2022, Influenza and Pneumonia and Infective and Parasitic Disease, Dubuque County and State of Iowa Year Influenza/Pneumonia Deaths, Dubuque County Influenza/Pneumonia Deaths, Iowa Infective/Parasitic Disease Deaths, Dubuque County Infective/Parasitic Disease Deaths, Iowa 2022 12 494 17 601 2021 8 361 12 148 2020 Data Not Available 536 17 158 2019 12 583 19 186 2018 12 688 20 186 2017 8 567 22 554 2016 17 483 7 429 2015 12 592 1 13 1488 2014 10 549 8 448 2013 24 755 11 511 2012 23 656 11 511 Source: Iowa Department of Public Health, Bureau of Health Statistics -Vital Statistics of Iowa in Brief* = fewer than three deaths, number suppressed to protect confidentiality Table 3.48 provides the number of common reportable diseases in Dubuque County from 2013 to 2017 from the Iowa Department of Public Health, Center for Acute Epidemiology Annual Reports. Table 3.48. Iowa Common Reportable Diseases by Year in Dubuque County 2013 2014 2015 2016 2017 610 647 245 548 192 Source: Iowa Department of Public Health, Center for Acute Disease Epidemiology Annual Reports. 2010-2015. Probability of Future Occurrence For purposes of determining probability of future occurrence, the HMPC defined "occurrence" of human disease outbreak as a medical, health or sanitation threat to the public (such as contamination, epidemic, or plague). Vulnerability Overview Although infectious diseases do not respect geographic boundaries, several populations in Dubuque County are at specific risk for infectious diseases. Communicable diseases are most likely to spread quickly in institutional settings such as nursing home facilities, day care facilities, and schools. There are 7 facilities that are classified as nursing homes or long-term care. There are also over 40 school facilities in the county. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 134 Figure 3.25. 2022 County Immunization Assessment Maps (2-year-Old Coverage -top, 13- 15-year-Old Coverage -bottom), Selected Vaccination Series _-. `.]e:uula ❑irk'n Wii:r>eLxyu arrwori w.w,a.n _ sioun vrn�uLli Cherokee waodnurY ma Hawk Bu[harian Delaware' b�HW�e Monnne Car l Greene B..ne story Ma - Clinton I Hem— by R d.b.n Guthrie Oala® Polk ]eager :_ .�_.� iuk fo-e ]Ohnwn Po[uwanarnie Case Adair Madio" warren MW" MAh 6. Nenkuk a - Loui • on[9dmer� union � Clarke _uea_ Monroe ]etterson Rate of Immunization: 2 Year Old 34.1% 94.1% 2 Year Old State Summary Nurn her of Immunized Patients 27,167 Records in IRIS 38,298 Census Population 38,742 Census Population with IRIS Record 98.85°I Immunization Rate - Census Population 70.1% Immunization Rate - IRIS Population 70.91% Rate of Immunization: Adolescent 61.2% 112.9% Adolescent State Summary Number of Immunized Patients 112,273 Records in IRIS 157,568 Census Population 125,917 Census Population with IRIS Record 125.14% Immunization Rate - Census Population 89.2 % Immunization Rate - IRIS Population 7I.3 % Source: Iowa Department of Public Health, Iowa Immunization Program Annual Report 2022 County Immunization Assessment, Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 135 The magnitude of human disease outbreak was determined to be critical based on a widespread scenario. The magnitude of an infectious disease outbreak is related to the ability of the public health and medical communities to stop the spread of the disease. Most disease outbreaks that cause critical numbers of deaths are communicable in nature, meaning that they are spread from person to person. The key to reducing the critical nature of the event is to stop the spread of disease. This is generally done in three ways: (1) identification and isolation of the ill, (2) quarantine of those exposed to the illness to prevent further spread, and (3) education of the public about methods to prevent transmission. The public health and health care providers in Dubuque County routinely utilize all three methods to reduce morbidity and mortality from infectious disease. Potential Losses to Existing Development According to The Annual Impact of Seasonal Influenza in the US: Measuring Disease Burden and Costs by Molinari et al., nationally the economic burden of influenza medical costs, medical costs plus lost earnings, and the total economic burden was $10.4 billion, $26.8 billion and $87.1 billion respectively. The financial burden of healthcare -associated infections nationally has been estimated at $33 billion annually. Specific amounts for Dubuque County are not available. The pandemic predictions for Iowa from the Iowa Pandemic Influenza Annex, 2006 are that 15- 35 percent of the population may be affected with a "medium level" case scenario with no vaccine and no antiviral drugs could cause 900-2,000 deaths and 3,000-7,000 hospitalizations statewide. Also, the predictions state that if a pandemic were to occur, it is likely that it would not be a worst -case scenario. Most agricultural -related jobs could continue, and school and other congregating activities could be cancelled, resulting in less spreading of a disease outbreak. The U.S. Centers for Disease Control and Prevention (CDC) estimates 76 million people suffer foodborne illnesses each year in the United States, accounting for 325,000 hospitalizations and more than 5,000 deaths. Foodborne disease is extremely costly. Health experts estimate that the yearly cost of all foodborne diseases in this country is $5 to $6 billion in direct medical expenses and lost productivity. Infections with the bacteria Salmonella alone account for $1 billion yearly in direct and indirect medical costs. Buildings, infrastructure, and critical facilities are not vulnerable to this hazard. It affects only persons susceptible to the illness. The impacts and potential losses are largely economic and are dependent on the type, extent, and duration of the illness. Future Development As of the US Census 2023, 19.5 percent of the population is over 65 years old in Dubuque County. Those over 65 are more susceptible to health complications because of disease. Climate Change Impacts The following is an excerpt from the 2010 Climate Change Impacts on Iowa Report. Investigations of the past two decades indicate that the health effects of climate change can be serious. The World Health Organization estimated that in 2002, 2.4% of worldwide diarrhea cases, 6% of malaria cases, 7% of dengue fever cases, and 170,000 deaths (0.3% of worldwide deaths) were attributed to climate change (Beggs and Bambrick 2005, WHO 2002). A major 2010 study included a range of diseases in its Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 136 listing of potential effects of climate change, ranging from obvious illnesses such as asthma and vector -borne disease to less obvious cancer and neurological disease (Portier 2010). The report details the following as climate change contributors to negative consequences for public health in Iowa: • Extreme Precipitation Events, Rising Humidity, and Associated Disease • Illness and Death Associated with Extreme Heat and Heat Waves • Warming, Air Quality and Respiratory Problems • Pollen Production and Allergies • Diseases Transferred by Food, Water, and Insects 3.5-10 Infrastructure Failure Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 2 2 4 3 2.4 Moderate Profile Hazard Description Critical infrastructure involves several different types of facilities and systems including electric power, transportation routes, natural gas and oil pipelines, water and sewer systems, storage networks and internet/telecommunications systems. Failure of utilities or other components of the infrastructure in the planning area can seriously impact public health, functioning of communities and the economy. Disruption of any of these services could result from most of the natural, technological, and manmade hazards described in this plan. In addition to a secondary or cascading impact from another primary hazard, utilities and infrastructure can fail because of faulty equipment, lack of maintenance, degradation over time, or accidental damage such as damage to buried lines or pipes during excavation. To maintain consistency with the state plan, this hazard encompasses a variety of different types of infrastructure failure, including communications failure, energy failure, structural failure, and structural fire. Communications Failure Communications failure is the widespread breakdown or disruption of normal communication capabilities. This could include major telephone outages, internet interruption, loss of cellular telephone service, loss of local government radio facilities, long-term interruption of electronic broadcast services, or emergency 911. Law enforcement, fire, emergency medical services, public works, and emergency warning systems are just a few of the vital services which rely on communications systems to effectively protect citizens. In addition, business and industry rely heavily on various modes of communication. Mechanical failure, traffic accidents, power failure, line severance, and weather can all affect communications systems and disrupt service. Disruptions and failures can range from localized and temporary to widespread and long-term. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 137 The types of hazards and impacts to internet and telecommunications infrastructure are very similar to electric power supply. Land line phone lines often utilize the same poles as electric lines. So, when weather events such as windstorm or winter weather cause lines to break, both electricity and telephone services experience outages. With the increasing utilization of cellular phones, hazard events such as tornado that can damage cellular repeaters can cause outages. In addition, during any hazard event, internet and telecommunications systems can become overwhelmed due to the surge in call/usage volume. Energy Failure Energy failure includes interruption of service to electric, petroleum, or natural gas. Disruption of electric power supply can be a cascading impact of several other hazards. Electric power is the type of energy failure that is most often a secondary impact of other hazard events. The most common hazards analyzed in this plan that disrupt power supply are flood, tornado, windstorm, and winter weather as these hazards can cause major damage to power infrastructure. To a lesser extent, extreme temperatures, dam failure, lightning, and terrorism can disrupt power. Extreme heat can disrupt power supply when air conditioning use spikes during heat waves which can cause brownouts. Dam failure is like flood in that infrastructure can be damaged or made inaccessible by water. Lightning strikes can damage substations and transformers but are usually isolated to small areas of outage. Many forms of terrorism could impact power supply either by direct damage to infrastructure or through cyber- terrorism targeting power supply networks. Primary hazards that can impact natural gas and oil pipelines are earthquake, expansive soils, land subsidence, landslide, and terrorism. Other Utility Failure Interruption of other utilities such as water and sewer systems can have a devastating, costly impact. The primary hazards that can impact water supply systems are drought, flood, hazardous materials, and terrorism. Winter storm can also impact water supply if low temperatures cause failure/breakage of water infrastructure. The primary hazard that impacts sewer systems is flood. Structural Failure / Structure Fire The collapse (partial or total) of any structure including roads, bridges, towers, and buildings is considered a structural failure. A road, bridge, or building may collapse due to the failure of the structural components or because the structure was overloaded. Natural events such as heavy snow may also cause the roof of a building to collapse (under the weight of snow). In 1983 a KWWL television tower collapsed due to ice buildup. Heavy rains and flooding can undercut and washout a road or bridge. This occurred twice in 2008 when railway bridges failed in Waterloo and Cedar Rapids due to flooding. The age of the structure is sometimes independent of the cause of the failure. Enforcement of building codes can better guarantee that structures are designed to hold-up under normal conditions. Routine inspection of older structures may alert inspectors to weak points. The level of damage and severity of the failure is dependent on factors such as the size of the building or bridge, the number of occupants of the building, the Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 138 time of day, day of week, amount of traffic on the road or bridge, and the type, and amount of products stored in the structure. There have been structural failures across the state in the past as mentioned above. They have included homes, commercial structures, and communications towers. There is no central collection point for this information, but news articles document infrastructure failure. A structural fire is an uncontrolled fire in a populated area that threatens life and property and is beyond normal day-to-day response capability. Structural fires present a far greater threat to life and property and the potential for much larger economic losses. Modern fire codes and fire suppression requirements in new construction and building renovations, coupled with improved fire -fighting equipment, training, and techniques lessen the chance and impact of a major urban fire. Most structural fires occur in residential structures, but the occurrence of a fire in a commercial or industrial facility could affect more people and pose a greater threat to those near the fire or fighting the fire because of the volume or type of the material involved. Less severe structural fires are almost a common occurrence in some communities. Geographic Location/Extent The entire planning area is at risk to all types of infrastructure failure included in the hazard description section, either from primary failure due to malfunction, degradation, or accidental or intentional damage or because of a secondary impact related to another hazard event. Communications Figure 3.26 shows the Iowa Communications Network (ICN) that administers Iowa's statewide fiber optic network. Figure 3.26. Map of Iowa Communication Network Source: Iowa Communications Network. Note: Orange box outlines Dubuque County. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 139 Power outages can occur in outlying areas with more frequency than in more developed areas. A loss of electric power can also interrupt the supply of water from a well. Food in freezers or refrigerators may also be lost. Power outages can cause problems with computers and other devices as well. Figure 3.27 is the electrical service area map for Dubuque County. Figure 3.27. Electrical Service Areas in Dubuque County ➢ye�viUe DubugLie . I •;�:aru� Source: Iowa Department of Transportation. Other Utilities Electrical Service Boundaries Amena Society Interstate Power and Light Company I MidAmercan Energy bIll Municipal L) REC h, others i Water There are 42 Water Supply Systems in Dubuque County, Iowa (see Table 3.49). Table 3.49. Water Supply Systems in Dubuque County, Iowa Dubuque Water Works Dubuque (Serves 57,686 people) Dyersville Municipal Water Co Dyersville (Serves 4,035 people) Asbury Municipal Water System Asbury (Serves 2,550 people) Cascade Municipal Water Supply Cascade (Serves 1,958 people) Epworth Water Supply Epworth (Serves 1,602 people) Farley Water Supply Farley (Serves 1,334 people) Peosta Water Supply Peosta (Serves 1,052 people) Table Mound Park Dubuque (Serves 600 people) New Vienna Water Supply New Vienna (Serves 400 people) Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 140 Burds Green Acres Subdivision Peosta (Serves 385 people) Worthington Water Supply Worthington (Serves 381 people) Holy Cross Water Supply Holy Cross (Serves 339 people) Barrington Lakes Water Commission Dubuque (Serves 333 people) Super 20 Mobile Home Park Dubuque (Serves 312 people) Thunder Hills Home & Utility Assoc. Peosta (Serves 300 people) Luxemburg Water Supply Luxemburg (Serves 246 people) Twin Ridge Corp Dubuque (Serves 174 people) Hickory Acres Dubuque (Serves 139 people) Verde Investments - Spring Valley Park Bellevue (Serves 135 people) Vernon Water Co(Serves 125 people) Corporation Of New Melleray Dubuque (Serves 108 people) Bernard Water System Bernard (Serves 97 people) Lost Canyon Mhp (Peosta)Peosta (Serves 97 people) Knapp Mobile Home Court No 4 Dubuque (Serves 87 people) Broadview Trailer Court Dubuque (Serves 82 people) North End Mobile Home Park Dubuque (Serves 78 people) Granada Mobile Home Park Dubuque (Serves 75 people) Valley Hill Court, Inc. Dubuque (Serves 72 people) Quality Water, Inc. #2 (W) Dubuque (Serves 70 people) Lore Mobile Home Park Dubuque (Serves 68 people) Twin T Mobile Home Park, Inc. Dubuque (Serves 67 people) Lore Oaks Homeowners Assn. Dubuque (Serves 61 people) Briarwood Estates Peosta (Serves 60 people) Ace Mobile Home Park Dubuque (Serves 60 people) Cedar Hills Apartments Dubuque (Serves 52 people) Wild Flower Ridge Subdivision (Serves 50 people) Green Brier Subdivision Dubuque (Serves 47 people) Regency West Subdivision Dubuque (Serves 46 people) Star Water (Serves 42 people) Country Hills Water Corp Centralia (Serves 38 people) Shagbark Estates Dubuque (Serves 38 people) Thunder Ridge Estates Peosta (Serves 36 people) Source: N Y X . Sewer There are 59 permitted wastewater treatment discharge sites in Dubuque County, Iowa according to the Department of Natural Resources (see Table 3.50). Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 141 Table 3.50. Permitted Wastewater Sites in Dubuque County Facility Name Facility City Permit Type Class Treatment Type 1840, LLC Dubuque Industrial Minor No Treatment A.Y. McDonald Mfg. Co. Dubuque Industrial Minor No Treatment Albrecht Acres Campground-STP Sherrill Semi- Public Minor Septic Tank Sand Filter Alliant Energy Data Center Dubuque Industrial Minor No Treatment Arctic Glacier Premium Ice Dubuque Industrial Minor Other Asbury City of STP Asbury Municipal Minor Oxidation Ditch Asbury, City of Ms4 Asbury Stormwater Minor No Treatment Audubon Elementary School Dubuque Industrial Minor No Treatment Balltown, City of -North WWTF Sherrill Municipal Minor Septic Tank Sand Filter Balltown, City of -South WWTF Sherrill Municipal Minor Septic Tank Sand Filter Bankston City of STP Bankston Municipal Minor Septic Tank Sand Filter Bernard, City of-STP Bernard Municipal Minor Waste Stabilization Lagoon Bp Products Dubuque Terminal Peosta Industrial Minor Other Crescent Community Health Center Dubuque Industrial Minor No Treatment Dubuque City of STP Dubuque Municipal Major Activated Sludge Dubuque County Courthouse Dubuque Industrial Minor No Treatment Dubuque County Sheriff office Dubuque Industrial Minor No Treatment Dubuque Regional Airport Dubuque Semi- Public Minor Aerated Lagoon Dubuque Residential Facility Dubuque Industrial Minor No Treatment Dubuque, City of Ms4 Dubuque Stormwater Minor No Treatment Dyersville City of STP Dyersville Municipal Minor Activated Sludge Edwards Cast Stone Company Dubuque Industrial Minor Other Epworth City of STP Epworth Municipal Minor Activated Sludge Farley City of STP Farley Municipal Minor Activated Sludge Granada Gardens Mobile Home Park Dubuque Semi- Public Minor Aerated Lagoon Grand River Center Dubuque Industrial Minor No Treatment Hickory Acres Subdivision Dubuque Semi- Public Minor Activated Sludge Holy Cross City of STP Holy Cross Municipal Minor Waste Stabilization Lagoon Ice Harbor Center Dubuque Industrial Minor No Treatment Interstate Building Dubuque Industrial Minor No Treatment Dubuque Generating Station Dubuque Industrial Minor No Treatment John Deere Dubuque Works Dubuque Industrial Major Activated Sludge Key City Plating Dubuque Industrial Minor No Treatment Knapp Mobile Home Park-STP Dubuque Semi- Public Minor Trickling Filter Loras College Dubuque Industrial Minor No Treatment Lore Mobile Home Park STP Dubuque Semi- Public Minor Waste Stabilization Lagoon Lost Canyon Mobile Home Park Peosta Semi- Public Minor Trickling Filter Luxemburg, City of-STP Luxemburg Municipal Minor Waste Stabilization Lagoon Magellan Pipeline Company, LLC Dubuque Industrial Minor Other Miracle Car Wash Dubuque Industrial Minor No Treatment Mystique Casino Dubuque Industrial Minor No Treatment Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 142 Facility Name Facility City Permit Class Treatment Type Type National Mississippi River Museum and Dubuque Industrial Minor No Treatment Aquarium New Vienna City of STP New Vienna Municipal Minor Aerated Lagoon Northend Mobile Home Park Dubuque Semi- Minor Trickling Filter Public Peosta, City of STP Peosta Municipal Minor Waste Stabilization Lagoon Prescott Elementary School Dubuque Industrial Minor No Treatment Rickardsville City of STP Rickardsville Municipal Minor Waste Stabilization Lagoon Rousselot, Inc. Dubuque Industrial Minor No Treatment Sageville School STP Dubuque Semi- Minor Waste Stabilization Public Lagoon Sherrill City of STP (East) Sherrill Municipal Minor Waste Stabilization Lagoon Spring Valley Mobile Park Bellevue Semi- Minor Trickling Filter Public Sundown Ski Area Dubuque Semi- Minor Waste Stabilization Public Lagoon Super 20 Mobile Home Park Dubuque Semi- Minor Activated Sludge Public Table Mound #1 Mobile Home Park Dubuque Semi- Minor Activated Sludge Public The Grand Opera House Dubuque Industrial Minor Other Twin Ridge Subdivision Dubuque Semi- Minor Waste Stabilization Public Lagoon U.S. Army Reserve Center STP Dubuque Semi- Minor Waste Stabilization Public Lagoon Western Dubuque Biodiesel, LLC Farley Industrial Minor No Treatment Worthington City of STP Worthington Municipal Minor Activated Sludge Source: Iowa Department of Natural Resources. I nfrastructu re/Structures The Highway map for Dubuque County is provided in Figure 3.21 in the Hazardous Materials Incident Section. The detailed Highway and Transportation Map that includes other transportation infrastructure in the county is provided in Figure 3.28. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 143 Figure 3.28. Dubuque County Transportation Map Source: Iowa Department of Transportation. There are a total of 333 bridge structures in the County as follows: • 84 State-owned Bridges. • 217 county -owned bridges • 32 city -owned bridges Previous Occurrences As indicated in the Hazard Description Section, Infrastructure Failure often occurs as a secondary impact to other hazard events. For specific descriptions, please see the Previous Occurrences section of the other hazards included in this plan. In addition to failure/impacts because of other hazard events, Infrastructure Failure can also occur because of lack of maintenance, human error, and age deterioration. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 144 The structural fires that have occurred in Dubuque County have been within the normal day -to- day response capability, including use of pre -arranged mutual aid and do not fall into the category of uncontrolled fires in a populated area that threatens life and property. Probability of Future Occurrences As discussed in other hazard sections in this plan, infrastructure failure occurs as a secondary or cascading impact from several primary hazards such as winter storm, wind storm, and tornado as well as lack of maintenance and age deterioration and other human -caused incidents such as human error, and various forms of terrorism. Structure fire events also occur annually. Vulnerability Vulnerability Overview Iowa is almost entirely dependent on out-of-state resources for energy. Iowans purchase oil, coal, and natural gas from outside sources. As a result, world and regional fuel disruptions are felt in Iowa. Every community in the planning area is at risk of some type of utility/infrastructure failure. Business and industry in the urban areas are reliant on electricity to power servers, computers, automated systems, etc. Rural areas of the County are vulnerable as well, as modern agricultural practices are reliant on energy, such as electric milking machines and irrigation pivots. Generally, smaller utility suppliers such as small electrical suppliers have limited resources for mitigation. This could mean greater vulnerability in the event of a major, widespread disaster, such as a major flood, severe winter storm or ice storm. The municipal utilities that exist in the County purchase power on the wholesale market for resale to their customers. This may make them more vulnerable to regional shortages of power as well. In the event of a large-scale event impacting water supply or wastewater treatment homes and businesses with well -supplied water and septic systems for waste treatment would be largely unaffected. However, these systems may be prone to individual failure and do not have back- up systems in place in the event of failure as larger systems might. The Iowa Department of Transportation has conducted inspections of bridges in the state. Table 3.51 provides a summary of the condition of the 333 bridges in Dubuque County. Table 3.5.1 Dubuque County Bridge Condition, SDFO Ratings, Weight Restrictions Condition Index Rating - State Owned Bridges Good Fair Poor 58 31 0 Condition Index Rating - County Owned Bridges Good Fair Poor 103 87 27 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 145 Condition Index Rating - City Owned Bridges Good Fair Poor 19 19 1 Condition Index Rating - All Bridges in Dubuque County Good Fair Poor 180 137 28 Structurally Deficient/ Functionally Obsolete (SDFO) Rating - AII Bridges in Dubuque County Not Deficient Structurally Deficient Functionally Obsolete 317 28 0 Weight Restrictions - All Bridges in Dubuque County Unrestricted Restricted Closed 309 32 4 Source: Iowa Department of Transportation. Potential Losses to Existing Development Since utility/infrastructure failure is generally a secondary or cascading impact of other hazards, it is not possible to quantify estimated potential losses specific to this hazard due to the variables associated with affected population, duration of outages, etc. Although the variables make it difficult to estimate specific future losses, FEMA has developed standard loss of use estimates in conjunction with their Benefit -Cost Analysis methodologies to estimate the cost of lost utilities on a per -person, per -use basis (See Table 3.52). Table 3.52. FEMA Standard Values for Loss of Service for Utilities and Roads/Bridges Loss of Electric Power Cost of Complete Loss of Service Total Economic Impact $126 per person per day Loss of Potable Water Service Cost of Complete Loss of Service Total Economic Impact $93 per person per day Loss of Wastewater Service Cost of Complete Loss of Service Total Economic Impact $41 per person per day Loss of Road/Bridge Service Cost of Complete Loss of Service Vehicle Delay Detour Time $38.15 per vehicle per hour Vehicle Delay Mileage $0.55 per mile (or current federal mileage rate) Source: FEMA BCA Reference Guide, June 2009, Appendix C Future Development Increases in development and population growth would increase the demand for utilities and use of infrastructure as well as the level of impacts when the utilities or infrastructure fail. Dubuque County has seen an overall population decrease of about 2.4 percent in the last five years. As technological advances are made and systems become more and more automated and dependent on power and communications infrastructure, the impacts of infrastructure failure could increase even though population is decreasing slightly. Climate Change Impacts Please refer to the Climate Change Impacts sections of the following primary hazards that can cause a cascading or secondary impact of infrastructure failure: River Flood, Severe Winter Storm, Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 146 Tornado/Windstorm, Thunderstorm/Lightning Hail, Extreme Heat, Flash Flood and Terrorism. 3.5.11 Landslide Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 1 1 4 1 1.45 Low Profile Hazard Description A landslide is the downhill movement of masses of soil and rock by gravity. The basic ingredients for landslides are gravity, susceptible soil or rock, sloping ground, and water. Landslides occur when susceptible rock, earth, or debris moves down a slope under the force of gravity and water. Landslides may be very small or very large and can move at slow to very high speeds. A natural phenomenon, small scale landslides have been occurring in slide -prone areas of Iowa long before human occupation. New landslides can occur because of rainstorms, fires, earthquakes, and various human activities that modify slope and drainage. Geographic Location/Extent Dubuque County, including the City of Dubuque, is located on the bluff lands of the Mississippi River Valley, which falls into the area for potential landslides. The planning committee noted landslides in the County in the areas of: Park Hollow, Heritage Trail and Highway 52. The events are infrequent and are not considered to be of significant concern. However, as development continues to occur on the high bluffs surrounding the banks of the Mississippi River and other areas where high embankments exist within the city limits, the city continues to witness occasional landslide events at various locations around the city. The City has an active inspection program which monitors construction activities and associated erosion control measures on a quarterly basis and after heavy rainfall events. A part of these activities includes the inspector being cognizant of possible landslides due to construction or other activities in the area. Another area of concern for the City of Dubuque is retaining walls. Development of the City of Dubuque has included many retaining walls over the years. Many of the walls are on private property either along the street right-of-way line or between lots. Some retaining walls have been constructed along the right-of-way to allow for the construction of the street. Surface runoff and subsurface water occasionally cause movement in the wall or stones to be displaced. The City relies on maintenance workers and the public to keep abreast of any changes in the structural stability of the walls. When notification of minor movement in the wall is received, after examination, City Engineering may set up control points to monitor the movement. If the wall is an immediate hazard, the area of influence will be barricaded off to protect the public. The wall will then be examined for corrective action or reconstruction. Since there are several retaining walls that are considered public, the City has an annual Capital Improvement Project budget for such repairs or reconstruction. The map in Figure 3.29 depicts landslide susceptibility and incidents rates in Iowa according to the Iowa Department of Natural Resources. This shows that Dubuque County has low moderate Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 147 susceptibility and incident rates. Figure 3.29. Landslide Susceptibility and Incident Rates Y .. ,• \'. �--'lam '- ..... !"y� \ � r 40r 51. DavenprYrt�` . * 4es Mnines �"J Lon LANDSLIDE KNOUENCE 790% High iMare Ih-m 15% of area in —Ned I Moderate 115 A-1.5% of area involved) Low [Less IIlan 1.5% of area involved) LANDSLIDE SUSCEPTIBILITY High \7nrteratC SJSCelltlhl l ity nql indicalerf where sane as of laver Than incidence � Land>lide of spot+al imeresl. Number refers to publicalions lisped on reverse 57 Ilal is number show 17 in upper right -hares[ [or ner or d State indicales a i;enefal reference for thal Stale Southern limit ❑i pleislvicene continental Burial deposals --Data kir area east of the juncture o l the M ilk River and U.S.-Canada boundary from King and belkma M. 1974. Data for area west DI Ih is polnl acorn Nalional Rew.ixch Council, 1945; Crandell, ❑. R_. 1965. modified by data from Wai tt, Richard, written commun icalion, 1976: and Colton and others, 19&1. (See references al end of lext) —8— Isohye[s showing 8 or 10 inches of mean annual precipiration [Hachures indicate low side of linel From "Climales of the S1a(N 1es" ational Oceanic and Atmospheric Administration, 1974) Source: U.S. Geological Survey. Approximate location of Dubuque County is the purple rectangle. Both the Unincorporated County and the City of Dubuque noted that landslides have occurred. There is no specific record of landslide incidents and these jurisdictions reported that they occur Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 148 infrequently. Probability of Future Occurrence The HMPC determined the probability of future occurrence of landslide in the planning area to be low. Vulnerability Vulnerability Overview There will continue to be intense rainfall events that may cause landslides in the planning area. But the damages are relatively minimal and not widespread. Potential Losses to Existing Development Due to the lack of information regarding previous occurrences of this hazard, it is not possible to estimate potential losses. Future Development Future development down slope from areas prone to landslide will increase vulnerability to this hazard. Climate Change Impacts One of the climate change impacts noted in the 2010 Climate Change Impacts on Iowa report by the Iowa Climate Change Impacts Committee is the increase in frequency of severe precipitation events. See the "Climate Change Impacts" discussion in the Flash Flood Hazard Section (3.5.6) 3.5.12 Radiological Incident Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 1 1 4 4 1.75 Low Profile Hazard Description A radiological incident is an occurrence resulting in the release of radiological material at a fixed facility (such as power plants, hospitals, laboratories, etc.) or in transit. Radiological incidents related to transportation are described as an incident resulting in a release of radioactive material during transportation. Transportation of radioactive materials through Iowa over the interstate highway system is considered a radiological hazard. The transportation of radioactive material by any means of transport is licensed and regulated by the federal government. As a rule, there are two categories of radioactive materials that are shipped over the interstate highways: Low level waste consists of primarily of materials that have been contaminated by low level radioactive substances but pose no serious threat except through long-term exposure. These materials are shipped in sealed drums within placarded trailers. The danger to the public is Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 149 no more than a wide array of other hazardous materials. 2. High level waste, usually in the form of spent fuel from nuclear power plants, is transported in specially constructed casks that are built to withstand a direct hit from a locomotive. Geographic Location/Extent Fixed Facilities An incident resulting in a release of radiological material at a fixed facility is a fixed radiological incident. There is one nuclear power plant located within Iowa: the Duane Arnold Energy Center near Palo in Linn County. There are three additional nuclear facilities in adjacent states with planning buffer zones that cross into Iowa: Ft. Calhoun Nuclear Power Plant north of Omaha, Nebraska, Cooper Nuclear Power Plant south of Nebraska City, Nebraska, and Quad Cities Nuclear Power Plant in Cordova, Illinois. The southeast corner of Dubuque County is in the 50-mile planning buffer of the Quad Cities Nuclear Power Plant and the western side of Dubuque County is in the 50- mile planning buffer of the Duane Arnold Energy Center (see Figure 3.30) Figure 3.30. Map of Nuclear Power Plants Impacting Iowa Source: Iowa Homeland Security and Emergency Management; red rectangle is approximate boundary of Dubuque County. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 150 Transportation Radiological Incidents There is also potential for the transport of radioactive waste within Dubuque County. Previous Occurrences The U.S. Nuclear Regulatory Commission has emergency classifications divided into four categories. Each level has a certain response requirement from the plant and government. The following are the emergency classifications from least to most severe: • Unusual Event • Alert • Site Area Emergency • General Emergency According to the Iowa State Hazard Mitigation Plan, 2013, there have been no occurrences of a radiological transportation incident in Iowa since 1990. Probability of Future Occurrence The Nuclear Regulatory Commission (NRC) regulates commercial nuclear power plants and other uses of nuclear materials through licensing, inspection, and enforcement of requirements. Within the NRC, several Offices and Divisions have various responsibilities to ensure nuclear power plant safety. The Office of Nuclear Reactor Regulation is responsible for accomplishing key components of the NRC's nuclear reactor safety mission. As such, NRR conducts a broad range of regulatory activities in the four primary program areas of rulemaking, licensing, oversight and incident response for commercial nuclear power reactors, and test and research reactors to protect the public health, safety and the environment. NRR works with the regions and other offices to accomplish its mission and contribute to the agency mission. Additionally, the Radiological Emergency Preparedness (REP) Program within FEMA coordinates the national effort to provide state, local and tribal governments with relevant and executable planning, training, and exercise guidance and policies necessary to ensure that adequate capabilities exist to prevent, protect against, mitigate the effects of, respond to, and recover from incidents involving commercial nuclear power plants. Dubuque County Emergency Management works closely with the REP program to ensure preparedness for any incidents involving the nuclear power plants. Considering the regulatory and preparedness programs in place and based on the lack of any Site Area or General Emergency previous occurrences for this hazard, the probability of future occurrences of radiological incidents is "Unlikely". Vulnerability Vulnerability Overview In general, danger to the public in the planning area is less than a wide array of other hazardous materials. Those working with or near sources of radiation are at a greater risk than the general Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 151 citizens in the planning area. Those responding to a radiological incident should be trained in recognizing a radiological incident and minimize exposure to radioactive materials. Although the probability of occurrence is low, if a release of radiation from the nuclear power plants did occur, this could have serious consequences in Dubuque County. Even if health impacts were not evident, the number of worried well could flood available healthcare facilities. Potential Losses to Existing Development Responding to the effects of a radiological incident in the planning area would be extensive and would require resources and assistance from several state and federal agencies to determine and evaluate the threat to life and the environment. Due to the variable nature of this hazard, it is not possible to quantify potential losses. Future Development Increased development in the planning buffer zones and along transportation corridors would increase the number of people vulnerable to this hazard in the planning area. Climate Change Impacts Drought can impact water levels for intake pipes that carry water from the Mississippi River to cool the reactor. See Section 3.5.3 for discussion of Climate Change Impacts for Drought. 3.5.13 River Flooding Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 3 1 1 4 2.20 Moderate Profile Hazard Description Many of the communities were settled and developed largely because of their proximity to water resources. A flood is partial or complete inundation of normally dry land areas. Heavy precipitation can cause flooding either in the region of precipitation or in areas downstream. Heavy accumulations of ice or snow can also cause flooding during the melting stage. These events are complicated by the freeze/thaw cycles characterized by moisture thawing during the day and freezing at night. There are two main types of flooding in the planning area: riverine flooding and flash flooding which includes ice jam flooding. Flash flooding is discussed separately in Section 3.5.6. A specific type of flash flooding can occur because of dam failure or levee failure. Flooding caused by dam or levee failure is discussed in Section 3.5.2 Riverine flooding is defined as the overflow of rivers, streams, drains and lakes due to excessive rainfall, rapid snowmelt, or ice melt. The areas adjacent to rivers and stream banks that carry excess floodwater during rapid runoff are called floodplains. A floodplain is defined as the lowland and relatively flat area adjoining a river or stream. The terms "base flood" and 100- year flood" refer to the area in the floodplain that is subject to a one percent or greater chance of flooding in any given year. Floodplains are part of a larger entity called a basin, which is defined as all the land drained by a river and its branches. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 152 Gauges along streams and rain gauges throughout the state provide for an early flood warning system. River flooding usually develops over the course of several hours or even days depending on the basin characteristics and the position of the reach of the stream. The National Weather Service provides flood forecasts for Iowa. Flood warnings are issued over emergency radio and television messages as well as the NOAA Weather Radio. People in the paths of river floods may have time to take appropriate actions to limit harm to themselves and their property. Geographic Location/Extent The Mississippi River provides the eastern boundary for Dubuque County. Other major rivers in the county include Catfish Creek, South Fork, Middle Fork, North Fork Catfish Creeks, and the Little Maquoketa river. Numerous small creeks, branches of rivers, and streams also flow through the County. Flooding from these rivers and their tributaries has been a significant problem for several of the communities in Dubuque County. There are four HUC-8 watersheds in Dubuque County (see Figure 3.31): • Grant -Little Maquoketa, 0706003 • Turkey, 0706004 • Apple -Plum, 07060005 • Maquoketa, 07060006 Dubuque County Major Watersheds Map Figure 3.31 07060004 07060003 Dubuque 0 70 600 06"`0'7060005 Source: EPA Surf Your Watershed Website. For purposes of this hazard profile and vulnerability analysis, the geographic location/extent for river flooding will be considered as those areas at risk to the 100-year flood (also known as the 1-percent annual chance flood). The 1-percent annual chance flood has been adopted by FEMA as the base flood for floodplain management purposes. Jurisdictional Flood Hazard Maps FEMA has identified Special Flood Hazard Areas in the unincorporated county and all incorporated jurisdictions except for: Balltown, Bankston, Centralia, Holy Cross, and Sherrill. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 153 Figure 3.32 provides the 1-percent annual chance floodplain for all jurisdictions in the planning area according to the effective FEMA Flood Insurance Rate Map. The county -level map is provided first, and the remaining maps are provided in alphabetical order by the city. The School District maps are provided after the city maps. Appendix E provides locations of available critical facilities in relation to the 1-percent annual chance floodplain. This will be discussed in greater detail in the vulnerability section. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 154 Figure 3.32. Dubuque County 1-Percent Annual Chance Floodplain (100-Year Floodplain) Dubuque County Flood Hazard Areas Data Sources: Dubuque County G1S, FENA A Map Prepared by MA, 2023 0 5 10 Miles I I 1 I I A.+ I - Iowa DNR, Esri, HERE, Garmin, USGS, EPA, NPS, Esri, HERE, NPS Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 155 Figure 3.33. City of Asbury 1-Percent Annual Chance Floodplain (100 Year Floodplain) City of Asbury Flood Hazard Areas AData Sources' Dubuque County GIS, FEMA Map Prepared by EC1A, 2023 0 0.5 1 Miles Iowa DNR, Esri HERE, Garmin, INCREMENT P, .; U�GS, METI/NASA, EPA, USDA,, Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 156 Figure 3.34. CRY of Balltown 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Ba I ltown Flood Hazard Map Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 157 Fiaure 3.35. Citv of Bankston 1-Percent Annual Chance Floodnlain (100-Year Floodolain) City of Bankston Flood Hazard Map - f Olde Soho 01 Ln 1% r Data Sources: Dubuque County CIS, FEMA II Map Prepared by ECIA, 2023 0 0.25 0.5 MILe 'pa Seyw Lff Ln L7 J Legend © City Boundaries I% Annual Chance Rood Hazard 0.2°% Annual Chance Floor[ Hazard lawa DNR, Esri Canada, Esri, HERE, Garmin, INCREMENT P, USGS, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 158 Figure 3.36. Citv of Bernard 1-Percent Annual Chance Flood plain (100-Year Flood plain) City of Bernard Flood Hazard Map It i i I m and 053 H1gUimport Rd Data Sources: Dubuque County GIS, FEMA A Map Prepared by ECIA, 2023 0 0,25 0-5 Miles Hggunsport Rd q� �b C m " Legend Q Clry Boundaries 1% Annual Chance Flood Hazard 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HERE, Garmin, INCREMENT R USGS, METI/NA9A,1l3A; �1SDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 159 Figure 3.37. Citv of Cascade 1-Percent Annual Chance Floodnlain (100-Year Floodolain) City of cascade Flood Hazard Areas s� Hkx Ru ` t SE • '•11i =:r�' : •E DuSuoUE Z% Farm Creep w AData Sources: Dubuque County GTS, FEMA — Map Prepared by ECIA, 2023 i 0 0.5 1 Miles l 1 I I W J. k:j. 5y � Is o Fd {F61 Legend r� Dhry�y'J6 City Boundaries 1% Annual Chance Flood Hazard Regulatory Floodway 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HERE, rmin, INCREMENT P, USGS, M 1/NASA, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 160 Fiqure 3.38. Citv of Centralia 1-Percent Annual Chance FloodDlain (100-Year FloodDlain) City of Centralia Flood Hazard Map % Data Sources: Dubuque County 615, FEMA AMap Prepared by EC1A, 2023 0 0.25 0.5 Miles I-ara V, F17d R old Legend Q City Boundaries 10I6 Annual Chance Flood Hazard 0.2% Annual Chang Flood Hazard Iowa DNR, Esri Canada, Esri, H%RE, Garmin, INCREMENT P, 1ISG5, INIET111911SA. EPI+.. USDA o c Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 161 Fiqure 3.39. Citv of Dubuaue 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Dubuque Flood Hazard Areas I t.I I t� Lora': College b DubuquF AAA Fist Dubuque J!' f. Lac o rm rC' r _ �� l ? G011Cluh r •4W A . sWJO Valley Nature Preserve Dutwq- %gional Anpol l tt,, 1. Iowa DNR, Esri �h e Legend IO City Boundaries 1% Annual Chance Flood Hazard Regulatory Floodway 0.2% Annual Chance Flood Hazard Area with Reduced Risk Due to Levee a, Esri, HERE, Garmin, U5G5, NGA, EPA, USDA, NP5 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 162 Fiqure 3.40. Citv of Duranqo 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Durango Flood Hazard Map Data Sources: Dubuque County 6I5, FEMA s AMap Prepared by KIA, 2023 0 0.25 0.5 Miles Legend `] City Boundaries 1% Annual Chance Flood Hazard Regulatory Floodway 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HERE, Garmin, INCREMENT P, USGS, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 163 Figure 3.41. Citv of Dversville 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Dyersville Flood Hazard Areas '3hway en r-. �g <d a' s I m wl aI Vie I 31 wl� In m { In � 11Wd Rd I� � I ` I II` � gs Data Sources: Dubuque County GiS, FEMA AMap Prepared by EC]A, 2023 n 1 2 Mlles I I I I I I Legend Q City Boundaries 1% Annual Chance Flood Hazard Regulatory Floodway 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canad4Esri, HERE, Garm in, INCREMENT P, USGS, METI/NASA,fPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 164 Figure 3.42. City of Epworth 1-Percent Annual Chance Floodplain (100 Year Floodplain) City of Epworth Flood Hazard Map r I Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 165 Figure 3.43. City of Farley 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Farley Flood Hazard Map Itlh Ave NW Y Sth Ave NW Ti Z 71h Ave Pll U! I., Ra�ivaa �'mu�R slhp've mW 3 F 6lri Ave NE 5th Ave NW m 5th Ave NE 411, Z Y Ave NW E qth Ave NE w _ 3rd Ave NW t_ 1 i �Y c 2rd Ave NW a x — 3rd Ave NE . Farley tsr Ave E N N N N L NSE 2rd Ave SF 2nd Ave SW y N n w 12 g n O Ave SW 3td Ave SE N_ N_ N 20 ob �o� v So Mn la ke br tf6271 � C Kj Data Sources: Dubuque County 6I5, FEMA A Map Prepared by ECIA, 2023 0 0.25 0.5 Miles I I I N Le Whs R Y a ¢E c7 Legend ID City Boundaries 10/o Annual Chance Flood Hazard 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HERE, Garmin, INCREMENT P, USGS, METI/NASA, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 166 Figure 3.44. Citv of Graf 1-Percent Annual Chance Floodalain (100-Year FloodDlain) City of Graf Flood Hazard Map M&,lie Rd talmerville oy ok PIa P.� c � L,�t1c 4 N Data Sources: Dubuque County GIS, FEMA AMap Prepared by KIA, 2023 0 0.25 0.5 Miles Legend I= City Boundaries 10Iu Annual Chance Flood Hazard 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HERE, Garmin, INCREMENT P, USGS, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 167 Figure 3.45. City of Holy Cross 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Holy Cross Flood Hazard Map N Data Sources: Dubuque County GiS, FEMA AMap Prepared by EC[A, 2023 D 0.25 D.5 Mlles I I 1 pa Legend Q City Boundaries 1% Annual Chance Flood Hazard 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HERE, Garmin, INCREMENT P, USGS, MITI/NASA, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 168 Figure 3.46. City of Luxemburg 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Luxemberg Flood Hazard Map m Z' a v AData Sources: Dubuque County GIS, FEMA Map Prepared by EC[A, 2023 0.25 0.5 Miles Legend Q City Boundaries 1% Annual Chance Flood Hazard 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HERE, Garmin, INCREMENT P, USGS, METI/NASA, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 169 Figure 3.47. City of New Vienna 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of New Vienna Flood Hazard Map i L �K Kioslermann Rd f 9 . 7 CT�slr 1 oth p.e:. =LAVA. 3 faclmn st ii "afr�son St ` Will sl Pere rsduq Rd ••••• New Vienna Aim W,71er -gJ - JH187mo A a i I � Ma per st m � � r n nycla Rtvi a _ - - Syorih f Wk }A aay - vaSke Rd z AData Sources: Dubuque County GIS, FEMA Map Prepared by EC[A, 2023 0 0.25 0.5 Miles Legend Q City Boundaries 1% Annual Chance Flood Hazard Regulatory Floodway 0.2% Annual Chance Flood Hazard Iowa DIN Esri Canadawisrj HERE, Garmin, INCREMENT P, I U5G5, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 170 Figure 3.48. City of Peosta 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Peosta Flood Hazard Map Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 171 Figure 3.49. Citv of Rickardsville 1-Percent Annual Chance Floodolain (100-Year Floodalain) City of Rickardsville Flood Hazard Map , 1, R:, V E `^ r-c `�L,�ue Maquoketa Fw'` Data Sources: Dubuque County GIS, FEMA A Map Prepared by ECIA, 2023 0 0.5 1 Miles Legend Q Clty Boundaries 1% Annual Chance Flood Hazard 0.2 1 Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HERE, Garmin, INCREMENT P, Interulplp USGS, METI/NASA, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 172 Figure 3.50. City of Sagevi lie 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Sagevi I le Flood Hazard Map ;.,, v„ . �f_ .r J a� •anh{p ; --------- 1 � G x � n o a P Legend Q City Boundaries 1% Annual Chance See 13ranch Flood Hazard Regulatory Floodway 0.20In Annual Chance Data Sources: Dubuque County 6I5, FEMA Flood Hazard Map Prepared by ECIA, 2023 Kardma�n A,rp Area with Reduced Risk Due to Levee 0 0.5 1 Miles Bunker H r n i Iowa DN�`,,;�sri Canada 'Est4; HLRE, Garmin, INCREMENT , a Intenx�ap, U5G5; 1v}ETIjNASA, EPA, USDA N - — Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 173 Figure 3.51. City of Sherrill 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Sherrill Flood Hazard Map S 4C • •' A L� Data Sources: Dubuque County GIS, FEMA AMap Prepared by ECIA, 2023 0 0.25 0.5 Miles I I I I CIILre Ridge lad Legend Q City Boundaries 1% Annual Chance Flood Hazard 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HERE, Garmin, INCREMENT P, USGS, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 174 Figure 3.52. City of Worthington 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Worthington Flood Hazard Map Rrr, Avc . Data Sources: Dubuque County 6I5, FEMA AMap Prepared by KIA, 2023 0 0.25 0.5 Miles I I I aem r� E LL36 pk c� orthingto Sv+ 1c1 Ave @ Legend Q City Boundaries 10In Annual Chance Flood Hazard Regulatory Floodway 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Esri, HEkc, Wimin, INCREPIE(=P, USG5, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 175 Figure 3.53. City of Zwingle 1-Percent Annual Chance Floodplain (100-Year Floodplain) City of Zwinglo Flood Hazard Map J 0 Ma nleru h2d qq i 00 B r 1 DUBUOUE 3001hSt JACKSON l I 1 m Data Sources: Dubuque County GIS, FEMA AMap Prepared by KIA, 2023 [: 0.25 0.5 Miles Are rsdo rl Rd gl@ )Nash trgmn Mills Rd Legend Q City Boundaries 10/o Annual Chance Flood Hazard 0.2% Annual Chance Flood Hazard Iowa DNR, Esri Canada, Es► HERE, Garmin, INCREMENT P, v USGS, EPA, USDA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 176 Previous Occurrences Presidential Declarations for Floodina in Plannina Area Since 1965 there have been 15 Major Presidential Disaster Declarations that included flooding in the planning area. The only disaster declaration during this period did not include flooding was the 2005 Emergency Declaration for evacuees entering the state due to Hurricane Katrina. Additional details of the flood -related disaster declarations are provided in Table 3.2 in the Hazard Identification Section. According to the National Climatic Data Center, there were 14 reported flood events from 1993- 2016. Please note events reported less than 10 days apart were combined and counted as one event. Details are provided below in Table 3.53. Table 3.53. NCDC Flood Events in Dubuque County, 1997 - 2019 Location Date Deaths Injuries Property Damage Dubuque Count 4/8/1997 0 0 $0 Dubuque Count 5/17/1999 0 0 $0 E worth 6/8/1999 0 0 $0 Worthington 6/8/1999 0 0 $0 Dubuque Count 6/1/2000 0 0 $0 Dubuque Count 4/14/2001 0 0 $0 Dubuque Count 5/1/2001 0 0 $0 Dubuque 6/1/2001 0 0 $0 Dubuque Count 4/21/2002 0 0 $0 Dubuque Count 5/20/2003 0 0 $1,000,000 Dubuque Count 6/16/2004 0 0 $0 Dubuque 4/1/2008 0 0 $0 Balltown 6/1/2008 0 0 $6,400,000 Dubuque 10/1/2010 0 0 $0 Dubuque 10/1/2010 0 0 $0 White Pine Hollow 4/13/2011 0 0 $250,000 Sa eville 4/3/2019 0 0 $0 Dubuque 4/25/2019 0 0 0 Masse 5/1 /2019 1 0 0 0 Total 1 $7,650,000 Source: NCDC Previous Agricultural Impacts Flooding and excess moisture take a toll on crop production in the planning area. According to Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 177 the USDA's Risk Management Agency, payments for insured crop losses in the planning area because of excess moisture and flood conditions from 20013-2020 totaled more than $10 million. According to the USDA, 90% of Iowa's corn and soybean acres are generally insured using Revenue Protection (RP) multiple peril crop insurance. 3.54 summarizes claims paid by year. Table 3.54. Crop Insurance Claims Paid in Dubuque County for Crop Loss because of Excess Moisture/Precipitation/Rain and Flood (2013 - 2020) Damage Cause Sum of Indemnity Amount Sum of Determined Acres Excess Moisture/Precipitation/Rain $9,414,913.66 67599 2013 $998,815.00 7339 2014 $4,249,447.36 24638 2015 $572,365.20 5345 2016 $176,459.05 2848 2017 $513,894.13 3884 2018 $750,546.79 6640 2019 $1,463,549.73 11576 2020 $509,557.40 4462 2021 $162,822.00 608 2022 $17,457.00 259 Flood $672,906.15 3076 2014 $19,390.00 102 2017 $123,283.65 461 2018 $342,415.00 1672 2019 $181,278.50 809 2020 $6,539.00 32 Grand Total $10,087,819.81 70675 Source: USDA Risk Management Agency National Flood Insurance Program (NFIP) Participation Table 3.55 provides details on NFIP participation for the communities in the planning area as well as the number of policies in force, amount of insurance in force, number of closed losses, and total payments for each jurisdiction, where applicable. The claims information is for the period from January 1, 1978, to February 28, 2015. This data was collected using HAZUS flood modeling, which is no longer utilized by the planners at ECIA, therefore the data is not updated past 2017. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 178 Table 3.55. NFIP Participation, Policy, and Claim Statistics Community Name NFIP Participant (Yes/No) Designee / Agency to implement NFIP Requirements Participant in CRS (Yes/No) Current Effective Map Date Regular- Emergency Program Entry Date Total Policy Count Insurance in Force Total Losse s Total Net Dollars Paid Dubuque County Yes Dubuque Soil and Water Conservation District No 8/10/2021 9/1/1983 22 $4,868,000 240 $1,687,657 Asbury Yes City Clerk No 8/10/2021 1/28/2014 2 $700,000 0 0 Balltown Yes (NSFHA) City Clerk No NSHFA 7/14/2023 0 0 0 0 Bankston No N/A No N/A N/A N/A N/A N/A N/A Bernard Yes City Clerk No 8/10/2021 11/8/2011 0 0 0 0 Cascade Yes City Clerk No 8/10/2021 4/2/1979 10 $1,610,000 1 $561 Centralia No N/A No 8/10/2021 N/A N/A N/A N/A N/A Dubuque Yes City Planner No 8/10/2021 4/2/1971 37 $10,048,000 1 $20,103 Durango Yes City Clerk No 8/10/2021 7/16/1981 2 $352,000 0 0 Dyersville Yes City Clerk No 8/10/2021 12/1/1977 26 $2,723,000 5 $21,513 Epworth Yes City Clerk No 8/10/2021 7/12/1977 1 $350,000 0 0 Farley Yes (NSFHA) City Clerk No NSFHA 10/6/2011 0 0 0 0 Graf Yes City Clerk No 8/10/2021 4/10/2012 0 0 0 0 Holy Cross Yes City Clerk No 8/10/2021 11/9/2011 0 0 0 0 Luxemburg Yes City Clerk No 8/10/2021 3/23/2015 0 0 0 0 New Vienna Yes City Clerk No 8/10/2021 10/18/1983 0 1 0 0 0 Peosta Yes City Clerk No 8/10/2021 8/1/2012 0 0 0 0 Rickardsville Yes City Clerk No 8/10/2021(M) 10/7/2021 0 0 0 0 Sageville Yes City Clerk No 8/10/2021 6/15/1984 1 $210,000 0 0 Sherrill Yes City Clerk No 8/10/2021 7/26/2022 0 0 0 0 Worthington Yes City Clerk No 8/10/2021 10/18/1983 0 0 0 0 Zwingle Yes City Clerk No 8/10/2021 9/12/2011 0 0 0 0 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 179 All Dubuque County Communities participating in the NFIP have adopted the minimum floodplain management criterial and the latest effective firm. All Dubuque County communities participating in the NFIP implement and enforce flood plain regulation on development in the SFHA by requiring permits for development in the floodplain and flood insurance on all mortgaged property in the floodplain. All Dubuque County communities participating in the NFIP implement substantial improvement / substantial dmg provisions in the following manner Local officials (1) determine the cost of work, (2) determine the market value of buildings, (3) make SI/SD determinations and provide determinations to property owners, and (4) require owners to obtain permits to bring substantially improved and substantially damaged structures into compliance with the floodplain management requirements. Bankston and Centralia have chosen not to participate in the NFIP because these communities have no buildings in the flood plain. Source: FEMA Community Status Book Report, 10/27/2023. https://www.fema.gov/cis/lA.pdf Source: FEMA National Flood Insurance Program, Data and Analytics, HUDEX Report. https://nfipservices.floodsmart.gov/reports-flood-insurance-data (M )- No elevation determined - All Zone A, C and X (NSFHA) - No Special Flood Hazard Area - All Zone C * Total losses and total dollars paid for Dubuque County include values that were listed as unknown community in the HUDEX report. Source: HUDEX Report Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 180 Repetitive Loss/Severe Repetitive Loss Properties Repetitive Loss: Repetitive Loss Properties are those properties with at least two flood insurance payments of $5,000 or more in a 10-year period. Severe Repetitive Loss (SRL): SRL properties are defined it as "a single family property" (consisting of one -to -four residences) that is covered under flood insurance by the NFIP and has incurred flood -related damage for which four or more separate claims payments have been paid under flood insurance coverage with the amount of each claim payment exceeding $5,000 and with cumulative amounts of such claims payments exceeding $20,000; or for which at least two separate claims payments have been made with the cumulative amount of such claims exceeding the reported value of the property. Table 3.56 provides additional details about the Repetitive and Severe Repetitive Loss Properties in Dubuque County. Table 3.56. Recorded Repetitive Loss Properties as of October 2023 Total Repetitive Loss Properties State ID Repetitive Loss Properties Total Losses Total Building Pa ments Total Contents Payments County Totals 35 87 $1,026,732 $84,975 Dubuque, City of 2 6 $79,374 $13,580 Dubuque County 6 14 $241,643 $21,995 Durango, City of 4 12 $264,689 $44,239 Dyersville, City of 23 55 $441,026 $5,161 Unmitigated Repetitive Loss Properties Jurisdiction Repetitive Loss Properties Total Losses Total Building Pa ments Total Contents Payments County Totals 28 70 $852,143 $71,395 Dubuque, City of 0 0 $0 $0 Dubuque County 6 14 $241,643 $21,995 Durango, City of 4 12 $264,689 $44,239 Dyersville, City of 18 44 $345,811 $5,161 Source: FEMA PIVOT Database. Accessed by Iowa DNR on 10/27/2023. Probability of Future Occurrence With the history of flooding in the planning area, it is likely that flooding of various levels will continue to occur. According to NCDC, in the six -year timeframe from 2018-2023, there were only four flood events, down ten events (multiple events less than ten days apart counted as one event) from the previous 2019 Dubuque County Hazard Mitigation plan, which covered 2008-2018. Further, no crop or property Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 181 damage was recorded with any of the four events. Vulnerability Potential Losses to Existing Development The potential losses to existing development will be provided for the following categories of losses: • Building/Property Losses • Estimated Population Displaced • Agricultural Impacts; and • Critical Facilities and Infrastructure at Risk. Agricultural Impacts Considering that 90 percent of insurable crops are insured in Iowa (2023 Iowa Crop Insurance Profile, USDA, RMA), the adjusted losses calculate to $15,714,033 for all insurable crops for the ten-year period, 2013-2023. This results in an average annual loss estimate of $1,571,403 to insurable crops because of excess moisture/precipitation/rain and flood conditions affecting agriculture. Critical Facilities and Infrastructure at Risk To analyze critical facilities at risk in the planning area, the inventory of critical and essential facilities and infrastructure in the planning area was compiled from data layers provided by Dubuque County. A comparison was made of the 429 total critical facilities with the effective flood insurance rate map to determine those facilities that would be damaged in the 1-percent and 0.2-percent annual chance flood events. This analysis determined that there are 17 critical facilities in the 1-percent annual chance floodplain and 4 critical facilities in the 0.2-percent annual chance floodplain. Table 3.59 provides a summary of the critical facilities in the 1- percent annual chance floodplain. Additional details, including specific structure names and addresses as well as details on the 4 facilities in the 0.2-percent annual chance floodplain are provided in Appendix E. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 182 Table 3.59. Critical Facilities in the 1-percent Annual Chance Floodplain Facility Type U G G Z> > O 1-4C7t0 Community / Recreation Center 1 1 2 County Government Facility 1 1 Fire Station / EMS Station 1 1 Municipal Government Facility 1 1 School 1 1 School: Elementary 1 1 Shelters 1 1 2 Sirens 1 1 2 Tier II Facility 1 1 2 Transportation Facility 1 1 Wastewater Treatment Plant 1 1 2 Water Supply or Treatment Facility 1 1 Grand Total 2 1 7 1 4 1 1 17 Appendix E provides the list of critical facilities that were inventoried and analyzed. This Appendix is redacted from the public version of this plan. To obtain access for official use, contact the Dubuque County Emergency Management Agency. According to the National Bridge Inventory, there are several scour critical bridges in Dubuque County. These bridges are depicted in Figure 3.55 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 183 Figure 3.55 Dubuque County Scour Critical Bridges ® 0 ° Grant` _ , _ Legend Bytan City Boundaries ❑ • — �� CountyBoundaries Clayton Clayton • • Graryt ~ ■ Highway Delaware Dubuque BALLTC)VVN a OtIb qu ■ Road 52 • • • • •► 1 ■ — — - Railroad • 3}LlJ7fEMBUR HOLY a 00, a SHERRILL ; `CROSS • I Parks a- 015 ~� 0 i 0 I Water a - p • National Bridge Inventory * • 3 • ■ 1 ` 51 is 8 a Roo �. a Scour Critical Bridge 1 ® ! D ❑ tP ■ • Other Bridges NA i t • a O ❑ 0 O ODD *! SAS L( ❑ 0 1 yl- • 0 0 00 O 0 - ❑ O Grant I�ERSVII. O o BAf., O - 0 I = ° ]a Da�iess C O Q ��F �0 `6' — ■� O j �`1 Q0 O O CEN- RALIA. ' O J _20 52. ❑ 52 20 p r•®O O �p 0 I'EPI+dtXtTH r+jE� ~ nFeQ�A� ❑ 0 O ❑ ❑ t , ❑ 00 n r xo sz w 0 ° OD �-�- 0 tr? i o 10 ■■ � jo ❑ O� N 0 • • 4o�P■ ❑ 52 D qb sS\ ° o ° ❑ o 0 0 9 � as ao G9o� 00 000 00 0 O O \ O a `■ ° ❑ �° OO ❑ • OO p p ° CO O ❑ • ❑ ISI •* • O U ❑ • D 0 @ERN •' O 3 ep Delaware -_subuqu r`Q"0... O Jones ongs . • rn _ to to • • a a ! 1 Miles a •* o W Map created by ECIA, 2023. Data sources: ECIA, ESRI, �. US Census Bureau, US Fish & Wildlife Service, National • • ® _ Bridge lnrentory (N61) -Iowa DOT and FHWA Future Development Any future development in floodplains would increase risk in those areas. For those communities that participate in the National Flood Insurance Program, enforcement of the floodplain management regulations will ensure mitigation of future construction in those areas. With new regulatory flood maps in process of becoming effective, additional communities with designated Special Flood Hazard Areas are intending to join the National Flood Insurance Program, including regulation of development in their floodplains. Climate Change Impacts One of the climate change impacts noted in the 2010 Climate Change Impacts on Iowa report by the Iowa Climate Change Impacts Committee is the increase in frequency of severe precipitation events. This climate change impact was also noted in the Flash Flood hazard analysis. Although very heavy precipitation does not always result in riverine flooding, it can if/when the very heavy precipitation occurs frequently without enough time for the watershed to Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 184 drain away as much water is coming in due to precipitation in the watershed or upstream watersheds. Figure 3.15 in the Flash Flood section shows that all of Iowa is in the region with a 31 % increase in very heavy precipitation from 1958 to 2007. For this study, very heavy precipitation was defined as the heaviest 1 % of all events. If this trend increases, riverine flooding events and their associated impacts will likely occur more often in the planning area. 3.5.14 Severe Winter Storm Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 4 2 3 4 3.25 High Profile Hazard Description Severe winter storms are an annual occurrence in Iowa. A major winter storm can last for several days and be accompanied by high winds, freezing rain or sleet, heavy snowfall, cold temperatures, and drifting snow creating blizzards. The National Weather Service describes different types of winter storm events as follows: • Blizzard —Winds of 35 mph or more with snow and blowing snow reducing visibility to less than '/4 mile for at least three hours. • Blowing Snow —Wind -driven snow that reduces visibility. Blowing snow may be falling snow and/or snow on the ground picked up by the wind. • Snow Squalls —Brief, intense snow showers accompanied by strong, gusty winds. Accumulation may be significant. • Snow Showers —Snow falling at varying intensities for brief periods of time. Some accumulation is possible. • Freezing Rain —Measurable rain that falls onto a surface with a temperature below freezing. This causes it to freeze to surfaces, such as trees, cars, and roads, forming a coating or glaze of ice. Most freezing -rain events are short lived and occur near sunrise between the months of December and March. • Sleet —Rain drops that freeze into ice pellets before reaching the ground. Sleet usually bounces when hitting a surface and does not stick to objects. Heavy accumulations of ice, often the result of freezing rain, can bring down trees, utility poles, and communications towers and disrupt communications and power for days. Even small accumulations of ice can be extremely dangerous to motorists and pedestrians. Severe winter storms include extreme cold, heavy snowfall, ice, and strong winds which can push the wind chill well below zero degrees in the planning area. Heavy snow can bring a community to a standstill by inhibiting transportation (in whiteout conditions), weighing down utility lines and by causing structural collapse in buildings not designed to withstand the weight of the snow. Repair and snow removal costs can be significant. Ice buildup can collapse utility lines and communication towers, as well as make transportation difficult and hazardous. Ice can also become a problem on roadways if the air temperature is high enough so that precipitation falls as freezing rain rather than snow. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 185 Extreme cold often accompanies severe winter storms and can lead to hypothermia and frostbite in people who are exposed to the weather without adequate clothing protection. Cold can cause fuel to congeal in storage tanks and supply lines, stopping electric generators. Cold temperatures can also overpower a building's heating system and cause water and sewer pipe to freeze and rupture. When combined with high winds from winter storms, extreme cold becomes extreme wind chill, which is extremely hazardous to health and safety. The National Institute on Aging estimates that more than 2.5 million Americans are especially vulnerable to hypothermia, with the isolated elderly being most at risk. About 10 percent of people over the age of 65 have some kind of temperature -regulating defect, and 3-4 percent of all hospital patients over 65 are hypothermic. Also, at risk are those without shelter or who are stranded, or who live in a home that is poorly insulated or without heat. Other impacts of extreme cold include asphyxiation (unconsciousness or death from a lack of oxygen) from toxic fumes from emergency heaters; household fires, which can be caused by fireplaces and emergency heaters; and frozen/burst pipes. Wind can greatly amplify the impact of cold ambient air temperatures. Provided by the National Weather Service, Figure 3.56 below shows the relationship of wind speed to apparent temperature and typical time periods for the onset of frostbite. Figure 3.56. Wind Chill Chart Source: National Weather Service Geographic Location/Extent According to the High Plains Regional Climate Center and based on the Dubuque Weather Station, the planning area has an average maximum temperature of 30.82 IF in December, 26.88 OF in January, and 31.98 IF in February. Average minimum temperatures for those same three months are 14.47 OF, 9.36 OF and 13.81 OF. Average snowfall is highest in December, January, and February with an annual average of 33.7 Inches. (Source: http://www.hprcc.unl.edu/datasets.php?set=CountyData#) The entire state of Iowa is vulnerable to heavy snow, extremely cold temperatures, and freezing rain. Generally, winter storms occur between the months of November and March but can occur as early as Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 186 October and as late as April. Figure 3.57 shows that the planning area (approximated within the red square) is in the orange - shaded area that receives 9-12 hours of freezing rain per year. Figure 3.57. Average Number of Hours per Year with Freezing Rain Hours tit 0-3 3-g 0 6-9 9-1 12-15 - 15-18 18-21 21-24 Source: Midwestern Regional Climate Center; http://mcc.sws.uiuc.edu/living_wx/icestorms/index.html Note: Red square provides approximate location of planning area. Previous Occurrences From 2018 - 2023, the National Climatic Data Center reports the following 12 severe winter storm events one blizzard, one extreme cold/wind chill event, one heavy snow, two ice storms, and four winter weather events. NOAA's National Weather Service has issued 398 Advisory, Watch and/or Warnings concerning winter weather phenomena between 2018 and 2023 (see Table 3.60). The data is kept with Iowa Environmental Mesonet, Iowa State University Department of Agronomy. Table 3.60. National Weather Service Issuances for Winter Weather in Dubuque County, IA Phenomenon/Significance Advisory Warning Watch Total Blizzard 5 1 6 Blowing Snow 0 Freeze 33 9 42 Freezing Fog 0 Freezing Rain 9 9 Frost 39 39 Ice Storm 1 1 Snow 0 Snow and Blowing Snow 0 Wind Chill 76 14 3 93 Winter Storm 38 39 77 Winter Weather 131 131 Grand Total 255 1 91 1 52 398 Source: Environmental Mesonet, Iowa State University Department of Agronomy website. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 187 Agricultural Impacts Winter storms, cold, frost and freeze take a toll on crop production in the planning area. According to the USDA's Risk Management Agency, payments for insured crop losses in the planning area because of cold conditions and snow from 2013-2022 totaled $749,327. (see Table 3.61). Table 3.61. Crop Insurance Claims Paid in Dubuque County as a Result of Cold Conditions and Snow (2013-2022) Year Cold Wet Weather Cold Winter Freeze Frost Total Insurance Paid 2013 $5,704.00 $5,704.00 2014 $254 298.23 $18,777.00 $1,493.20 $274 568.43 2015 $61 576.50 $61 576.50 2016 $8 842.11 $19,885.00 $584.00 $29 311.11 2017 66413.5 $1,303.00 $67,716.50 2018 $2,786.75 $2,786.75 2019 $259,950.00 $19,557.00 $279,507.00 2021 $507.00 $1,777.00 $2,284.00 2022 $25 872.50 $25 872.50 Total $685 950.59 $39 637.00 $21 378.20 $2 361.00 $749 326.79 Source: USDA Risk Management Agency Probability of Future Occurrence According to NCDC, from 2016 - 2023, the planning area experienced 12 total blizzards, winter storms, ice storms frost/freeze, and extreme cold events, and annual insurance claims due to cold weather. Vulnerability Vulnerability Overview The entire planning area is vulnerable to the effects of winter storm. Hazardous driving conditions due to snow and ice on highways and bridges lead to many traffic accidents and can impact the response of emergency vehicles. The leading cause of death during winter storms is transportation accidents. About 70 percent of winter -related deaths occur in automobiles due to traffic accidents and about 25 percent are from people caught outside in a storm. Emergency services such as police, fire and ambulance are unable to respond due to road conditions. Emergency needs of remote or isolated residents for food or fuel, as well as for feed, water and shelter for livestock are unable to be met. The probability of utility and infrastructure failure increases during winter storms due to freezing rain accumulation on utility poles and power lines. People, pets, and livestock are also susceptible to frostbite and hypothermia during winter storms. Those at risk are primarily either engaged in outdoor activity (shoveling snow, digging out vehicles, or assisting stranded motorists), or are the elderly. Schools often close during extreme cold or heavy snow conditions to protect the safety of children and bus drivers. Citizens' use of kerosene heaters and other alternative forms of heating may create other hazards such as structural fires and carbon monoxide poisoning. Potential Losses to Existing Development Vulnerable Buildings, Infrastructure, and Critical Facilities Buildings with overhanging tree limbs are more vulnerable to damage during winter storms. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 188 Businesses experience loss of income because of closure during power outages. In general, heavy winter storms increase wear and tear on roadways though the cost of such damages is difficult to determine. Businesses can experience loss of income because of closure during winter storms. Loss of Use Overhead power lines and infrastructure are also vulnerable to damages from winter storms, in particular ice accumulation during winter storm events can cause damages to power lines due to the ice weight on the lines and equipment as well as damage caused to lines and equipment from falling trees and tree limbs weighted down by ice. Potential losses would include the cost of repair or replacement of damaged facilities and lost economic opportunities for businesses. Secondary effects from loss of power could include burst water pipes in homes without electricity during winter storms. Public safety hazards include the risk of electrocution from downed power lines. Specific amounts of estimated losses are not available due to the complexity and multiple variables associated with this hazard. The electric power loss of use estimates provided in Table 3.62 below were calculated using FEMA's Standard Values for Loss of Service for Utilities published in the June 2009 BCA Reference Guide. These figures are used to provide estimated costs associated with the loss of power in relation to the populations in Dubuque County's jurisdictions. The loss of use estimates for power failure associated with winter storms is provided as the loss of use cost per person, per day of loss. The estimated loss of use provided for each jurisdiction represents the loss of service of the indicated utility for one day for 10 percent of the population. It is understood that in rural areas, the typical loss of use may be for a larger percentage of the population for a longer time during weather extremes. These figures do not consider physical damages to utility equipment and infrastructure. Table 3.62. Loss of Use Estimates for Power Failure (One Day) Jurisdiction 2020 Population Census Estimated Affected Population 10% Electric Loss of Use Estimate ($126 per person per day) Asbury 5943 594.3 $74,881.80 Balltown 79 7.9 $995.40 Bankston 23 2.3 $289.80 Bernard 114 11.4 $1,436.40 Cascade 2386 238.6 $30,063.60 Centralia 116 11.6 $1,461.60 Dubuque 59667 5966.7 $751,804.20 Durango 10 1 $126.00 Dyersville 4477 447.7 $56 410.20 Epworth 2023 202.3 $25 489.80 Farley 1766 176.6 $22 251.60 Graf 76 7.6 $957.60 Holy Cross 356 35.6 $4,485.60 Luxemburg 245 24.5 $3,087.00 New Vienna 382 38.2 $4 813.20 Peosta 1908 190.8 $24 040.80 Rickardsville 202 20.2 $2,545.20 Sageville 95 9.5 $1 197.00 Sherrill 189 18.9 $2,381.40 Worthington 382 38.2 $4,813.20 Zwingle 84 1 8.4 1 $1 058.40 Unincorporated Dubuque County 18743 1874.3 $236 161.80 Total 1 99266 9926.6 $1,250,751.60 Source: Loss of Use Estimates from FEMA BCA Reference Guide, 2009; Population Estimates, U.S. Census Bureau, 2023. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 189 Property Losses The total property loss reported by the NCDC for a total of 164 winter events that impacted the planning area during the 24-year time -period from 1993 through 2016 was $28,000. However, damages for winter and ice storms are reported for all weather zones impacted. So, it is extremely difficult to determine the damages from these events that apply specifically to Dubuque County. USDA crop insurance claims for cold conditions and snow for the ten-year period of 2007-2016 totaled $570,327. The 2015 Iowa Crop Insurance Profile from USDA, RMA shows that 89 percent of crops are insured in Iowa and the adjusted losses calculate to $640,817 for the period and $64,082 in estimated annualized losses. Considering the $120 million market value of crops from the 2012 Census of Agriculture as baseline crop exposure, the estimated annual losses from cold conditions and snow was determined minimal (0.05%) compared to the value of the insurable crops. Increased Risk Populations Elderly populations are at increased risk of Winter Storms and associated extreme cold events. The Extreme Heat Profile Section provides the number of populations over 65 in each jurisdiction in the planning area. Future Development Future development could potentially increase vulnerability to this hazard by increasing demand on the utilities and increasing the exposure of infrastructure networks. Climate Change Impacts According to the 2010 report on Climate Change Impacts on Iowa, Iowa has experienced a long-term upward trend in temperature • Long-term winter temperatures have increased six times more than summer temperatures. • Nighttime temperatures have increased more than daytime temperatures since 1970. • Since 1970, daily minimum temperatures have increased in summer and winter; daily maximum temperatures have risen in winter but declined substantially in summer. If this trend continues, future occurrences of the extreme cold/wind chill aspects of winter storms should decrease. In addition, higher winter temperatures bring higher probability of rain, rather than snow. As a result, the amount of precipitation falling as snow should decrease. 3.5.15 Sinkholes Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 1 1 4 1 1.45 Low Profile Hazard Description Sinkholes are common where the rock below the land surface is limestone, carbonate rock, salt Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 190 beds, or rocks that can naturally be dissolved by ground water circulating through them. As the rock dissolves, void spaces and caverns develop underground. The sudden collapse of the land surface can be dramatic and range in size from broad, regional lowering of the land surface to localized collapse. Although subsidence can be a naturally occurring hazard, the primary causes of most incidents of subsidence are human activities: underground mining of coal, groundwater or petroleum withdraw, and drainage of organic soils. Land subsidence occurs slowly and continuously over time or on occasion abruptly, as in the sudden formation of sinkholes. Sinkholes can be aggravated by flooding. Karst is a landscape formed from the dissolution of soluble rocks including limestone, dolomite, and gypsum. Sinkholes are a common indication of karst; caves and underground drainage systems are other indicators. With limestone commonly found in northeast Iowa, sinkholes have the potential to occur. Geographic Location/Extent There are three areas in Iowa where large numbers of sinkholes exist: 1) within the outcrop belt of the Ordovician Galena Group carbonates in Allamakee, Clayton, and Winneshiek Counties. 2) in Devonian carbonates in Bremer, Butler, Chickasaw and particularly Floyd and Mitchell counties; and 3) along the erosional edge of silurian carbonates in Dubuque and Clayton Counties. According to the Department of Natural Resources, there are sinkholes as well as potential karst areas in Dubuque County (see Figure 3.58) Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 191 Figure 3.58. Karst Terrain (Sinkhole Location and Potential, Dubuque County NE Iowa Karst Leg- d fil 21 �. Source: Iowa Department mNatural Resources; Dubuque County identified uyblack rectangle Mining activity can also head to sinkhole development. Hovvever, mining within the planning Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 192 Figure 3.59 Historic Coal Mining Areas ` rao¢es eseTMrne ca�rs� MS(01'k C0:lf Alll1111,fi, i�FeW, __ .m.. Source. Iowa Department of Natural Resources •°^ tw• o[aaola oirklnnon Emmet W lone bago orth Mitchell Howard win nes hek Alla riv kee Y h Giou. Ohrin Chy Pah Ally Hancock rm Gordo rbytl chi asaw eayene claymn Plm�utl' the ml.ee Genatn wzahnnv umhotlt are mer Wright Frankin 9ut1Ir 4 clack Fiwk �� 9achaaan oelawre ouhuque —dbury tla Sr olbun G miltan wrdAk.in� ru Ny • L[Kon bnea onona cra wro rd prrGll Greene• nory Manhalr hR° xenon S � • two Clinton • Cetlar w rraon Shelty aitl ubon cutter .1 S Bilk Sisye,r Poweshek bua bhmon �t Mia[a[ix • • vo[ta wattamre oss M.it Madkon Aman Males-IP A okuk �hing[o,? � • Louisa Milk outgo rrery ••{{ a'da ms unnn clams �tuc Mo• •J� •Jetkrs nry, • gyro pe, Molnes : remont : g TaYbr pa Mg.w xcatur Wayne PP mra tkn Kre Y R � � 1 � Lee - Coal Mine Locations Source: Iowa Department of Natural Resources Previous Occurrences The City of Dubuque has experienced sinkholes. Additionally, the Unincorporated County, City of Bankston, and City of Epworth indicated sinkhole risk. However, there is not repository of previous events to provide additional details. Probability of Future Occurrence Based on reports of sinkhole events as well as known sinkhole areas and Kars topography, the probability of future occurrences is "Occasional'. Vulnerability Vulnerability Overview If a sinkhole were to form, people and structures located on or near the sinkhole are the most at risk for injury, death, and property damage. Potential Losses to Existing Development Due to the lack of information regarding previous occurrences of this hazard, it is not possible to estimate potential losses. Future Development Future development will increase vulnerability to this hazard. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 193 Climate Change Impacts There are no noted trends in climate change that would not have a significant effect on the occurrence of sinkholes. 3.5.16 Terrorism Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 1 1 4 4 1.75 Low Profile Hazard Description This hazard encompasses the following sub -hazards: enemy attack, biological terrorism, agro- terrorism, chemical terrorism, conventional terrorism, cyber terrorism, radiological terrorism, and public disorder. These hazards can occur anywhere and demonstrate unlawful force, violence, and/or threat against persons or property causing intentional harm for purposes of intimidation, coercion, or ransom in violation of the criminal laws of the United States. These actions may cause massive destruction and/or extensive casualties. The threat of terrorism, both international and domestic, is ever present, and an attack can occur when least expected. An enemy attack is an incident that could cause massive destruction and extensive casualties throughout the world. Some areas could experience direct weapons' effects: blast and heat; others could experience indirect weapons' effect. International political and military activities of other nations are closely monitored by our federal government and the State of Iowa would be notified of any escalating military threats. The use of biological agents against persons or property in violation of the criminal laws of the United States for purposes of intimidation, coercion or ransom can be described as biological terrorism. Liquid or solid contaminants can be dispersed using sprayers/aerosol generators or by point of line sources such as munitions, covert deposits and moving sprayers. Biological agents vary in the amount of time they pose a threat. They can be a threat for hours to years depending upon the agent and the conditions in which it exists. Agro-terrorism consists of acts to intentionally contaminate, ruin, or otherwise make agricultural products unfit or dangerous for consumption or further use. Agriculture is an important industry in Iowa and Dubuque County. The introduction of a biological agent into the population of 135,000 cattle and calves, or the 137,271 hogs and pigs, or the 146,000 acres of corn in Dubuque County would be financially devastating and would have a major impact on the food supply of the state and the nation. A major attack involving the nation's food supply could be launched in a rural area that has little capacity to respond. Potential terrorists' targets for livestock disease introduction would be concentration points, such as the County's licensed feedlots or livestock markets discussed later in the Geographic Location section. Chemical terrorism involves the use or threat of chemical agents against persons or property in violation of the criminal laws of the United States for purposes of intimidation, coercion, or ransom. The effects of chemical contaminants are like biological agents. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 194 Use of conventional weapons and explosives against persons or property in violation of the criminal laws of the United States for purposes of intimidations, coercion, or ransom is conventional terrorism. Hazard affects are instantaneous; additional secondary devices may be used, lengthening the time duration of the hazard until the attack site is determined to be clear. The extent of damage is determined by the type and quantity of explosive. Effects are generally static other than cascading consequences and incremental structural failures. Conventional terrorism can also include tactical assault or sniping from remote locations. Electronic attack using one computer system against another to intimidate people or disrupt other systems is a cyber-attack. All governments, businesses and citizens that conduct business utilizing computers face these threats. Cyber-security and critical infrastructure protection are among the most important national security issues facing our country today. As such, the Iowa Division of Criminal Investigation has a Cyber Crime Unit tasked with analysis and retrieval of digital information for investigations. Radiological terrorism is the use of radiological materials against persons or property in violation of the criminal laws of the United States for purposes of intimidation, coercion, or ransom. Radioactive contaminants can be dispersed using sprayers/aerosol generators, or by point of line sources such as munitions, covert deposits and moving sprayers or by the detonation of a nuclear device underground, at the surface, in the air or at high altitude. Mass demonstrations, or direct conflict by large groups of citizens, as in marches, protect rallies, riots, and non -peaceful strikes are examples of public disorder. These are assembling of people together in a manner to substantially interfere with public peace to constitute a threat, and with use of unlawful force or violence against another person, or causing property damage or attempting to interfere with, disrupting, or destroying the government, political subdivision, or group of people. Labor strikes and work stoppages are not considered in this hazard unless they escalate into a threat to the community. Vandalism is usually initiated by a small number of individuals and limited to a small target or institution. Most events are within the capacity of local law enforcement. The Southern Poverty Law Center reported in 2014 there were five active hate groups in Iowa: one racist skinhead group (Aryan Strike force), three Ku Klux Klan groups (Fraternal White Knights of the KKK, Loyal White Knights of the KKK, and New Empire Knights of the KKK) and one Neo-Nazi group (National Socialist Movement). Geographic Location/Extent The entire planning area has a low potential for terrorist activity. However, any venue with a large gathering of people could be a potential target for terrorists. The most likely targets of a conventional terrorism attack in Dubuque County include public school system facilities, the Dubuque County Courthouse and law enforcement centers within Dubuque County. In terms of cyber-terrorism, our society is highly networked and interconnected. An attack could be launched from anywhere on earth and could range in impacts from small and localized to a far- reaching global scale. Depending on the attack vector and parameters, a cyber-attack could impact all of Dubuque County and its associated municipal jurisdictions. For agro-terrorism planning, Figure 3.60 shows the locations of animal feeding operations in Dubuque Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 195 County. Additional agricultural assets are discussed in Section 3.5.1, Animal/Plant/Crop Disease. Figure 3.60. Animal Feeding Operations in Iowa Animal Feeding Operations in Iowa ' ,f � �r r • � .r.'i • • °J�'rir. ss�Lii f„ •• •,r•m„ `�•`.•�.. f.. ! ..may • �' .. .. M it �" „•• � t * �� dam. .Jf _• ••��-• •i� ; rG�• r �« i . 7` •�°7{ � • r •'gym' '.� : .'••r r n�, at w.• :..+ • *��' .'�.mea •ate �erY lLe N �^ Previous Occurrences There have not been any large-scale enemy attacks or acts of radiological terrorism in Iowa. There have been biological and chemical agent threats, animal rights activists' vandalism and many bomb threats. In 2002, pipe bombs were found in 18 states including Iowa and six people were injured in the bombings in Iowa and Illinois. In 2005 and 2006, pipe bombs were used in attempted murder cases in two Iowa cities. The Iowa Department of Public Safety issued a 2009 Iowa Uniform Crime Report showing 18 hate/bias crimes were reported statewide in 2009, with an average of 33 hate/bias crimes statewide from 2000-2009. According to the Southern Poverty Law Center, there was one reported hate crime that occurred in Dubuque County in March of 2016. Probability of Future Occurrence While difficult to estimate, the probability for a terrorist event is "Unlikely" within the next 10 years in Dubuque County. Vulnerability Overview A terrorism event could occur in either a limited area of a jurisdiction or over the entire jurisdiction at once. This hazard can directly cause substantial structural losses and potentially loss of life. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 196 Potential Losses to Existing Development Potential losses from Terrorism include all infrastructure, critical facilities, crops, humans, and animals. The degree of impact would be directly related to the type of incident and the target. Potential losses could include cost of repair or replacement of damaged facilities, lost economic opportunities for businesses, loss of human life, injuries to persons, loss of food supplies, disruption of the food supply chain, and immediate damage to the surrounding environment. Secondary effects of infrastructure failure could include public safety hazards, spread of disease, increased morbidity and mortality among the local and distant populations, public panic, and long-lasting damage to the environment. Terrorism events are rare occurrences and specific amounts of estimated losses for previous occurrences are not available due to the complexity and multiple variables associated with these types of hazards. In some instances, information about these events is secure and unavailable to the public to maintain national security and prevent future attacks. As discussed previously, it is difficult to quantify potential losses in terms of the jurisdictions most threatened by CBRNE (chemical, biological, radiological, nuclear, and high yield explosive) attack events due to the many variables and human element. Therefore, for the purposes of this plan, the loss estimates will consider a hypothetical scenario. The attack scenario is staged at a Friday night high school football game. The hypothetical football stadium has approximately 500 persons in the stadium and concession areas on any home football game nights during the fall. Analysis of vulnerable populations is aided by a program developed by Johns Hopkins University in 2006 called Electronic Mass Casualty Assessment and Planning Scenarios (EMCAPS) which utilizes scenarios developed by the Department of Homeland Security. ****THE FOLLOWING HYPOTHETICAL SCENARIO IS FOR INSTRUCTIONAL AND ILLUSTRATIVE PURPOSES ONLY**** Chemical Attack — Toxic Gas — Chlorine Release Scenario Overview: A bomb is attached to a truck trailer tanker carrying compressed chlorine and enters the high school football stadium parking lot. The entire contents of the tank escape to the atmosphere and the plume spreads to the stadium and the immediate surrounding parking lot area. This attack would cause harm to humans and could render portions of the stadium unusable for a short period to allow for a costly clean-up. There might also be a fear by the public of long-term contamination of the stadium and the high school subsequent closing the high school. Assumptions: (1) The population density is approximately 500 persons around the high school stadium (2) Chlorine is toxic and may damage the eyes, skin, and respiratory tract. (3) The rate of "worried well" is equal to 9 times the number of infected cases or the full exposed population, whichever is least. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 197 Table 3.63. Described Losses from a Chemical Attack — Chlorine Scenario Eye pain & swelling, headache, restricted airflow— difficulty breathing, possible chemical burns 22 persons Eye pain & swelling, headache, rapid breathing, skin irritation 42 persons Eye pain & swelling, headache, rapid breathing, coughing, chest pain, skin irritation 86 persons Eye irritation, headache, throat irritation, coughing, skin irritation 119 persons Eye irritation, headache, coughing, skin irritation 82 persons Total "Worried Well" Cases (total exposed population) 500 persons Deaths 16 persons Cost of Decontamination @ $12/person (assumes all persons with skin injuries will require decontamination and approximately 1/10 of the worried well will demand to be decontaminated) - total persons =417 $5,004 Notes: Victims will require decontamination and both long- and short-term treatment. Improvised Explosive Device Attack — ANFO Scenario Overview: An Improvised Explosive Device (IED) utilizing an ammonium nitrate/fuel oil (ANFO) mixture is carried in a panel van to a high school parking area at the beginning of a home football game when people are leaving their cars and entering the stadium. Potential losses with this type of scenario include both human and structural assets. Assumptions: (1) The population density in the parking lot during the beginning and ending of the game is high, at least 1 person /1 square feet. (2) The quantity of ANFO used is 500 lbs. Table 3.64. Described Losses from an Improvised Explosive Device Attack - ANFO Total Dead 86 persons Total Traumatic Injuries 151 persons Total Urgent Care Injuries 745 persons Injuries not Requiring Hospitalization 279 persons Structures and Other Physical Assets Vehicles — (Damages would certainly occur to vehicles and Replacement cost for approximately 350 vehicles @ depending on the proximity of other structures, damages $10,000 per vehicle inside the 200 ft. BATF described would occur to the stadium complex itself. The exact Lethal Air Blast range = $ 3,500,000 amount of these damages is difficult to predict because Repair / repainting cost for approximately 70 vehicles @ of the large numbers of factors, including the type of $ 4,000 per vehicle inside the BATF described Falling structures nearby and the amount of insurance held by Debris Hazard = $280,000 vehicle owners.) Note: These are the numbers of persons that could be injured from an IED Attack if they are in the area. Future Development As public events are held at various venues in the County, the potential may exist for these locations to become targets of attack. With human -caused hazards such as this that can have multiple variables involved, increases in development is not always a factor in determining risk, although the physical damages of the event may increase with the increased or newly developed areas. Climate Change Impacts There are no known climate change impacts relevant to this hazard. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 198 3.5.17 Thunderstorm with Lightning and Hail Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 4 2 3 2 3.05 High Profile Hazard Description A thunderstorm is defined as a storm that contains lightning and thunder which is caused by unstable atmospheric conditions. When the colder upper air sinks and warm moist air rises, storm clouds or `thunderheads' develop, resulting in thunderstorms. This can occur singularly, in clusters or in lines. Severe thunderstorms most often occur in Iowa in the spring and summer, during the afternoon and evenings, but can occur at any time. Other hazards associated with thunderstorms and lightning include heavy rains causing flash flooding (discussed separately in Section 3.5.6) and tornadoes and windstorms (discussed further in Section 3.5.18). Lightning All thunderstorms produce lightning, which often strikes outside of the area where it is raining and is known to fall more than 10 miles away from the rainfall area. Thunder is simply the sound that lightning makes. Lightning is a huge discharge of electricity. When lightning strikes, electricity shoots through the air and causes vibrations creating the sound of thunder. Nationwide, lightning kills 75 to 100 people each year. Lightning strikes can also start building fires, wildland fires, and damage electrical systems and equipment. Hail According to the National Oceanic and Atmospheric Administration (NOAA), hail is precipitation that is formed when updrafts in thunderstorms carry raindrops upward into extremely cold areas of the atmosphere causing them to freeze. The raindrops form into small frozen droplets and then continue to grow as they encounter super -cooled water which will freeze on contact with the frozen rain droplet. This frozen rain droplet can continue to grow and form hail. If the updraft forces can support or suspend the weight of the hailstone, hail can continue to grow. At the time when the updraft can no longer support the hailstone, it will fall to the earth. For example, a %" diameter or pea sized hail requires updrafts of 24 mph, while a 2 1/4" diameter or baseball sized hail requires an updraft of 81 mph. The largest hailstone recorded in the United States was found in Vivian, South Dakota on July 23, 2010, measuring eight inches in diameter, almost the size of a soccer ball. Soccer -ball -sized hail is the exception, but even small pea sized hail can do damage. Hailstorms in Iowa cause damage to property, crops, and the environment and kill and injure livestock. In the United States, hail causes more than $1 billion in damage to property and crops each year. Much of the damage inflicted by hail is to crops. Even relatively small hail can shred plants to ribbons in a matter of minutes. Vehicles, roofs of buildings and homes and landscaping are the other things most damaged by hail. Hail has been known to cause injury to humans, occasionally, these injuries can be fatal. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 199 Table 3.65 below describes typical damage impacts of the various sizes of hail. Table 3.65. Tornado and Storm Research Organization Hailstorm Intensity Scale Intensity Diameter Diameter Size Typical Damage Impacts Category (mm) (inches) Description Hard Hail 5-9 0.2-0.4 Pea No damage Potentially 10-15 0.4-0.6 Mothball Slight general damage to plants, crops Damaging Significant 16-20 0.6-0.8 Marble, grape Significant damage to fruit, crops, vegetation Severe 21-30 0.8-1.2 Walnut Severe damage to fruit and crops, damage to glass and plastic structures, paint and wood scored Severe 31-40 1.2-1.6 Pigeon's egg > Widespread glass damage, vehicle bodywork squash ball damage Destructive 41-50 1.6-2.0 Golf ball > Pullet's Wholesale destruction of glass, damage to tiled egg roofs, significant risk of injuries Destructive 51-60 2.0-2.4 Hen's egg Bodywork of grounded aircraft dented; brick walls pitted Destructive 61-75 2.4-3.0 Tennis ball > Severe roof damage, risk of serious injuries cricket ball Destructive 76-90 3.0-3.5 Large orange > Severe damage to aircraft bodywork Soft ball Super 91-100 3.6-3.9 Grapefruit Extensive structural damage. Risk of severe or Hailstorms even fatal injuries to persons caught in the open Super >100 4.0+ Melon Extensive structural damage. Risk of severe or Hailstorms even fatal injuries to persons caught in the open Source: Tornado and Storm Research Organization (TORRO), Department of Geography, Oxford Brookes University Notes: In addition to hail diameter, factors including number and density of hailstones, hail fall speed and surface wind speeds affect severity. The onset of thunderstorms with lightning and hail is generally rapid. However, advancements in meteorological forecasting allow for some advance warning. Geographic Location/Extent Thunderstorms and the associated hail and lightning impact the entire County with relatively similar frequency. Although these events occur similarly throughout the planning area, they are more frequently reported in more urbanized areas. In addition, damages are more likely to occur in more densely developed urban areas as well as to cropland. Figure 3.61 displays the average number of days with thunder experienced throughout different areas of the county each year, showing the County experiences between 40.5 to 50.4 days with thunder per year. Figure 3.62 shows 2 to 4 lightning strikes per square kilometer per year with the yellow shaded area. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 200 1� Figure 3.61. Annual Mean Thunderstorm Days (1993-2018) Annual Mean Thunderstorm Days (1993-201 S) li_,.....,. Days 9+to18 27+to3 45+ta54 - 63+tort ai+to8t7 ss+tofo8 • ¢ Is* to 27 1 36+ to 45 54+ to 83 72+ to 01 90+ to 99 > 100 Figure 3.62. Location and Frequency of Lightning in Iowa °s J Iraq j 'A Source: National Weather Service. Note: Black Square indicates approximate location of Dubuque County Flash Density flashes/sq. km/year 16 and up ■ 8 to 16 4 to 8 2 to 4 1 to 2 ■ 0.5 to 1 0.25 to 0.5 0+ to D,25 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 201 Previous Occurrences Since 1965, Dubuque County has been included in 12 presidential disaster declarations that included severe storms/weather (see Table 3.2 in the Hazard Identification Section). Some of the damages that resulted in the declarations were from tornadoes and flooding that accompanied the severe weather. The NCDC reported 86 total thunderstorm events for the Dubuque County planning area from January 1998 through September 2023. Of the reported events, there was $2.85 million in total property damage, five injuries and no fatalities. Table 3.66. Thunderstorm Summary for Dubuque County (1998-2023) Hazard type Total Events Events with Damage Property Damage Injuries Fatalities Hail 56 5 $1,020,000 0 0 Lightning 2 2 $350,000 0 0 Thunderstorm Wind 86 28 $2,852,000 5 0 Totals 1441 35 $4,222,0001 51 0 Source: NCDC Hail Table 3.67 shows the number of hail events 0.75 inches and larger by the size of the hail. Table 3.67. Hail Events Summarized by Hail Size Hail Size (inches) # of Events 2000-2022 3.50 1 3.00 1 2.50 1 2.00 3 1.75 25 1.50 4 1.25 3 1.00 43 0.88 15 0.75 27 Grand Total 123 Source: NCDC Thunderstorm Winds Information concerning tornadoes and windstorms, separate from thunderstorms, can be found in Section 3.5.18. The National Weather Service (NWS) will issue a Severe Thunderstorm Warning whenever a thunderstorm is forecasted to produce wind gusts to 58 miles per hour (50 knots) or greater and/or hail size one inch (quarter -size) diameter which can produce significant damage. The data is kept on Iowa Environmental Mesonet, Iowa State University Department of Agronomy website. Although NCDC provides estimates of crop losses, crop insurance payment statistics are considered a more accurate resource for this data. According to the USDA Risk Management Agency, insured crop losses in Dubuque County because of hail from 2014 to Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 202 2021 totaled $308,179 (see Table 3.68) and $1,672,077.26 from windstorms. There was no crop damage reported from lightning. Table 3.68. Crop Insurance Claims Paid in Dubuque County from Hailstorms and Windstorms, 2014-2021 Year Hail Wind/Excess Wind Insurance Paid 2014 $23,356.15 $30,492.00 $53,848.15 2015 $38 058.50 $38 058.50 2016 $5,566.11 $5,566.11 2017 $284,822.85 $256,507.50 $541,330.35 2019 $20 917.00 $20 917.00 2020 $1 133 883.15 2021 1 $186 653.00 $186 653.00 Total 1 $308,179.00 $1,672,077.26 $846,373.11 Source: USDA Risk Management Agency Probability of Future Occurrence NCDC-reported damaging lightning events occurred two (2) times from 2018 through September 2023. Since lightning accompanies thunderstorms, it can be assumed that lightning occurs more often than damages are reported. These rates of occurrence are expected to continue in the future. Based on NCDC data, there have been 14 damaging hail events, 2 damaging lightning events and 66 damaging thunderstorm wind events. This translates to a combined annual average of 3.4 damaging events per year respectively. Based on this history, damaging hail and thunderstorm wind occur in the planning area multiple times each year making the probability for damaging events "Highly Likely" in any given year. Vulnerability Overview In general, assets in the County are vulnerable to thunderstorms, winds, lightning, and hail including people, crops, vehicles, and built structures. Although this hazard results in high annual losses, generally private property insurance and crop insurance cover most losses. Considering insurance coverage as a recovery capability and therefore mitigation of devastating impacts to the economy, the overall impact on jurisdictions is reduced; therefore, this hazard's magnitude score to the planning area is "limited". Potential Losses to Existing Development Most lightning damages occur to electronic equipment located inside buildings. But structural damage can also occur when a lightning strike causes a building fire. In addition, lightning strikes can cause damages to crops if fields light on fire. Communications equipment and warning transmitters and receivers can also be knocked out by lightning strikes. There have not been any fatalities in Dubuque County from lightning strikes. Thunderstorm winds and hail can cause damage to property, vehicles, trees, and crops. Property and Crop Losses Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 203 Table 3.69 provides the estimated annualized property damages resulting from Thunderstorms, including lightning, hail, and wind. This annualized damage has been compared to the total building exposure for Dubuque County and the level of damage is minimal compared to the value of building exposure. Table 3.69. Estimated Annualized Property Damages Resulting from Severe Thunderstorms (Hail/Lightning/Wind, 2000-2022) Hail / Lightning / Thunderstorm Wind Property Damages (2000-2022) Annualized Property Damages Hail $1,020,000.00 Lightning $350,000.00 Thunderstorm Wind $2,852,000.00 Total $4,222,000.00 $191,909.09 Source: NOAA Storm Events Database Table 3.70 provides the insured crop losses resulting from hail and wind. The insured loss has been adjusted to estimate losses to all insurable crops by considering that 89 percent of insurable crops in the State were insured (2017 Iowa Crop Insurance Profile from USDA's Risk Management Agency). Table 3.70. Estimated Insurable Annualized Crop Damages Resulting from Severe Thunderstorms (Hail/[Wind) Adjusted Crop Annualized Crop Exposure Insurance Paid (2014-2021) Damages Adjusted (2017) Considering 89% Crop Insured Damages Hail $308,179.00 Wind/Excess Wind $1,672,077.26 $128,304,000.00 Total: $1,980,256.26 $2,225,007.03 $222,500.70 Source: Crop value is from USDA 2017 Census of Agriculture; Crop Insurance Paid is from the USDA's Risk Management Agency for 2014-2021.; Crop Insurance Coverage is from USDAs 2017 State Crop Insurance Profile for Iowa Future Development Any additional future development will result in more property being vulnerable to damages from severe thunderstorms, lightning, and hail. To minimize vulnerability, protective measures could be implemented such as wind -resistant construction, lightning rods, surge protection and use of materials less prone to hail/wind damage. Climate Change Impacts According to the 2010 Climate Change Impacts on Iowa report, growing evidence points to stronger summer storm systems in the Midwest. Studies have not been done to conclusively say that severe storms, including hail, lightning, and strong winds, are increasing. However, with summer temperatures becoming warmer and humidity levels increasing, an increase in the Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 204 likelihood of these hazards is plausible. 3.5.18 Tornado/Windstorm Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 4 3 3 3 3.45 High Profile Hazard Description This hazard section discusses both tornado and windstorm. Tornado: The NWS defines a tornado as "a violently rotating column of air extending from a thunderstorm to the ground." It is usually spawned by a thunderstorm and produced when cool air overrides a layer of warm air, forcing the warm air to rise rapidly. Often, vortices remain suspended in the atmosphere as funnel clouds. When the lower tip of a vortex touches the ground, it becomes a tornado and a force of destruction. Tornadoes are the most violent of all atmospheric storms and are capable of tremendous destruction. Wind speeds can exceed 250 miles per hour, and damage paths can be more than one mile wide and 50 miles long. Tornadoes have been known to lift and move objects weighing more than 300 tons 30 feet, toss homes more than 300 feet from their foundations, and siphon millions of tons of water from water bodies. Tornadoes also generate a tremendous amount of flying debris or "missiles," which often become airborne shrapnel that causes additional damage. If wind speeds are high enough, missiles can be thrown at a building with enough force to penetrate windows, roofs, and walls. However, the less spectacular damage is much more common. Windstorm: Windstorms for purposes of this plan refer to other non-tornadic damaging winds of thunderstorms including downbursts, microbursts, and straight-line winds. Downbursts are localized currents of air blasting down from a thunderstorm, which induce an outward burst of damaging wind on or near the ground. Microbursts are minimized downbursts covering an area of less than 2.5 miles across. They include a strong wind shear (a rapid change in the direction of wind over a short distance) near the surface. Microbursts may or may not include precipitation and can produce winds at speeds of more than 150 miles per hour. Straight-line winds are generally any thunderstorm wind that is not associated with rotation. It is these winds, which can exceed 100 mph, which represent the most common type of severe weather and are responsible for most wind damage related to thunderstorms. Since thunderstorms do not have narrow tracks like tornadoes, the associated wind damage can be extensive and affect entire (and multiple) counties. Objects like trees, barns, outbuildings, high -profile vehicles, and power lines/poles can be toppled or destroyed, and roofs, windows, and homes can be damaged as wind speeds increase. Strong winds can occur year-round in Iowa. These winds typically develop with strong pressure gradients and gusty frontal passages. The closer and stronger the two systems are, (one high pressure, one low pressure) the stronger the pressure gradient, and therefore, the stronger the winds are. Objects such as trees, barns, outbuildings, high -profile vehicles, and power Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 205 line/poles can be toppled or destroyed, and roofs, windows and homes can be damaged as wind speeds increase. Downbursts can be particularly dangerous to aviation. The NWS can issue High Wind Watch, High Wind Warning, and Wind Advisory to the public. The following are the definitions of these issuances: High Wind Watch —This is issued when there is the potential of high wind speeds developing that may pose a hazard or is life -threatening. High Wind Warning —The 1-minute surface winds of 35 knots (40 mph) or greater lasting for one hour or longer, or winds gusting to 50 knots (58 mph) or greater, regardless of duration, that are either expected or observed over land. • High Wind Advisory —This is issued when high wind speeds may pose a hazard. Sustained winds 25 to 39 mph and/or gusts to 57 mph. Geographic Location/Extent Iowa is in a part of the United States where tornadoes are a common occurrence. Iowa has experienced 1,928 tornadoes from 1980 through 2019 with 85 percent of them being rated EFO/EFU and EF1, and 15 percent rated F2 through F5. Only one F5 rated tornado has occurred in Iowa during this timeframe (Parkersburg in 2008). Since 1980, there have been on average 48 tornadoes per year in Iowa. Most tornadoes occurred in May and June but can occur during any month. Also, mid -afternoon until around sunset is the peak time of day for tornado activity. There have been 830 injuries and 30 deaths attributable to tornadoes (source: National Weather Service, Iowa Tornado Climatology Report 1980-2019). Tornadoes can occur in the entire planning area. Figure 3.63 illustrates the number of F3, F4, and F5 tornadoes recorded in the United States per 3,700 square miles between 1950 and 2006. Dubuque County is in the section with light orange and dark red shading, indicating 5 to over 15 tornadoes of this magnitude during this 57-year period. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 206 Figure 3.63. Tornado Activity in the United States and in Iowa Legend 7omado Risk Very High ■ Relatively High Relatively Moderate Relatively Low Very Low No Rating Not Applicable ■ Insufficient Data Expected Annual Loss . _iai vi 1--hiii- = Risk Index Legend I I Sioux Fall Tornado Risk i Very High s I� Relatively High Relatively — Moderate E) Relatively Low iVery Low AS I.] No Rat! ng I� NotApplieable; Insufficient Data Jl. .• tinColn Expected Annual Loss N Social Vulnerability = Community Resilience = Risk Index Source: https://statista.com Marrca + Mexico Havana Cuba Guadalajara I I la VV l' Des Moines �_..— . Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 207 Tornadoes are classified according to the EF Scale. The Enhanced F-Scale (Table 3.7.1) attempts to rank tornadoes according to wind speed based on the damage caused. This update to the original F scale was implemented in the U.S. on February 1, 2007. Table 3.71. Enhanced F Scale for Tornado Damage FUJITA SCALE DERIVED EF SCALE OPERATIONAL EF SCALE F Number Fastest 1/4-mile mph 3 Second Gust (mph) EF Number 3 Second Gust (mph) EF Number 3 Second Gust (mph) 0 40-72 45-78 0 65-85 0 65-85 1 73-112 79-117 1 86-109 1 86-110 2 113-157 118-161 2 110-137 2 111-135 3 158-207 162-209 3 138-167 3 136-165 4 208-260 210-261 4 168-199 4 166-200 5 261-318 262-317 5 200-234 5 Over200 Source: The National Weather Service. The wind speeds for the EF scale and damage descriptions are based on information on the NOAA Storm Prediction Center as listed in Table 3.72. The damage descriptions are summaries. For the actual EF scale, it is necessary to look up the damage indicator (type of structure damaged) and refer to the degrees of damage associated with that indicator. Information on the Enhanced Fujita Scale's damage indicators and degrees of damage as defined by NOAA. Table 3.72. Enhanced Fujita Scale with Potential Damage Enhanced Fujita Scale Wind Speed Relative Scale (mph) Frequency Potential Damage Light. Peels surface off some roofs; some damage to gutters or siding; branches broken off trees; shallow -rooted trees pushed over. Confirmed tornadoes with no reported damage (i.e., those EFO 65-85 53.5% that remain in open fields) are always rated EFO . Moderate. Roofs severely stripped; mobile homes overturned or badly damaged; loss of exterior doors; windows and other glass EF1 86-110 31.6% broken. Considerable. Roofs torn off well -constructed houses; foundations of frame homes shifted; mobile homes complete destroyed; large trees snapped or uprooted; light object missiles EF2 111-135 10.7% generated; cars lifted off ground. Severe. Entire stores of well -constructed houses destroyed; severe damage to large buildings such as shopping malls; trains overturned; trees debarked; heavy cars lifted off the ground and thrown; structures with weak foundations blown away some EF3 136-165 3.4% distance. Devastating. Well -constructed houses and whole frame houses EF4 166-200 0.7% completely levelled; cars thrown, and small missiles generated. Explosive. Strong frame houses levelled off foundations and swept away; automobile -sized missiles fly in excess of 300 ft.; steel reinforced concrete structure badly damaged; high rise buildings have significant structural EF5 >200 <0.1 % deformation; incredible phenomena will occur. Source: NOAA Storm Prediction Center All of Dubuque County is susceptible to high wind events. The County is in Wind Zone IV, Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 208 which is susceptible to winds up to 250 mph. All the participating jurisdictions are vulnerable to this hazard. Figurer 3.64 shows the wind zones of the United States based on maximum wind speeds; the entire state of Iowa is located within wind zone IV, the highest inland category. Figure 3.64. Wind Zones in the United States ten. ...,. ...ffi .mw 4 .a.. • w� 4+wF Z AL WIND ZONES IN THE UNITED STATES' 14 WINaZONES �!*% ZONE I ZONE 11 (160soir I q....y 14 OTSER CONSIGERA7IONS ZONE III y * NKriter5 $ Gp�lble RegiM ZON:: I + HAWAll* • O.�dpn wig Spav�i rnpariimg r�-iluru +E - 3.MXDnd gum - 33 ioffl ab ft grade Source: FEMA; Note: Black square indicates approximate location of Dubuque County (2011). The advancement in weather forecasting has provided for the ability to predict severe weather that is likely to produce tornadoes days in advance. Tornado watches can be delivered to those in the path of these storms several hours in advance. The lead time for actual tornado warnings is about 30 minutes. Tornadoes have been known to change paths very rapidly, thus limiting the time in which to take shelter. Tornadoes may not be visible on the ground if they occur after sundown or due to blowing dust or driving rain and hail. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 209 Previous Occurrences On August 10, 2020, a weather complex known as a "derecho" sent intense winds and thunderstorms over a 700-mile stretch from Nebraska to Indiana. Iowa was hit the hardest with three death and hundreds of thousands of people without power for days, during a heat and humidity wave. More than 40% of the state's corn and soybean crop, the core of Iowa's economy, was severely damaged by the storm, whose winds reached 110-140 mph, equivalent to those of a Category 3 or 4 hurricane. The Iowa event was sometimes referred to as an inland hurricane because of their extreme rainfall and winds that can exceed the hurricane threshold of 74 mph. The National Oceanic and Atmospheric Association (NOAA) defines a derecho as a widespread, long- lived wind storm associated with a band of rapidly moving showers or thunderstorms. Though the damage they can create can be like damage inflicted by tornadoes, there's a key difference: Unlike the spiraling winds and winding paths of twisters, derechos tend to move in one direction along a relatively straight line. Thus, their path of destruction is also relatively linear. "Meteorologists like me will often refer to this hazard as `straight-line wind damage,"' Marshall Shepherd , director of University of Georgia's Atmospheric Sciences Program, writes. Much like blizzards, he adds, derechos are defined by very specific criteria. For a storm to be considered one, it must have wind gusts at or greater than 58 mph, pockets of 75 mph or greater gusts, and cause a band of wind damage that is greater than 250 miles long. In the Eastern half of the United States, one derecho is expected to occur between every .75 and 4 years, depending on the location. Researchers are not yet sure whether climate change is affecting derechos or the frequency at which they occur. Warming global temperatures may inhibit the cooler temperature gradients that derecho-producing thunderstorms need to grow. What's more certain, NOAA states, is that climate change is causing the Jetstream to move toward the pole. So, it's likely that derechos will shift poleward in a warming world, too. Destruction to Iowa's homes, farms, businesses, livestock, and crops translates to a $4 billion hit. The storms associated with derechos can be arranged in a line and be accompanied by squalls of high wind and heavy rain (a "squall line") or like the curve of a boomerang (a "bow echo"), Shepherd writes. Collectively, squall lines, bow echoes, and other types of thunderstorms that act as a single system are called "mesoscale convective systems." On August 10 in Iowa, swaths of 90 to 100 mph winds may have been between 30 and 50 miles wide at times, radar signatures indicate. In Marshalltown, a community of 27,000 people northeast of Des Moines, a personal weather station measured a 106-mph gusthttps://www.pbs.org/wgbh/nova/article/derecho-wind-storm-iowa/ of wind, Matthew Cappucci reports for the Washington Post; in Midway, a town just north of Cedar Rapids, winds clocked in at an alarming 112 mph. Thousands of Iowans remained without power and dozens were in shelters as of Thursday, August 20. And then there's the damage to Iowa's agriculture, which approximately 90% of the state's land is dedicated to. Iowa has been the number -one corn producer in the United States for the past 26 years, and experts can't yet tell the extent of the derecho's destruction to this year's crop. Figure 58: Derecho Climatology Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 210 one derecho ; every4year5 — - `_ -'yK r' ne derecho' ; yery2year!W _ _ iderehos OnederechD 'very 3yearsevery year i Derecho Climatolog Odds of the ocorimence of dorechos in Me U_ S. Source: https://www.weather.gov/lmk/derecho The path of the derecho through Iowa was primarily along the 1-80 corridor that is the main interstate running west to east through the state. Delaware County, well north of 1-80, did not experience damage. Cedar County, directly to the south of Delaware County, approximately 70 miles away, received a Presidential Disaster declaration. Delaware county was mostly spared. TnrnaclnP.q According to NOAA statistics Dubuque County had 17 recorded tornado events from 1998 to 2023. Of these, one was an F4; one was an F2, seven were F1/EF1, and eight were FO/EFO. These tornadoes caused no fatalities, one injury, and over $28 million in property damages. Table 3.73 summarizes these events. Table 3.73. Recorded Tornadoes in Dubuque County, 1998 - 2023 Date Magnitude Deaths Injuries Property Damages Crop Damages Length Width 5/8/1988 F1 0 0 $2,500,000 $0 11 43 5/8/1988 FO 0 0 $25,000 $0 0.5 20 3/13/1990 F4 0 0 $25,000,000 $0 1 200 3/13/1990 F1 0 0 $25,000 $0 3 23 3/27/1991 F2 0 1 $250,000 $0 1 100 6/16/1996 FO 0 0 $0 $0 0.1 10 5/15/1998 FO 0 0 $200 $0 0.3 1 5/28/1998 FO 0 1 0 1 $0 1 $0 0.1 0.5 5/26/2007 EFO 0 0 $1,000 $0 0.75 50 5/25/2008 EF1 0 0 $250,000 $0 1.53 250 12/23/2015 EF1 0 0 $0 $0 1.1 25 7/23/2016 EFO 0 0 $0 $0 0.78 25 3/6/2017 EFO 0 0 $5,000 $0 5.46 25 8/5/2019 ER 0 0 $0 $0 0.3 50 3/28/2020 ER 0 0 $0 $0 3.8 50 6/20/2021 ER 0 0 $0 $0 1.68 30 8/11/2021 EFO 0 0 $0 $0 0.6 20 Source: NOAA Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 211 Figure 3.65. The map in Figure 3.65 shows the paths of the events in the table above. Note: Not all events had available latitude and longitude coordinates. As a result, not all events are displayed. _ r - .61 , { plattewl r '- Cas quid e r - - r� '• 151 _ 1r,� • r • f r mood rd j Ball 4o I ' ' CUE t - 11 ter Dyersville Du � Delhi � .57 r _ Gi �yY movicel lO O History 21 I , I - Ve Andrew Source: Torando Previous Occurrences According to the NCDC database, there were 11 high wind events in Dubuque County from 1998 to 2023. During this time, there we no injuries or deaths. There were no property damages. Recorded wind gusts ranged from a high of 60 knots to a low of 35 knots. Probability of Future Occurrence NOAA reported 24 tornadoes in Dubuque County in a 67-year time, which calculates to 36 percent chance of a tornado in any given year. Therefore, it is a high probability that some portion of Dubuque County will experience tornado activity in any given year. According to NCDC, there were 11 separate high wind events from 1993 to 2016 (24-year period) in Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 212 Dubuque County. Based on this data there is a 46 percent annual probability of high wind events in any given year. Therefore, the probability rating is "Highly Likely". Figure 3.66 below shows the probability of a windstorm event (65 knots or greater) in the U.S. The Dubuque County planning area is colored lime and dark green, showing that 65+ knot winds are probable to occur 1.00 to 1.50 times a year. Source: NSSL, Note: Blue square indicates approximate location of Dubuque County Vulnerability Overview Dubuque County is located just outside a region of the U.S. with high frequency of dangerous and destructive tornadoes and is referred to as "Tornado Alley". Figure 3.67 is based on areas where dangerous tornadoes are most likely to take place. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 213 Figure 3.67. Tornado Alley in the U.S. Table 3.75. Mobile Homes per Jurisdiction Light frame structures, such as mobile homes, outbuildings and sheds are considered especially vulnerable to damage from tornadoes. Those most at risk from tornadoes include people living in mobile homes, campgrounds, and other dwellings without secure foundations or basements. People in automobiles are also very vulnerable to twisters. Table 3.75 provides the number of mobile homes in each jurisdiction in Dubuque County according to the U.S. Census Bureau's 2020 US Census. In 2015, there were 2,240 mobile homes and in 2020, there are 2,517. Jurisdiction Number of Mobile Homes Dubuque County 1,538 Asbury 0 Balltown 0 Bankston 0 Bernard 6 Cascade 13 Centralia 6 Dubuque 910 Durango 0 Dyersville 10 Epworth 16 Farley 0 Graf 0 Holy Cross 0 Luxemburg 0 New Vienna 5 Peosta 0 Rickardsville 0 Sageville 9 Sherrill 0 Worthington 3 Zwingle 12 Source: U.S. Census 2020 The elderly (65 and older), young (less than 18 years old), and the physically and mentally Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 214 handicapped are most vulnerable because of the lack of mobility to escape the path of destruction. People who may not understand watches and warnings due to language barriers are also at risk. Potential Losses to Existing Development In Dubuque County, the NCDC estimate for past property damages resulting from tornadoes from 1998 - 2023 (25 years) was $256,000. This translates to an annualized loss of over $10,240. For windstorms, NCDC reports no property damages during this same time. Lnss of HsB Overhead power lines and infrastructure are also vulnerable to damages from windstorms. Potential losses would include the cost of repair or replacement of damaged facilities and lost economic opportunities for businesses. Public safety hazards include the risk of electrocution from downed power lines. Specific amounts of estimated losses are not available due to the complexity and multiple variables associated with this hazard. Refer to the electric power loss of use estimates provided in 0 in the Winter Storm hazard section. Crop Losses Crop insurance payments for wind damage are discussed in Section 3.5.17, Thunderstorms with Lightning and Hail. Future Development Public buildings such as schools, government offices, as well as other buildings with a high occupancy and mobile home parks should consider inclusion of a tornado saferoom to shelter occupants in the event of a tornado. Windstorm is primarily a public safety and economic concern, and the planning area is in a region with very high frequency of occurrence. Windstorm can cause damage to structures and power lines which in turn create hazardous conditions for people. Debris flying from high wind events can shatter windows in structures and vehicles and can harm people that are not adequately sheltered. Although windstorms occur frequently in the planning area and damages to property occurs, much of the damage is generally covered by private insurance. This results in less impact to individuals and the community since recovery is facilitated by insurance. Climate Change Impacts According to the 2010 Climate Change Impacts on Iowa report, growing evidence points to stronger summer storm systems in the Midwest. Studies have not been done to conclusively say that severe storms, including tornadoes, are increasing. However, with summer temperatures becoming warmer and humidity levels increasing, an increase in the likelihood of tornadic activity is plausible. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 215 3.5.19 Transportation Incident Hazard Score Calculation Probability Magnitude/Severity Warning Time Duration Weighted Score Level 3 1 4 2 2.45 Moderate Profile Hazard Description This hazard encompasses the following: air, rail, water, and highway transportation. The transportation incidents can involve any mode of transportation that directly threatens life, and which results in property damage and/or death(s)/injury(s) and/or adversely impact a community's capabilities to provide emergency services. Incidents involving buses and other high occupancy vehicles could trigger a response that exceeds the normal day-to-day capabilities of response agencies. An air transportation incident may involve a military, commercial or private aircraft. Air transportation is playing a more prominent role in transportation. Airplanes and helicopters are used to transport passengers for business and recreation as well as thousands of tons of cargo. A variety of circumstances can result in an air transportation incident; mechanical failure, pilot error, enemy attack, terrorism, weather conditions and on -board fire can all lead to an air transportation incident. Rail incidents include derailments, collisions, and highway/rail crossing incidents. Train incidents can result from a variety of causes: human error, mechanical failure, faulty signals, and/or problems with the track. Waterway incidents will primarily involve recreational craft on rivers and lakes. Water rescue events would largely be handled by first responding agencies. Waterway incidents may also include events in which a person, persons, or object falls through the ice on partially frozen bodies of water. Highway transportation incidents are very complex. Contributing factors can include a roadway's design and/or pavement conditions (e.g., rain, snow, and ice), a vehicle's mechanical condition (e.g., tires, brakes, lights), a driver's behavior (e.g., speeding, inattentiveness, and seat belt usage), the driver's condition (e.g., alcohol use, age -related conditions, physical impairment) and driver inattention by using a wireless device. In fact, the driver's behavior and condition factors are the primary cause in an estimated 67 percent of highway crashes and a contributing factor in an estimated 95 percent of all crashes. Geographic Location/Extent Highways/Roads Numerous major US and state highways run through Dubuque County. The City of Dubuque is the major hub for the four -lane US Highway 20 that runs east west through Dubuque County extending into Iowa and Illinois. Four -lane US Highway 61 extends north south from the City of Dubuque and extends into Wisconsin on the north and to the Quad Cities and beyond to the south. Four -lane US Highway 151 extends from the City of Dubuque and into Wisconsin on the north and to Cedar Rapids and beyond to the southwest. US Highway 52 runs north -south generally following the Mississippi River and extending north from Dubuque County through Iowa into Minnesota and to the south through Bellevue and Sabula before entering Illinois. The major highways are listed below: Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 216 • US Highway 20 • US Highway 52 • US Highway 61 • US Highway 151 • Iowa Highway 3 • Iowa Highway 32 • Iowa Highway 136 Numerous paved county roads connect all the incorporated cities and unincorporated towns throughout the county. Figure 3.21 in the Hazardous Materials Incident section shows the major highways in Dubuque County. According to the Iowa Department of Transportation, the total daily traffic in Dubuque County is 751,734 and the total daily truck traffic is 61,886. (Source: I DOT) Rail Transport The following railroads operate in Dubuque County: Canadian Pacific Railroad (CP), Dakota, Minnesota and Eastern (DME) R.R. Company, Canadian National Railway Company. Burlington Northern Sante Fe Railroad has a line (in red) that runs down the Illinois side of the Mississippi River adjacent to Dubuque County. Figure 3.22 in the Hazardous Materials Incident section shows the railroads that operate in Dubuque County. Previous Occurrences Air Transport The Dubuque Regional Airport is located south of the City of Dubuque (see Figure 3.23). There are also three private airports: Dyersville Area Airport, Kleis Airport (Zwingle) and Anderson Airport (near Graf). The Dubuque Regional airport, constructed in 1948, is owned by the City of Dubuque and is located six miles south of Dubuque. Regional access to the airport is from U.S. Highway 61. An airport commission was established by the city to manage the airport. The FAA recognizes the airport as playing a role in the national airport system and includes the airport in the National Plan of Integrated Airport Systems (NPIAS) as a non -hub primary commercial service airport. (A non -hub airport is one that enplanes more than 10,000, but less than 0.05 percent of the total U.S. passengers.) The Iowa Aviation System Plan identifies the Dubuque Regional Airport as a Commercial Service airport. Commercial Service airports support scheduled airline service and have the infrastructure and services available to support a full range of general aviation activity. Air Transportation Incidents: Table 3.76 provides details of air transportation incidents in Dubuque County from 1967 to 2023 (57 years) from the National Transportation Safety Board (NTSB). Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 217 Table 3.76. Dubuque County Aircraft Incidents/Accidents (1967-2023) Event Date Location Airport Name Injury Severity Aircraft Damage Make Broad Phase of Flight 12/20/2021 Dubuque, IA Dubuque Regional Airport Non -Fatal Substantial Textron Aviation Cruise 10/13/2014 Dubuque, IA Dubuque Regional Airport Fatal (1) Destroyed Piper Go -Around 04/03/2011 Dubuque, IA Dubuque Regional Airport Incident Minor Embraer Taxi 07/28/2010 Zwingle, IA Not Reported Non -Fatal Substantial Air Tractor Inc Maneuvering 03/08/2004 Dubuque, IA Dubuque Regional Non -Fatal Substantial Cessna Go -Around 03/28/2003 New Vienna, IA Not Reported Fatal (3) Destroyed Beech Cruise 08/06/2002 Dyersville, IA Dyersville Area Airport Non -Fatal Substantial Cessna Approach 03/20/2002 Cascade, IA Not Reported Non -Fatal Substantial Schweitzer Maneuvering 10/23/2001 Dubuque, IA Dubuque Regional Airport Fatal (1) Destroyed Beech Approach 04/09/1999 Dubuque, IA Not Reported Incident Not Reported McDonnell Douglas Cruise 12/17/1998 Sherrill, IA Not Reported Fatal (1) Destroyed Cessna Cruise 07/13/1998 Dyersville, IA Not Reported Non -Fatal Substantial Canadian Car & Foundry Takeoff 07/25/1996 Dubuque, IA Dubuque Regional Airport Non -Fatal Substantial Cessna Landing 04/29/1996 Bernard, IA Not Reported Fatal (3) Destroyed Cessna Cruise 10/18/1995 Peosta, IA Not Reported Non -Fatal Substantial Cessna Cruise 03/25/1994 Dubuque, IA Dubuque Regional Non -Fatal Substantial Cessna Landing 12/05/1993 Dubuque, IA Dubuque Municipal Non -Fatal Substantial Cessna Approach 04/19/1993 Zwingle, IA Dubuque Regional Fatal (8) Destroyed Mitsubishi Cruise 06/27/1992 Dubuque, IA Not Reported Non -Fatal Substantial Bell Landing 05/15/1990 Dubuque, IA Dubuque Non -Fatal Substantial Piper Approach 07/29/1988 Dubuque, IA Dubuque Non -Fatal Substantial Shirlene Dickey Cruise 09/29/1987 Dubuque, IA Dubuque Non -Fatal Substantial Cessna Cruise 12/30/1985 Dubuque, IA Dubuque Municipal Non -Fatal Substantial Beech Landing 07/01/1984 Dyersville, IA Dyersville Non -Fatal Substantial Cessna Takeoff 05/18/1984 Dubuque, IA Not Reported Non -Fatal Substantial Piper Maneuvering 12/24/1982 Dubuque, IA Not Reported Fatal (2) Destroyed Piper Approach 11/16/1982 Dubuque, IA Dubuque Muni Non -Fatal Substantial Cessna Landing 04/24/1982 Dubuque, IA Dubuque Municipal Non -Fatal Substantial Piper Landing 07/21/1977 Dubuque, IA Not Reported Non -Fatal Not Reported Cessna Not Reported 05/30/1976 New Vienna, IA Not Reported Non -Fatal Not Reported Piper Not Reported 12/22/1974 Graf, IA Not Reported Non -Fatal Not Reported Aeronca Not Reported 07/22/1974 Dubuque, IA Not Reported Fatal (1) Not Reported Piper Not Reported 03/20/1974 Dubuque, IA Not Reported Non -Fatal Not Reported Piper Not Reported 10/21/1972 Dubuque, IA Not Reported Fatal (2) Not Reported Piper Not Reported 11/17/1971 Dubuque, IA Not Reported Non -Fatal Not Reported Piper Not Reported 07/03/1971 Dubuque, IA Not Reported Non -Fatal Not Reported Mooney Not Reported 10/28/1970 Dubuque, IA Not Reported Incident Not Reported Boeing Not Reported 07/24/1969 Epworth, IA Not Reported Non -Fatal Not Reported Piper Not Reported 02/07/1969 Dubuque, IA Not Reported Non -Fatal Not Reported Piper Not Reported 10/31/1968 Dubuque, IA Not Reported Non -Fatal Not Reported Piper Not Reported 05/26/1968 Dubuque, IA Not Reported Fatal (2) Not Reported Stinson Not Reported 04/09/1968 Dubuque, IA Not Reported Non -Fatal Not Reported Beech Not Reported 01/30/1968 Dubuque, IA Not Reported Non -Fatal Not Reported Cessna Not Reported 05/13/1967 Dubuque, IA Not Reported Non -Fatal Not Reported Beech Not Reported 04/14/1967 Dubuque, IA Not Reported Non -Fatal Not Reported Cessna Not Reported Source: National Transportation Safety Board. Highway Transportation Incidents: The Iowa Department of Transportation's Office of Traffic and Safety maintains traffic crash statistics and location maps by county and cities in Iowa. Table 3.77 shows the reportable crash Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 218 history for urban crashes in Dubuque County, Iowa from 2013 -2022. Table 3.78 that follows shows the reportable crash history for rural crashes in Dubuque County for the same time. Table 3.77. Dubuque County Urban Crashes 2013 - 2022 Year Crash Counts/Classification Crashes Fatal Major Minor Poss/Unk Injury/Fatality Counts/Classification Injuries Fatalities Major Minor Possible Unknown 2013 377 1 15 43 38 134 1 17 56 53 7 2014 351 3 9 34 46 127 6 12 46 53 10 2015 367 2 7 41 45 122 2 9 47 63 1 2016 349 3 13 30 52 136 3 18 36 75 4 2017 1561 6 10 105 239 454 6 10 128 298 12 2018 1583 1 9 118 252 484 1 9 140 321 13 2019 1698 3 11 122 261 506 3 11 143 335 14 2020 1351 2 12 110 207 413 2 14 136 242 19 2021 1487 1 9 126 238 481 1 11 146 299 24 2022 1568 5 15 134 243 512 7 18 159 276 52 Total 15489 26 108 1126 2385 4626 28 124 1343 3131 Source: Iowa Department of Transportation's Office of Traffic and Safety Table 3.78. Dubuque County Rural Crashes 2013 - 2022 Crash Counts/Classification Injury/Fatality Counts/Classification Year Crashes Fatal Major Minor Poss/Unk Injuries Fatalities Major Minor Possible Unknown 2013 377 1 15 43 38 134 1 17 56 53 7 2014 351 3 9 34 46 127 6 12 46 53 10 2015 367 2 7 41 45 122 2 9 47 63 1 2016 349 3 13 30 52 136 3 18 36 75 4 2017 401 4 8 36 46 133 4 8 54 63 4 2018 466 5 8 47 53 159 5 12 58 81 3 2019 451 5 17 43 57 155 5 21 54 69 6 2020 425 1 8 37 48 122 1 8 46 62 5 2021 460 3 14 39 46 129 3 15 48 59 4 2022 386 4 9 31 42 105 5 12 40 46 2 Total 4033 31 108 381 473 1322 35 132 485 670 Source: Iowa Department of Transportation's Office of Traffic and Safety Probability of Future Occurrence A major transportation incident can occur at any time, even though traffic engineering, inspection of traffic facilities and land use management of areas adjacent to roads and highways has increased, incidents continue to occur. The combination of cars and trucks, farm equipment, wildlife, unpredictable weather conditions, potential mechanical problems and human error always leaves the potential for a transportation accident. Vulnerability Overview Transportation incidents can almost always be expected to occur in specific areas, on or near airports, roadways, or other transportation infrastructure. The exception is air transportation incidents, which can occur anywhere. However, it is difficult to predict the magnitude of any specific event because these types of events are accidental and the circumstances surrounding Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 219 these events will impact the extent of damage or injuries that occur. The number of urban and rural highway/roadway transportation accidents from 2013 — 2022 was a total of 19,522 crashes during this 10-year time (average nearly 2,000 per year). Fifty-seven (57) fatalities occurred during this time (averaging nearly six per year). Transportation incident has resulted in the most deaths historically in the county compared to other hazards. Potential Losses to Existing Development The U.S. Department of Transportation Federal Highway Administration issued a technical advisory in 1994 providing suggested estimates of the cost of traffic crashes to be used for planning purposes. These figures were converted from 1994 dollars to 2023 dollars using an annual inflation rate of 2.85 percent. The costs are listed below in Table 3.79. Table 3.79. Costs of a Traffic Crash Severity Cost per injury (in 2016 dollars $) Fatal $5,320,397 Evident Injury d $73,677 Possible Injury $38,880 Property Damage Only $4,093 Source: U.S. Department of Transportation Federal Highway Administration Technical Advisory T 7570.2, 1994. Adjusted to 2023 dollars. Using the traffic crash costs per type of severity from Table 3.79 and combining major and minor injuries as "evident injury" and possible and unknown as "possible injury" the total costs of traffic crashes is figured in Table 3.80 for Dubuque County based on previous events. Table 3.80. Costs of Traffic Crashes in Dubuque County 2016 - 2022 Urban/Rural Fatalities Evident Injury Possible Property Total Injury Damage Urban 28 120 1342 11833 Rural 35 134 486 3050 Total 63 254 1828 14883 Estimated $335,185,011 $18,711,418 $71,072,640 $60,916,119 $485,885,188 Cost Sources: U.S. Department of Transportation Federal Highway Administration Technical Advisory T 7570.2, 1994. Adjusted to 2023 dollars and Iowa Department of Transportation's Office of Traffic and Safety. Based on the 10 years of data, the annual average cost of transportation accidents in Dubuque County is $485,885,188. Estimated losses from rail and air transportation are not available for this analysis. Future Development Current population trends indicate an increase in population in Dubuque County. If the volume of traffic on the county roads, highways and interstates increases with population increase, the number of traffic accidents will likely also increase. Climate Change Impact If projections regarding milder winters come to fruition, climate change impacts may reduce the number of transportation incidents associated with some severe weather. However, if ice occurs, rather than snow, this could result in higher incidents of weather -related accidents. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 220 3.6 Hazard Analysis Summary This table below provides a tabular summary of the hazard ranking for each jurisdiction in the planning area. Table 3.81. Hazard Ranking Summary by Jurisdiction SZ L_ (a Gi E L I.L L r d U_ a .0+ V% _ O N C i d CO d R •+ L f0 C R d 3 d > d 0 O 0 N N G O .. 4), V O C y I= _ ,00 >n i6 11 r •� d O .� 3 FL 0 L E T 7 L N f0 to >4 O_ 'a L d i Y w L IC i N 0 Jurisdiction y 'p O = w r.+ w R 0 L N =� _ w 0 R > d m 7 s� o i 0 0 � C7 � _J 0� W Cn N H H _J H H Dubuque County, Iowa L H M L M H L M M M L L MH M L L H H M Asbury L N/A M L M H L M M M L L L M L L H H M Balltown L N/A M L M M L M M M L L N/A M L L H H M Bankston L N/A M L M M L M M M L L N/A M L L H H M Bernard L N/A M L M M L M M M L L L M L L H H M Cascade L H M L M H L M M M L L H M L L H H M Centralia L N/A M L M H L M M M L L N/A M L L H H M Dubuque L H M L M H L M M M M L H M M L H H M Durango L N/A M L M H L M M M L L M H M L H H M Dyersville L N/A M L M H L M M M L L H M L L H H M Epworth L N/A M L M M L M M M L L L M L L H H M Farley L N/A M L M H L M M M L L L M L L H H M Graf L N/A M L M M L M M M L L M M L L H H M Holy Cross L N/A M L M H L M M M L L N/A M L L H H M Luxemburg L N/A M L M M L M M M L L L M L L H H M New Vienna L N/A M L M H L M M M L L M M L L H H M Peosta L N/A M L M H L M M M L L L M L L H H M Rickardsville L N/A M L M M L M M M L L M M L L H H M Sageville L N/A M L M H L M M M L L M M L L H H M Sherrill L N/A M L M M L M M M L L N/A M L L H H M Worthington L N/A M L M H L M M M L L M M L L H H M Zwingle L N/A M L M H L M M M L L M M L L H H M Dubuque CSD L H M L M M L M M M L L N/A M L L H H M Western Dubuque CSD L N/A M L M M L M M M L L H M L L H H M NICC L H M L M H L M M M L L H M L L H H M Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 221 4 MITIGATION STRATEGY 44 CFR Requirement §201.6(c)(3): The plan shall include a mitigation strategy that provides the jurisdiction's blueprint for reducing the potential losses identified in the risk assessment, based on existing authorities, policies, programs and resources, and its ability to expand on and improve these existing tools. This section presents the mitigation strategy updated by the Hazard Mitigation Planning Committee (HMPC) based on the updated risk assessment. The mitigation strategy was developed through a collaborative group process and consists of updated general goal statements to guide the jurisdictions in efforts to lessen disaster impacts as well as specific mitigation actions that can be put in place to directly reduce vulnerability to hazards and losses. The following definitions are based upon those found in the March 2013 Local Mitigation Planning Handbook: • Goals are general guidelines that explain what the community wants to achieve with the plan. They are usually broad policy -type statements that are long-term, and they represent visions for reducing or avoiding losses from the identified hazards. • Mitigation Actions are specific actions that help achieve goals. 4.1 Goals 44 CFR Requirement §201.6(c)(3)(i): [The hazard mitigation strategy shall include a] description of mitigation goals to reduce or avoid long-term vulnerabilities to the identified hazards. This planning effort is an update to an existing hazard mitigation plan. Therefore, the goals from the 2019 Dubuque County Hazard Mitigation Plan were reviewed to determine if they are still valid. The HMPC participated in a facilitated discussion during their second meeting to review and update the plan goals. To ensure that the goals are comprehensive and support State goals, the 2018 State Hazard Mitigation Plan goals were reviewed as well. The HMPC also reviewed common categories of mitigation goals from other plans. The revised goals for this plan update are provided below: • Goal 1: Increase capabilities within Dubuque County entities to mitigate the effects of hazards by enhancing existing or designing and adopting new policies that will reduce damaging effects of hazards. • Goal 2: Protect the most vulnerable populations, buildings, and critical facilities within Dubuque County through the implementation of cost effective and technically feasible mitigation projects. • Goal 3: Improve the level of responder, government, business and citizen awareness and preparedness for disasters. • Goal 4: Develop programs to ensure that response agencies, governments, educational institutions, and local businesses can operate during times of disaster. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 224 4.2 Identification and Analysis of Mitigation Actions 44 CFR Requirement §201.6(c)(3)(ii): The mitigation strategy shall include a section that identifies and analyzes a comprehensive range of specific mitigation actions and projects being considered to reduce the effects of each hazard, with particular emphasis on new and existing buildings and infrastructure. During the second meeting of the HMPC, sample results of the risk assessment update were provided to the HMPC members. Additionally, the full draft of the Risk Assessment Chapter was provided for review by the HMPC members and to lay the framework for the impacts to be addressed by the updated mitigation strategy. Also at meeting #2, each jurisdiction was provided with a handout listing the actions they included in the previous hazard mitigation plan. The mitigation strategy of the previous plan consisted of 422 individual jurisdictional actions. Jurisdictional representatives were instructed to work with others in their jurisdiction to update the status of each of the previous actions. The status updates were provided between meeting #2 and meeting #3. The list of the completed and deleted actions is provided in Appendix C with comments providing additional details, as available. For a comprehensive range of mitigation actions to consider, the jurisdictions were provided relevant information and sources to be used in development of new mitigation actions including: • Plan Goals • Previous Actions from 2019 Plan • Key Issues from Risk Assessment • FEMA's Mitigation Ideas booklet • State Priorities for Hazard Mitigation Assistance Grants • Public Opinion from Surveys To facilitate discussion and ideas on new actions that jurisdictions may want to submit to the plan update, the planning committee reviewed the plan goals that were updated at meeting #2. Key issues/problem statements for the hazards in the risk assessment were discussed as well as the actions from the 2019 plan that were identified relative to each hazard. The discussion was geared toward identifying any gaps that may exist between the problems identified and actions already developed to address the problems. To provide consideration of a comprehensive range of alternatives, FEMA's Mitigation Ideas Booklet was also reviewed for additional ideas/alternatives for new actions. After the committee meeting, jurisdictions reviewed the materials to determine final mitigation actions to submit to the plan update. The jurisdictions were encouraged to be comprehensive and include all appropriate actions to work toward becoming more disaster resistant. They were encouraged to maintain a realistic approach and were reminded that the hazard mitigation plan is a "living document". As capabilities, vulnerabilities, or the nature of hazards that threaten each jurisdiction change, the mitigation actions can and should be updated to reflect those changes, including addition or deletion of actions, as appropriate. As part of the meeting discussion, jurisdictions were instructed to consider the potential cost of each project in relation to the anticipated future cost savings. This type of discussion allowed the Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 225 committee to understand the broad priorities and enable discussion of the types of projects most beneficial to all jurisdictions within Dubuque County. 4.3 Implementation of Mitigation Actions 44 CFR Requirement §201.6(c)(3)(ii): The mitigation strategy shall include an action strategy describing how the actions identified in paragraph (c)(2)(ii) will be prioritized, implemented, and administered by the local jurisdiction. Prioritization shall include a special emphasis on the extent to which benefits are maximized according to a cost benefit review of the proposed projects and their associated costs. Jurisdictional representatives worked with others in their community to finalize the actions to be submitted to the updated mitigation strategy. Throughout the discussion of the types of projects that the committee would include in the mitigation plan, emphasis was placed on the importance of a benefit -cost analysis in determining project priority. The Disaster Mitigation Act regulations state that benefit -cost review is the primary method by which mitigation projects should be prioritized. Recognizing the federal regulatory requirement to prioritize by benefit- cost, and the need for any publicly funded project to be cost-effective, the HMPC decided to pursue implementation according to when and where damage occurs, available funding, political will, jurisdictional priority, and priorities identified in the Iowa State Hazard Mitigation Plan. Due to many variables that must be examined during project development, the benefit/cost review at the planning stage primarily consisted of a qualitative analysis. For each action, the jurisdictions included a narrative describing the types of benefits that could be realized with implementation of the action. Where possible, the cost was estimated as closely as possible with further refinement to occur as project development occurs. Cost-effectiveness will be considered in additional detail if/when seeking FEMA Hazard Mitigation Assistance grant funding or other grant funding for eligible projects identified in this plan. At that time, additional information will be researched to provide a quantitative benefit -cost analysis. To provide a mechanism for jurisdictions to prioritize actions, a modified STAPLEE worksheet was completed by the jurisdictions for each new and continued action submitted for the updated mitigation strategy. The modified STAPLEE worksheet includes elements to consider protection of life and reduction of damages. Although the STAPLEE method was a component of the prioritization method utilized for the 2019 plan, there were other scoring elements included. For the plan update, the modified STAPLEE worksheet was chosen to re-evaluate all continuing and new actions as this was deemed a more simplified approach and avoided some redundancies and double counting of benefits that could occur with the previous method. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 226 The STAPLEE prioritization method in general is a tool used to assess the costs and benefits, and overall feasibility of mitigation actions. STAPLEE stands for the following: • Social: Will the action be acceptable to the community? Could it have an unfair effect on a particular segment of the population? • Technical: Is the action technically feasible? Are there secondary impacts? Does it offer a long-term solution? • Administrative: Are there adequate staffing, funding, and maintenance capabilities to implement the project? • Political: Will there be adequate political and public support for the project? • Legal: Does your jurisdiction have the legal authority to implement the action? • Economic: Is the action cost -beneficial? Is there funding available? Will the action contribute to the local economy? • Environmental: Will there be negative environmental consequences from the action? Does it comply with environmental regulations? Is it consistent with community environmental goals? Additional questions were added to the modified STAPLEE worksheet to include elements to consider protection of historic properties and time to implement as well as elements to consider mitigation effectiveness related to protection of life and reduction of damages. Figure 4.1 is a sample of the Action Plan worksheet. The Prioritization Sections at the bottom of the worksheet. There is a total possible prioritization score of 19. Those actions that scored 13 or Higher were given a priority rating of "High". Those actions that scored 7-12 were given a priority rating of "Medium". And those actions that scored less than 7 were given a rating of "Low". Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 227 Figure 4.1. Action Plan Worksheet Dubuque County Multi-Junsdiofional Hazard Mitigation Plan Mitigation Action Plan Worksheet Jurisdiction. OurrentAction Status Action Id: 0 Continue Not Starbad Refer to handoul for continuing actions 0 Continue In -Progress For new actions number with next se- Neva quentiel number after last action #. Hazards Addressed: I Check all that apply 0 Anima4Plent'Cmp Disease 0 Gra{t::r," lano Fire Se-:are'-'.°-fberStiirm 0 dam.Levee Failure I 0 Ha2s',= s `.'aierials Incident �irl:l c as 0 drought 0 Human E, sease Te --onsm D Earthquake ; D Infrastn.=-ureFailure TI-uncerstomroLightning&Hail 0 Extreme Heat 0 Radidogica Incident Tomackx-Windstcm 0 Flash Flood I 0 River Flaooing Transpatation InDident Action Title) Description: Applicable Goal Statement Oaal 1: Goa12: Gael 3 Goal 4- Check one IssuefBackground: Why is this action needed? 'i chat is theproblem? Obstacles to Im Iemen6n ? Responsible Off ce: h' dapartrrrn-i� .. i=ci:-=- Muld implernentir-k' Partners: Vr'hawould help? Potential Funding Source: FEMA Hlezard Mitigation Assistance Graft 41-WIR, PI orFNK {GranL-speaflo-if known, local 0 Local funds 0 In-IGnd (dorntedj funds, cambnatian, eia) 0 private Nan -Profit, OClher (specify) Check all Thai may apply Cast Estimate: LdIe or m Dort Less then $10,OCt] $10,GD0 to $9D,00D 0 $5D. DOG to $1 DO,Ot70 Q $100,000 to SE013.9D0 MEDD,DOD to $1 SDO,DDD Over $1,00D.D00 Benefits: (6esrribe Losses Avddedj Timeline: 1 yr More than 5 yrs. Completed by: (namptftkerphone #) HDa many years to wrapleie? 0 2-3 y,s 0 0ther 5 Prioritization Mitigation Effectiveness: it imp , ua trie wbon result n IrLIP3 ssn Rate the quesficns from D-3 If implemented, ivi the action result n reduced property daraags? 0 G. 0 1, 0 22, 0 3 Ckunlikely, 1-maybe, If imp6Tr=nted, will the action reduce the need far response artkmr,? 0 0, 0 1.13 2.13 3 2-probably, or 3-definitely If implemented, will the benefits emeed the bast? 0 0, 0 1, 0 P, 0 3 STAPLEE Rating: Give the Socially Ar eptable U +, 0. U - action a raling for each ele- Technically Feasible 0 +, 0 O, 0 - ment as fdkaws: Administralive Capability 13 +, 0 O, 0 - PditicAl,j Desirable 0 i, 0 O, 0 - Positive f+) Legal Authcrity Exists 0 +, 0 a, 0 - Neutrsl (0) Economically Beriefcisl 0 +, 0 O, 0 - Negative (-j Environmentally Beneficial 0 i, 0 [[,[3 - Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 228 The mitigation action summary table presenting the summary of continuing and new mitigation actions for each jurisdiction is provided in Table 4.1. In addition to the 294 actions that were continued from the previous plan, 16 new actions were identified, for a combined total of 310 actions in this updated mitigation strategy. The Action ID for each action has been carried over from the 2019 plan for continuing actions. Completed and deleted actions were moved to Appendix C. New actions were assigned the next sequential Action ID for each jurisdiction. Following the action summary table, additional details are provided for each continuing and new action in Table 4.2. The detailed table serves as the action plan describing how each action will be implemented and administered by the local jurisdiction. The final table, Table 4.3, provides the results from the action prioritization. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 229 Table 4.1. Mitigation Action Summary —Continuing and New Actions H=High, M=Medium, L=Low 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Unincorporated Provide backup power generators and wiring for Continue In -Progress Ongoing 2 M County - 1 critical facilities. Unincorporated Obtain NOAA weather radios for every home in Continue Not Started As grant funding is available 2 M County - 2 Dubuque County. Unincorporated Purchase barricades and signage as deemed Continue In -Progress As funding becomes available 2 M County - 3 necessary to better communicate information. Unincorporated Train personnel as weather spotters. Continue In -Progress Classes offered each spring -new employees are 4 M County - 4 encouraged to attend Unincorporated Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H County - 5 weather through newsletters, public notices, social media, and texts. Unincorporated Consider building a tornado safe room for all new Continue Not Started As needed and funding is available 2 M County - 6 construction. Unincorporated Maintain NFIP membership and meet all program Continue In -Progress Ongoing 1 M County - 7 requirements. Unincorporated Acquire permanent and portable generators and Continue Not Started As grant funding is available 2 L County - 8 infrastructure necessary to operate generators as deemed necessary by the County to provide power in the event of a power failure. Unincorporated Maintain the Business Continuity Plan to address Continue Not Started Staff time and no local funding 4 M County - 9 day-to-day County business operations. Unincorporated Continue to enforce the Floodplain Ordinances and Continue In -Progress Ongoing by staff from the zoning department 1 H County - 10 monitor all construction activities that are in or near a floodplain. Unincorporated Continue to support the efforts of the COG in their Continue In -Progress Some property acquisition complete but other 1 H County — 11 mitigation actions to reduce flooding of the Little homes are still in harm's way - local funding not Maquoketa River basin. available Unincorporated Continue to support the efforts of the NRCS in Dubuque Continue In -Progress Always ongoing staff efforts 1 H County — 12 County to reduce flooding in flood prone areas and provision of educational information to farmers and use of BMPs. Unincorporated Continue to maintain, promote, and administer storm Continue In -Progress Ongoing by staff from the zoning department 1 H County — 13 water retention ordinances with other jurisdictions and update as needed. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 230 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Unincorporated Continue to identify probable areas for potential hazards, Continue Not Started Staff time and no local funding 2 M County - 14 assess traffic capacity of highways and roads, and identify shelters for the hazards and develop best routes for evacuations. Unincorporated Continue to maintain awareness of repetitive loss Continue In -Progress Some property acquisition complete but other 3 H County - 15 properties to identify potential areas of risk to life and homes are still in harm's way - local funding not safety of residents and consider pursuing grant funds for available the acquisition and demolition of these properties. Unincorporated Continue public awareness campaign, including Continue In -Progress As needed and requested 3 H County - 16 educational programming, marketing, and public service announcements, and advertising to inform the public regarding the proper procedure during a flood. Unincorporated Modify the Flood Plain Management Ordinance as Continue In -Progress Ongoing 1 H County - 17 necessary with a target of alleviating flooding. Unincorporated Purchase more barriers and floodgates to better block Continue Not Started No local funding available 2 H County - 18 and inform drivers of flooded areas. Unincorporated Install river gauges and/or river stream sensors to Continue Not Started No local funding available 2 M County - 19 measure the height of water and better enable the County to monitor river levels and potential flooding. Unincorporated Maintain Community Alert Network system that Continue In -Progress Alert Iowa 3 H County - 20 includes the auto -dial potential for all households and businesses in the line of a severe storm. Unincorporated Continue program to educate residents on NOAA Continue Not Started No local funding available 3 H County - 21 indoor weather radios and provide a rebate program for a portion of the purchase price for residents or distribute as available. Unincorporated Continue to monitor public roads of concern that may Continue In -Progress Identify projects as necessary 2 M County - 22 require maintenance or rebuilding and repair or rebuild as deemed necessary. Unincorporated Maintain, enhance, or install GIS System to better Continue In -Progress Updates as needed 2 M County - 23 track critical facilities and vulnerable populations as well as respond to emergencies. Unincorporated Maintain procedure to backup all critical data to prevent Continue In -Progress County developed an IT Superintendent in 2015 3 M County - 24 loss in the event of hazard. and allocates money to ensure data is accessible Unincorporated Buy out, acquire, and demolish damaged, vulnerable, or Continue In -Progress As needed 1 H County - 25 endangered structures Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 231 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New) Unincorporated Move 911 Dispatch Center to new, larger location. New BOS has agreed to move and working on funding 2 H County — 26 agreements. Unincorporated Purchase and install snow plow cameras. New 2 L County — 26 Unincorporated River and creek restoration to reduce flood impacts and New 1 H County — 27 damages. Asbury -1 Provide backup power generators and wiring for Continue In -Progress Ongoing 2 M critical facilities. Asbury - 2 Add lift stations, increase/reinforce culvert size, and add Continue In -Progress Ongoing/Re-worded. 2 L curb and gutters to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Asbury - 3 Continue to maintain existing outdoor warning siren Continue In -Progress Ongoing 2 H systems and ensure appropriate coverage for population. Asbury — 4 Utilize barricades and signage as deemed necessary Continue In -Progress Ongoing 2 M to better communicate information. Asbury — 5 City personnel are trained as weather spotters. Continue In -Progress Ongoing 4 M Asbury — 6 Continue to improve public awareness of hazardous Continue In -Progress Ongoing/Re-worded. 3 H weather through newsletters, social media, and public service announcements. Asbury — 7 Continue to add needed infrastructure to mitigate flood Continue In -Progress 2 H damage. Asbury — 8 Continue to maintain snow removal policy, including no Continue In -Progress 1 M parking on city streets within 48 hours of a severe winter storm. Asbury — 9 Continue to make the library available as a shelter space to Continue In -Progress 4 H persons in need on a temporary basis during periods of extreme heat. Asbury — 10 Maintain NFIP membership and meet all program Continue In -Progress 1 M requirements. Asbury — 11 Continue to use City Hall as a storm shelter and to Continue In -Progress Recently built new city hall but no safe room. 1 H consider building a safe room. Asbury — 13 Build new lift stations with generators in place as Continue Not Started 2 M determined by the City's continued growth. Asbury — 14 Maintain procedure to backup all critical data to prevent Continue In -Progress 3 M loss in the event of hazard. Asbury — 15 Refrain from issuing burn permits in times of extreme Continue In -Progress 1 H heat or drought to prevent fires. Asbury — 16 Maintain, enhance, or install GIS System to better Continue In -Progress 2 M track critical facilities and vulnerable populations as well as respond to emergencies. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 232 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Balltown — 1 Obtain NOAA weather radios for every home in Continue Not Started Looking into funding 2 M Dubuque County. Balltown - 2 Create and maintain call down list of all critical Continue In -Progress Determine a call down list 3 M personnel. Balltown - 3 Maintain procedure to backup all critical data to prevent Continue In -Progress Have a plan and way we are doing it 3 M loss in the event of hazard. Balltown — 4 Join and maintain NFIP membership New Have joined and will continue membership. Balltown — 5 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, social media, and texts. Bankston - 1 Reconnect the city's weather siren. Continue Not Started No local funding available - investigate grants and 3 H funding sources to acquire a siren Bankston — 2 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, social media, and texts. Bernard - 1 Purchase or elevate structures, add lift stations, Continue In -Progress The city continues to keep up streets and storm 2 L increase/reinforce culvert size, and add curb and gutter sewers. Making sure any wash outs or undermining to streets in areas in flood zones with severe and is controlled Currently applied for a Grant to work repetitive flood damage to prevent reoccurrence. on the main street in town Bernard - 2 Continue to maintain existing outdoor warning siren Continue In -Progress Warning siren is checked monthly and can be set 2 H systems and ensure appropriate coverage for off by Bernard Fire and Dubuque population. County. Siren is inspected and checked monthly Bernard - 3 Obtain NOAA weather radios for every home in Continue In -Progress Weather Radios were distributed over 5 yrs. ago 2 M Dubuque County. may need to update and reprog5am to make sure they are working properly and make sure all new homes have one Bernard - 4 Purchase barricades and signage as deemed Continue In -Progress City needs to get signage we have limited 2 M necessary to better communicate information. signage. Available are cones and some signage from Bernard Fire. Bernard - 5 Train personnel as weather spotters. Continue Not Started Bernard Fire and Rescue controls and warns the 4 M city residents with the Siren provided by the city. Bernard - 6 Continue to improve public awareness of hazardous Continue In -Progress Create a calendar yearly to update customers of 3 H weather through newsletters, public notices, strolling public notices, remind citizens where to go for signs, etc. shelter and who to contact when an emergency occurs, Bernard - 7 Continue to add needed infrastructure to mitigate flood Continue In -Progress Need to be prepared for any flooding, generally not 2 H damage. an issue. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 233 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Bernard - 8 Consider building a tornado safe room for all new Continue Not Started The city currently needs a safe room for severe 2 M construction. storms and tornado and other storm conditions. Bernard - 9 Develop resources to protect people & property from Continue — Not Started 2 H hazardous materials Bernard - 10 Identify a location for public shelter in the event of a Continue — In -Progress Ongoing 2 H hazard or disaster, and stock it to ensure adequate for use as a shelter Bernard — 11 Prepare for flash flooding through physical diversion, Continue — Not Started 2 H maintenance, and other activities to reduce water collection load Bernard — 12 Maintain NFIP membership and meet all program Continue In -Progress Ongoing 1 M requirements. Bernard — 13 Maintain, enhance, or install GIS System to better Continue In -Progress Continued enhancements on GPS System will 2 M track critical facilities and vulnerable populations help to save lives. Updating address and adding as well as respond to emergencies. new homes and locations. Bernard — 14 Purchase backup generators and install hookups to Continue In -Progress Currently the Generate for the City of Bernard is 2 M provide electricity for the water supply and the main set up when the power fails it will run the Water pumping station in the event of a power outage. and sewer system and provide power to the City Office and Water building Bernard — 15 Continue to make Emergency Medical Services building Continue In -Progress City and Fire department can give citizens a 2 M available in the event of a hazardous weather. place to stay if needed in an emergency and will allow the needed facilities Bernard — 16 Create and maintain call down list of all critical Continue In -Progress Work with Bernard Fire & Rescue to maintain 3 M personnel. warning and sirens Bernard — 17 Maintain procedure to backup all critical data to prevent Continue In -Progress City files backup and stored off premises. 3 M loss in the event of hazard. Cascade - 1 Provide backup power generators and wiring for Continue In -Progress We will continue to do. 2 M critical facilities. Cascade - 2 Purchase or elevate structures, add lift stations, Continue In -Progress We have sone some items and will continue 2 L increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Cascade - 3 Obtain NOAA weather radios for every home in Continue Not Started Have not started due to funding 2 M Dubuque County. Cascade - 4 Purchase barricades and signage as deemed Continue Not Started As funding permits 2 M necessary to better communicate information. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 234 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Cascade - 5 Continue to improve public awareness of hazardous Continue In -Progress Continue to look for ways to improve 3 H weather through newsletters, public notices, strolling signs, etc. Cascade - 6 Continue to add needed infrastructure to mitigate flood Continue In -Progress Continue to work on as budget allows. 2 H damage. Cascade - 7 Consider building a tornado safe room for all new Continue In -Progress when funding available. 2 M construction. Cascade - 8 Maintain NFIP membership and meet all program Continue In -Progress The community remains a member in good 1 M requirements. standing with the NFIP Cascade - 9 Maintain, enhance, or install GIS System to better Continue Not Started Will implement in July 2017 and continue forward 2 M track critical facilities and vulnerable populations as well as respond to emergencies. Cascade - 10 Continue to contact Dyersville and other communities to Continue In -Progress Ongoing 2 M monitor flood levels upstream; obtain stream gauges for Cascade Cascade - 11 Continue to enforce floodplain management ordinances Continue In -Progress Continue 1 H Cascade - 12 Create and maintain call down list of all critical Continue In -Progress Reviewed annually 3 M personnel. Cascade - 13 Pursue application for future FEMA and State Funding Continue In -Progress Will use when and if needed. 1 M for flood buyouts. Cascade - 14 Continue to maintain and operate current outdoor Continue In -Progress Inspect annually 2 M weather warning system. Cascade - 15 Continue training weather spotters through Cascade Fire Continue In -Progress Train new people 4 H Department. Cascade - 16 Install electrical distribution lines underground. Continue In -Progress There were overhead electric lines throughout 2 H the community. There is an underground project in progress to bury all overhead electric lines. Cascade - 17 Pursue active maintenance in checking storm sewer Continue In -Progress Ongoing 2 H system for debris. Cascade — 18 Rebuild or upgrade floodgates and culverts to prevent Continue In -Progress Made improvements in 2015 3 M flooding. Cascade — 19 Maintain procedure to backup all critical data to prevent Continue In -Progress Daily on working back-ups 3 M loss in the event of hazard. Centralia - 1 Provide backup power generators and wiring for Continue In -Progress 2 M critical facilities. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 235 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Centralia - 2 Continue to maintain existing outdoor warning siren Continue In -Progress 2 H systems and ensure appropriate coverage for population. Centralia - 3 Obtain NOAA weather radios for every home in Continue Not Started 2 M Dubuque County. Centralia - 4 Purchase barricades and signage as deemed Continue In -Progress 2 M necessary to better communicate information. Centralia - 5 Train personnel as weather spotters. Continue In -Progress 4 M Centralia - 6 Continue to improve public awareness of hazardous Continue In -Progress 3 H weather through newsletters, public notices, strolling signs, etc. Centralia - 7 Continue to add needed infrastructure to mitigate flood Continue In -Progress 2 H damage. Centralia - 8 Consider building a tornado safe room for all new Continue In -Progress 2 M construction. Centralia - 9 Maintain procedure to backup all critical data to prevent Continue In -Progress 3 M loss in the event of hazard. Dubuque-1 Provide backup power generators and wiring for Continue In -Progress Some buildings completed and others will be on 2 M critical facilities. line as remodeling or new construction projects Dubuque - 2 Purchase or elevate structures, add lift stations, Continue In -Progress Got a HUD grant to increase culvert size; 2 L increase/reinforce culvert size, and add curb and gutter community continues to make improvements to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Dubuque - 3 Continue to maintain existing outdoor warning siren Continue In -Progress Outdoor warning is critical - especially for severe 2 H systems and ensure appropriate coverage for weather events. System needs to expand with population. development of outdoor recreation areas and must be maintained to provide maximum effectiveness. Dubuque - 4 Obtain NOAA weather radios and Personal/Family Continue - Not Started No local funding available 2 M Response Kits for every home in Dubuque County. Dubuque - 5 Train personnel as weather spotters. Continue In -Progress Classes offered each spring -new employees are 4 M encouraged to attend Dubuque - 6 Continue to improve public awareness of hazardous Continue In -Progress Speaking engagements as needed through PIOs 3 H weather through newsletters, public notices, strolling in Police, Fire and EMA signs, etc. Dubuque - 7 Consider building a tornado safe room for all new Continue Not Started Funding not available 2 M construction. Dubuque - 8 Flood Mitigation Bee Branch Stormwater Pump Station & Continue — In -Progress Planning underway. Funding needed. 2 H Gate Replacement (16th Street Detention Basin) Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 236 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Dubuque - 9 Impervious Surface Reduction (240 Alleys) Continue — In -Progress Completed the conversion of 80 of the 240 alleys H into a pervious pavement system. Funding needed. 3 Dubuque - 10 22nd Street/Kaufmann Avenue Storm Sewer Improvement Continue — In progress Completed segment between Bee Branch Creek and 3 H N. MaNi Street. Additional funding needed to complete from N. Main to Kane Street. Dubuque - 11 17th Street/W. Locust Street Storm Sewer Improvements Continue — In -Progress Complete the segment between Pine Street to Bee H Branch and from Heeb Street to Rosedale & W. 3 Locust streets. Dubuque — 12 Flood Mitigation Maintenance Facility Continue — In -Progress Funding needed. 3 H Dubuque — 13 North End Storm Sewer Improvement (25th - 30th Continue — In -Progress Funding needed. H Streets) 3 Dubuque — 14 Water Plant Flood Control (Floodwall and Stormwater Continue — In -Progress Funding needed. H Conveyances) 3 Dubuque — 15 Back -Up Power for Cooling Center at Ice Arena Continue — In -Progress Funding needed. 2,4 M Dubuque — 16 Maintain NFIP membership and meet all program Continue In -Progress Dubuque continues to maintain NFIP Participation 1 M requirements. Dubuque — 17 Maintain, enhance, or install GIS System to better Continue In -Progress Updates as needed 2 M track critical facilities and vulnerable populations as well as respond to emergencies. Dubuque — 18 Maintain procedure to backup all critical data to prevent Continue In -Progress City allocates money to ensure data is accessible 3 M loss in the event of hazard. Dubuque — 19 Continue to maintain 25 existing generators and Continue In -Progress Maintenance contracts and testing on a regular 2,4 H infrastructure to operate city facilities in the event of a basis power outage. Dubuque— 20 Maintain a Business Continuity Plan to address day -to- Continue Not Started Departments have information needed - staff time 4 M day City business operations. costs Dubuque— 21 Continue to promote the use of NOAA indoor weather Continue In -Progress Obtain and provide NOAA weather radios from 1 M radios at residences, schools, hospitals, nursing homes, grant opportunities and ensure all etc., throughout the city. public buildings have the radios Dubuque— 22 Continue to maintain, enforce, and update building codes Continue In -Progress Staff time dedicated 3 H as needed. Dubuque— 23 Restore the Bee Branch Creek with open channel from Continue In -Progress Restoration is complete, now operation and 2 M the 241 h St. neighborhood to E. 161 h St. retention basin, maintenance. including the acquisition of approximately 70 homes and businesses. Dubuque — 24 Continue ongoing maintenance and monitoring of the Continue In -Progress Levee breech committee meetings and training. 1, 2, 4 H City of Dubuque's flood control system (floodwall) as Look for ways to enhance and improve the mandated by federal law. infrastructure — especially the I wall concrete sections. Dubuque— 25 Maintain awareness of repetitive loss properties to Continue In -Progress Dubuque has purchased properties and will 4 H identify potential areas of risk to life and safety of make it a priority to continue in the future as residents and consider pursuing grant funds for the properties are identified and funding is available acquisition and demolition of these properties. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 237 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Dubuque— 26 Make required improvements based on the outcome of the Continue In -Progress Maintain funding and certification 2 L Levee Flood Certification. Dubuque— 27 Continue to update and maintain Levee Breech Study to Continue In -Progress The process is ongoing; process is continual and 2 M determine scenarios in the event of levee failure. continues to be updated and maintained (change language of strategy) Dubuque— 28 Maintain and repair storm sewers as necessary. Continue In -Progress Ongoing maintenance program 4 M Dubuque — 29 Continue to monitor public retaining walls of concern that Continue In -Progress As needed 3 H may require maintenance or rebuilding. Dubuque— 30 Evaluate ownership and work with responsible entities to Continue In -Progress As needed 2 M mitigate any hazardous situations related to retaining walls in the City of Dubuque. Dubuque— 31 Continue to work with FEMA to buyout flood damaged Continue In -Progress Dubuque has purchased properties and will 2 H homes. make it a priority to continue in the future as properties are identified and funding is available Dubuque— 32 Continue to implement and maintain storm water Continue In -Progress Carter Road, 32"d Street 2 M management and flood control improvements outlined in the Drainage Basin Master Plan Dubuque— 33 Continue to maintain floodplain management ordinances. Continue In -Progress Ongoing program 1 H Dubuque — 34 Buy out, acquire, and demolish damaged, vulnerable or Continue — In -Progress As needed. 1 H endangered structures Dubuque— 35 Purchase and install generator and equipment for Multi- New Funding needed. 2,4 M Cultural Family Center as community shelter. Dubuque— 36 Purchase and install infrastructure facilities and New Site identification and funding needed. 2,4 M equipment for additional community shelters, especially for vulnerable populations using a Resilience Hub mode to build community capacity. Dubuque— 37 Make railroad crossing improvements to protect water New Funding needed 1,2 H plant, residential neighborhoods. Dubuque— 38 Increase tree canopy to reduce urban heat island effect, New $1.5M urban forestry grant received in 2023. 1,2 M protect from severe weather events. Dubuque— 39 Strengthen residential education in culturally New Funding needed. 2 M appropriate and accessible ways, especially regarding flooding and flood insurance. Durango - 1 Continue to maintain existing outdoor warning siren Continue In -Progress Money budgeted for maintenance and upkeep as 2 H systems and ensure appropriate coverage for needed population. Durango - 2 Obtain NOAA weather radios for every home in Dubuque Continue Not Started No local funding available 2 M County. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 238 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Durango - 3 Continue to add needed infrastructure to mitigate flood Continue In -Progress Projects identified as needed 2 H damage. Durango - 4 Consider building a tornado safe room for all new Continue In -Progress Ongoing 2 M construction. Durango - 5 Maintain NFIP membership and meet all program Continue In -Progress Durango continues to maintain NFIP Participation 1 M requirements. Durango - 6 Continue dialog with Dubuque County & DNR regarding Continue In -Progress No local funding available 2 M flood mitigation pertaining to depth/width and debris in nearby waterways, and implement any solutions identified Durango - 7 Continue to pursue flood mitigation including buyouts. Continue In -Progress Ongoing 2 H Durango - 8 Buy out, acquire, and demolish damaged, vulnerable or Continue — Not started Have not needed at this time. 1 H endangered structures Durango — 9 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, social media, and texts. Dyersville - 1 Provide backup power generators and wiring for Continue In -Progress Update as needed 2 M critical facilities. Dyersville - 2 Continue to address storm water runoff through Continue In -Progress We prepare an agreement on each development 3 H development agreements for all commercial industrial and residential subdivision developments. The Planning & Zoning Commission, along with City staff, will review developments and work to assure storm water runoff issues are addressed in development agreements when appropriate. Dyersville - 3 Continue to enforce storm water ordinances. Continue In -Progress Prepare an agreement on each development. 2 H Dyersville - 4 Continue to enforce Dyersville floodplain ordinance and Continue In -Progress Ongoing enforcement 1 H National Flood Insurance Program regulations. The City Administrator is designated as the local Floodplain Manager and enforcement person. Dyersville - 5 Continue to closely monitor development of land Continue In -Progress Implemented comp plan and using GIS for info for 1 L surrounding the city and potential for the creation of monitoring. hazards to the city. The City Administrator will monitor and review land developments around the city and provide comments as appropriate. Dyersville - 6 Continue to maintain storm sewer system including the Continue In -Progress Implemented Asset Management 4 H dry runs that serve as open channel drainage ditches. Software Dyersville - 7 Continue to improve storm sewer system as a Continue In -Progress Annually 1 M component of the City's regular street improvement program. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 239 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Dyersville - 8 Continue to maintain and make improvements to the Continue In -Progress Annually 2 H sanitary sewer system to reduce infiltration, including such projects as the installation of bolt- down covers on manholes in the floodplain areas and inspections of lift stations seals, etc. in the flood plain. The Public Works Department Head will recommend improvements to the City Administrator for inclusion in the city budget as funding allows. Dyersville - 9 Continue to work with appropriate agencies to identify Continue In -Progress Annually 2 H effective physical means to minimize flooding. Dyersville — 10 Continue to identify and publicize location and Continue In -Progress Annually 2 H availability of storms shelters, and add new shelters as required and available Dyersville - 11 Purchase or elevate structures, add lift stations, Continue In -Progress Annually addressed 2 L increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Dyersville — 12 Continue to encourage the National Weather Service to Continue In -Progress Added 3 monitor sites with Iowa Flood Center. 2 L add a weather transmitter tower to their system or relocate their existing tower to better serve the City of Dyersville. Dyersville - 13 Continue to evaluate and monitor potential risks with Continue In -Progress Using Asset Management Software 4 H utility placements. Dyersville - 14 Continue to remove dead trees/prune trees and clean Continue In -Progress Using Asset Management Software and inspect 2 H areas vulnerable to high winds. The Public Works all trees Department Head will monitor trees within City right-of- way and continue to remove dead trees/prune trees vulnerable to high winds. Dyersville - 15 Continue acquisition of flood -damaged properties Continue In -Progress Continue with the buyout of key properties 2 H through current and future State- and FEMA- funded programs and/or other programs and marketing of the programs to floodplain residents. Dyersville - 16 Purchase barricades and signage as deemed Continue In -Progress Using Alert Iowa and update barricades as needed 2 M necessary to better communicate information. Dyersville - 17 Train personnel as weather spotters. Continue In -Progress Annually 4 M Dyersville - 18 Continue to improve public awareness of hazardous Continue In -Progress Communicate through news media, city website 3 H weather through newsletters, public notices, strolling and through code red signs, etc. Dyersville - 19 Continue to add needed infrastructure to mitigate flood Continue In -Progress Annually 2 H damage. Dyersville - 20 Consider building a tornado safe room for all new Continue In -Progress Encourage property owners to build 2 M construction. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 240 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Dyersville - 21 Maintain NFIP membership and meet all program Continue In -Progress Floodplain Ord. updated 2020 1 M requirements. Dyersville - 22 Maintain, enhance, or install GIS System to better Continue In -Progress Maintain our GIS system and enhanced 2 M track critical facilities and vulnerable populations are asset management system as well as respond to emergencies. Dyersville - 23 Create and maintain call down list of all critical Continue In -Progress Updated annually 3 M personnel. Dyersville — 24 Maintain procedure to backup all critical data to prevent Continue In -Progress Moved critical data to the cloud 3 M loss in the event of hazard. Dyersville — 25 Continue flood watch protocol whereby river elevations Continue In -Progress Installed flood monitoring equipment with Iowa 2 H are regularly monitored during potential flood events. Flood Center Included in this protocol is the need to purchase cameras to assist in monitoring river levels from remote locations. The protocol includes defined responses to the various river elevations. Dyersville — 26 River and creek restoration to reduce flood impacts and New Funding needed 1 H damages. Dyersville — 27 Complete flood study through BRIC grant to compile New Received $250,000 FEMA BRIC grant and bid data identifying potential flood impact areas and a from Impact 7G. cost/benefit analysis for capital improvement projects. Epworth - 1 Provide backup power generators and wiring for Continue In -Progress Ongoing 2 M critical facilities. Epworth - 2 Purchase or elevate structures, add lift stations, Continue In -Progress Ongoing as needed. 2 H increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Epworth - 3 Install back flow preventers in the new construction Continue In -Progress Ongoing as needed. 2 M developments. Epworth - 4 Continue to maintain existing outdoor warning siren Continue In -Progress Money budgeted through fire department budget for 2 H systems and ensure appropriate coverage for batteries, maintenance, and upkeep population. Epworth - 5 Continue to require underground burial of power lines in Continue In -Progress Is required per ordinance 2 H new subdivisions. Epworth - 6 Continue to utilize Fire Station for accommodations for Continue In -Progress As needed 2 H persons suffering from extreme heat or wind-chill conditions. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 241 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Epworth - 6 Obtain NOAA weather radios for every home in Continue Not Started No local funding available 2 M Dubuque County. Epworth - 7 Train personnel as weather spotters. Continue In -Progress Classes offered each spring - new employees are 4 M encouraged to attend Epworth - 8 Continue to improve public awareness of hazardous Continue In -Progress Speaking engagements as needed through PIOs 3 H weather through newsletters, public notices, strolling in Police, Fire and EMA signs, etc. Epworth - 9 Consider building a tornado safe room for all new Continue Not Started No local funding available 2 M construction. Epworth - 10 Continue to conduct education programs at schools Continue In -Progress annually conducted and as requested 4 H during Fire Prevention Week. Epworth - 11 Identify and equip potential shelters in Epworth to Continue In -Progress Ongoing 2 M provide safe locations for persons during an emergency Epworth - 12 Purchase and maintain backup generators for sewer lift Continue — In -progress Generators were purchased and maintenance is 3 H stations on oin Epworth - 13 Develop a hazard recovery plan that includes hazard Continue — Not Started 4 M mitigation as part of the recovery process Epworth - 14 Maintain NFIP membership and meet all program Continue In -Progress Community continues to maintain NFIP 1 M requirements. Participation Epworth - 15 Maintain, enhance, or install GIS System to better Continue In -Progress Updates as needed 2 M track critical facilities and vulnerable populations as well as respond to emergencies. Epworth - 16 Maintain procedure to backup all critical data to prevent Continue In -Progress City allocates money to ensure data is accessible 3 M loss in the event of hazard. Epworth - 17 Buy out, acquire, and demolish damaged, vulnerable, or Continue — Not Started Will implement as needed endangered structures 1 H Farley - 1 Purchase or elevate structures, add lift stations, Continue In -Progress 1 culvert and a detention pond were completed in 2 H increase/reinforce culvert size, and add curb and gutter 2020. Lift station has not been installed yet. to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Farley - 2 Protect Waste Water Treatment Center from Flooding by Continue In -Progress SW is complete. SE still needs to be done when 2 H developing a retention/ detention area to the SW of the funding becomes available. WWTP. Create a retention/ detention area to the SE of the WWTP with a bypass storm water pipe. Farley - 3 Upgrade city storm sewer system to prevent future Continue In -Progress Need funding 2 H residential, business, and city infrastructure flood damage. Farley - 4 Consider building a tornado safe room for all new Continue In -Progress City has a storm shelter at new city hall but will 2 M construction. considerwith each construction project. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 242 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Farley - 5 Maintain NFIP membership and meet all program Continue In -Progress Ongoing 1 M requirements. Farley - 6 Maintain, enhance, or install GIS System to better Continue In -Progress Farley has capability but is understaffed. 2 M track critical facilities and vulnerable populations as well as respond to emergencies. Farley - 7 Maintain procedure to backup all critical data to prevent Continue In -Progress This will be incorporated into a radium removal 3 M loss in the event of hazard. facility that is currently being constructed. Farley — 8 Purchase and install generator and hookup at fire New station to use in the event of an emergency. Farley — 9 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, social media, and texts. Graf — 1 Obtain NOAA weather radios for every home in Graf. Continue In -Progress As funding permits 2 M Graf — 2 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, and social media Graf — 3 Continue to add needed infrastructure to mitigate flood Continue In -Progress Have maintained flood catch basin 2 H damage. Graf — 4 Maintain NFIP membership and meet all program Continue In -Progress Community continues to maintain NFIP 1 M requirements. Participation Graf — 5 Maintain procedure to backup all critical data to prevent Continue In -Progress Ongoing 3 M loss in the event of hazard. Graf — 6 Buy out, acquire, and demolish damaged, vulnerable or Continue — Not started N/A endangered structures 1 H Graf — 7 Hold CPR training for anyone in Graf who is interested in New 2 M learning CRP and how to use the AED devices. Holy Cross - 1 Obtain NOAA weather radios for every home in Continue In -Progress Programs accessible for residents to acquire 2 M Dubuque County. weather radios every year Holy Cross - 2 Continue to pursue FEMA and other funding Continue In -Progress Applying for grant to replace an 2 H opportunities to replace weather siren. older siren Holy Cross - 3 Train personnel as weather spotters. Continue In -Progress Managed by fire dept. 4 M Holy Cross - 4 Maintain NFIP membership and meet all program Continue In -Progress Community continues to maintain NFIP 1 M requirements. Participation Holy Cross — 5 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, social media, and texts. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 243 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Luxemburg - 1 Continue to maintain existing outdoor warning siren Continue In -Progress Money budgeted for maintenance and upkeep as 2 H systems and ensure appropriate coverage for needed population. Luxemburg - 2 Obtain NOAA weather radios for every home in Continue Not Started No local funding available 2 M Dubuque County. Luxemburg - 3 Continue Good Neighbor Program where volunteers Continue In -Progress No local funding available 2 H check on welfare of residents following a severe weather event. Luxemburg - 4 Upgrade storm sewers to prevent flash flooding in times Continue In -Progress No local funding available 4 H of heavy downfall of rain. Luxemburg - 5 Continue to add needed infrastructure to mitigate flood Continue In -Progress Projects identified as needed 2 H damage. Luxemburg - 6 Consider building a tornado safe room for all new Continue In -Progress No local funding available 2 M construction. Luxemburg - 7 Maintain NFIP membership and meet all program Continue In -Progress Luxemburg continues to maintain NFIP 1 M requirements. Participation Luxemburg — 8 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, social media, and texts. New Vienna - 1 Provide backup power generators and wiring for Continue In -Progress Fire dept/sewer system 2 M critical facilities. New Vienna - 2 Purchase or elevate structures, add lift stations, Continue In -Progress Larger lines installed 2 H increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. New Vienna - 3 Obtain NOAA weather radios for every home in Continue In -Progress Give some away every year 2 H Dubuque County. New Vienna - 4 Purchase barricades and signage as deemed Continue In -Progress Info always available 2 M necessary to better communicate information. New Vienna - 5 Establish Good Neighbor program for winter storms. Continue In -Progress Open communications 3 H New Vienna - 6 Continue to monitor river levels and areas that have Continue In -Progress Moniter2 creeks during heavy rains 3 H experienced flash flooding in the past and add new stream gauges. New Vienna - 7 Train personnel as weather spotters. Continue In -Progress Training updated yearly 4 H New Vienna - 8 Continue to enforce flood plain ordinances. Continue In -Progress Monitored daily 2 H New Vienna - 9 Continue to utilize Mercy St. Mary's in Dyersville, US Continue In -Progress Facilities are available except post 1 H Post Office, and VFW Club in New Vienna as facilities for individuals suffering from extreme heat. New Vienna - 10 Continue to improve public awareness of hazardous Continue In -Progress Info always available 3 H weather through newsletters, public notices, strolling signs, etc. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 244 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New New Vienna - 11 Continue to add needed infrastructure to mitigate flood Continue In -Progress Flood wall added 2 H damage. New Vienna - 12 Consider building a tornado safe room for all new Continue In -Progress Looking into different options 2 H construction. New Vienna - 13 Build another access road on higher ground to waste Continue In -Progress Checking for best route 1 H water treatment facility. New Vienna - 14 Maintain or consider NFIP membership as required. Continue In -Progress Have NFIP membership 1 M New Vienna - 15 Maintain, enhance, or install GIS System to better Continue In -Progress Upgrading our info 2 M track critical facilities and vulnerable populations as well as respond to emergencies. New Vienna - 16 Create and maintain call down list of all critical Continue In -Progress System upgraded 3 M personnel. New Vienna - 17 Maintain procedure to backup all critical data to prevent Continue In -Progress Upgrading as needed 3 M loss in the event of hazard. New Vienna - 18 Buy out, acquire, and demolish damaged, vulnerable, or Continue — Not Started On an as needed basis 1 H endangered structures. Peosta - 1 Provide backup power generators and wiring for Continue In -Progress 2 M critical facilities. Peosta - 2 Purchase or elevate structures, add lift stations, Continue In -Progress 2 L increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Peosta - 3 Continue to maintain existing outdoor warning siren Continue In -Progress 2 H systems and ensure appropriate coverage for population. Peosta - 4 Obtain NOAA weather radios for every home in Continue In -Progress 2 M Dubuque County. Peosta - 5 Purchase barricades and signage as deemed Continue In -Progress 2 M necessary to better communicate information. Peosta - 6 Train personnel as weather spotters. Continue In -Progress 4 M Peosta - 7 Continue to improve public awareness of hazardous Continue In -Progress 3 H weather through newsletters, public notices, strolling signs, etc. Peosta - 8 Continue to add needed infrastructure to mitigate flood Continue In -Progress City has contracted with IIW to do a storm water 2 H damage. study, including mapping, and identifying future capital improvement projects Peosta - 9 Consider building a tornado safe room for all new Continue In -Progress 2 M construction. Peosta - 10 Maintain NFIP membership and meet all program Continue In -Progress Ongoing 1 M requirements. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 245 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Peosta 11 Maintain, enhance, or install GIS System to better Continue In -Progress 2 M track critical facilities and vulnerable populations as well as respond to emergencies. Peosta - 12 Maintain procedure to backup all critical data to prevent Continue In -Progress 3 M loss in the event of hazard. Peosta - 13 Trim trees or remove trees that are potential risk to city Continue In -Progress 1 H properties and infrastructures. Peosta - 14 Utilize the Peosta Community Centre as a shelter for Continue In -Progress 2 H persons suffering from Extreme Heat. Rickardsville - 1 Provide backup power generators and wiring for Continue In -Progress Ongoing 2 M critical facilities. Rickardsville - 2 Continue to maintain existing outdoor warning siren Continue In -Progress Ongoing 2 H systems and ensure appropriate coverage for population. Rickardsville - 3 Obtain NOAA weather radios for every home in Continue Not Started Ongoing 2 M Dubuque County. Rickardsville - 4 Train personnel and citizens as weather spotters. Continue In -Progress Ongoing 4 M Rickardsville - 5 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, strolling signs, etc. Rickardsville - 6 Establish and maintain agreement with St. Joseph Continue Not Started Ongoing H Parish to designate church hall as shelter for the community in the event of extreme heat or other hazards. Rickardsville - 7 Continue to add needed infrastructure to mitigate flood Continue In -Progress Ongoing 2 H damage at lagoon and baseball park Rickardsville - 8 Consider building a tornado safe room for all new Continue In -Progress Ongoing 2 M construction. Rickardsville - 9 Maintain procedure to backup all critical data to prevent Continue In -Progress Ongoing 3 M loss in the event of hazard. Sageville - 1 Purchase or elevate structures, add lift stations, Continue In -Progress Ongoing 2 L increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Sageville - 2 Continue to maintain existing outdoor warning siren Continue In -Progress Ongoing 2 H systems and ensure appropriate coverage for population. Sageville - 3 Obtain NOAA weather radios for every home in Dubuque Continue Not Started Ongoing 2 M County. Sageville - 4 Train personnel as weather spotters. Continue In -Progress Ongoing 4 M Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 246 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Sageville - 5 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, strolling signs, etc. Sageville - 6 Continue to add needed infrastructure to mitigate flood Continue In -Progress Ongoing 2 H damage. Sageville - 7 Consider building a tornado safe room for all new Continue In -Progress Ongoing 2 M construction. Sageville - 8 Maintain NFIP membership and meet all program Continue In -Progress Ongoing 1 M requirements. Sageville - 9 Maintain procedure to backup all critical data to prevent Continue In -Progress Ongoing 3 M loss in the event of hazard. Sageville - 10 Continue to explore FEMA grant to assist in flood Continue Not Started Ongoing 2 H buyouts of damaged homes, land, and mobile homes. Sherrill - 1 Utilize the Sherrill Fire Station with generator back up to Continue In -Progress Ongoing 2 H accommodate citizens in the community during extreme heat or wind chill conditions. Sherrill - 2 Provide backup power generators and wiring for Continue In -Progress Ongoing 2 M critical facilities. Sherrill - 3 Purchase or elevate structures, add lift stations, Continue In -Progress Ongoing 2 L increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Sherrill - 4 Continue to maintain existing outdoor warning siren Continue In -Progress Ongoing 2 H systems and ensure appropriate coverage for population. Sherrill - 5 Obtain NOAA weather radios for every home in Continue Not Started Ongoing 2 M Dubuque County. Sherrill - 6 Purchase barricades and signage as deemed Continue In -Progress Ongoing 2 M necessary to better communicate information. Sherrill - 7 Train personnel as weather spotters. Continue In -Progress Ongoing 4 M Sherrill - 8 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, strolling signs, etc. Sherrill - 9 Continue to add needed infrastructure to mitigate flood Continue In -Progress Ongoing 2 H damage. Sherrill - 10 Consider building a tornado safe room for all new Continue In -Progress Ongoing 2 M construction. Sherrill - 11 Maintain or consider NFIP membership as required. Continue In -Progress Ongoing 1 M Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 247 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Sherrill - 12 Maintain, enhance, or install GIS System to better Continue In -Progress Ongoing 2 M track critical facilities and vulnerable populations as well as respond to emergencies. Sherrill - 13 Maintain procedure to backup all critical data to prevent Continue In -Progress Ongoing 3 M loss in the event of hazard. Worthington - 1 Provide backup power generators and wiring for Continue In -Progress Backup generators are in place at both sewer 2 M critical facilities including but not limited to Memorial plant and water tower and in good working Hall, Fire Station, and City Hall. condition. Worthington - 2 Purchase or elevate structures, add lift stations, Continue In -Progress The current sewer lift station is in good 2 L increase/reinforce culvert size, and add curb and gutter working condition; however, curb and gutter to streets in areas in flood zones with severe and may be replaced soon on 1st Avenue East, repetitive flood damage to prevent reoccurrence. where the biggest problem of flooding occurs. Working on grant next year. Worthington - 3 Continue to maintain existing outdoor warning siren Continue In -Progress Tested each month, and records of their 2 H systems and ensure appropriate coverage for working condition is kept at City Hall. population. Worthington - 4 Purchase barricades and signage as deemed Continue In -Progress Do have road barricades and traffic cones that 2 M necessary to better communicate information. assist with hazard/safety communication to citizens Worthington - 5 Train personnel as weather spotters. Continue In -Progress The city fire department has this performed 4 H regularly Worthington - 6 Continue to improve public awareness of hazardous Continue In -Progress Critical information continues to be shared H weather through newsletters, public notices, strolling with citizens through Code Red, posting, 3 signs, etc. and newsletters. Worthington - 7 Maintain fire hydrant with current flushing and testing Continue In -Progress This is regularly performed by Water/Wastewater 4 H programs in place. Operator Worthington - 8 Accommodate citizens at the Community Center in the Continue In -Progress This is a plan; however, the city has not done 2 H event of extreme heat. recently as no need present Worthington - 9 Consider building a tornado safe room for all new Continue In -Progress This is something to keep in mind for future 2 M construction. construction, but the city has not had new construction in many years. Worthington - 10 Maintain NFIP membership and meet all program Continue In -Progress Ongoing 1 M requirements. Worthington - 11 Create and maintain call down list of all critical Continue In -Progress This list is maintained and kept in the City's 2 M personnel. fire station Worthington - 12 Maintain procedure to backup all critical data to prevent Continue In -Progress All physical and electronic data is back -upped with M loss in the event of hazard. current software and heavy-duty, fireproof 3 cabinets. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 248 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Worthington - 13 Buy out, acquire, and demolish damaged, vulnerable, or Continue — Not Started As need arises, will address. endangered structures 1 H Worthington — 14 Upgrade cyber security devices/firewalls New Increase in threats — funding Worthington — 15 Clean river vegetation near town New Decrease flash flood risk Funding Worthington — 16 Increase and level land behind fire station and city hall New Decrease flood risk Funding Zwingle - 1 Provide backup power generators and wiring for Continue Not Started A backup generator is needed to keep the waste 2 M critical facilities. wastewater system working properly and can be set up to keep lights and power in the city facilities when the power is out. Zwingle - 2 Purchase or elevate structures, add lift stations, Continue Not Started Need to prepare to be able to set up road blocks 2 L increase/reinforce culvert size, and add curb and gutter and sand bags if needed. Need to have a plan in to streets in areas in flood zones with severe and case of an emergency. Need to make sure we repetitive flood damage to prevent reoccurrence. have adequate equipment cones signs etc. Zwingle - 3 Continue to maintain existing outdoor warning siren Continue Not Started Need to update the siren and test and make sure it 2 H systems and ensure appropriate coverage for is properly working a regular monthly check needs population. to be completed. Zwingle - 4 Obtain NOAA weather radios for every home in Continue Not Started Weather radios for each home would be great 2 M Dubuque County. because the public is kept aware also with these radios Zwingle - 5 Train personnel as weather spotters. Continue Not Started Educate the public to take classes also 4 M Zwingle - 6 Continue to improve public awareness of hazardous Continue Not Started Need to work up a emergency plan contacts, run 3 H weather through newsletters, public notices, strolling through scenarios so we are aware of what is signs, etc. needed to survive Zwingle - 7 Purchase backup generators and install hookups to Continue Not Started Backup generator is needed we 3 M provide electricity in the event of a power outage. also need to make sure we have the proper hookups and educated people to use it hook it up and keep it running Zwingle - 8 Continue to add needed infrastructure to mitigate flood Continue Not Started City needs to set up a safe shelter for the public 2 H damage. as to weather, being homeless etc. Zwingle - 9 Continue to employ Good Neighbor policy and Shelter in Continue Not Started In case of an emergency hold public classes such 2 H Place policy until better options are available. as CPR and other lifesaving education so the public can help and save someone's life. Zwingle - 10 Consider building a tornado safe room for all new Continue Not Started The city has the library but we need a safe place 2 M construction. for the public to go as a shelter for safety during storms. This also could be used as a shelter if someone is displaced from their home. Zwingle - 11 Maintain NFIP membership and meet all program Continue in -Progress Community continues to maintain NFIP 1 M requirements. Participation Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 249 2024 Action ID Action Summary Action Status Action Status Update Goal Priority (Completed, Delete, Referenced Continue In- Progress, Continue Not Started, New Zwingle - 12 Maintain procedure to backup all critical data to prevent Continue Not Started Need to set up a data backup for city information 3 M loss in the event of hazard. and communications. SCHOOL DISTRICTS Dubuque Public Develop policy to prevent construction in the floodplain of Continue In -Progress Ongoing 2 H School District- 1 education buildings or supporting structures (such as bus barns or maintenance sheds). Dubuque Public Develop policy to better secure against cyber security New Recent data breech 2 School District — 2 breech Dubuque Public Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H School District - 3 weather through newsletters, public notices, social media, and texts. NICC - 1 Consider building a tornado safe room for all new Continue — Not Started 2 M construction. NICC-2 Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H weather through newsletters, public notices, social media, and texts. Western Develop policy to prevent construction in the floodplain of Continue In -Progress We continue to review all construction projects to 1 H Dubuque Public education buildings or supporting structures (such as bus ensure there are no structure built in the School District- 1 barns or maintenance sheds). floodplain. Western Dubuque Continue to improve public awareness of hazardous Continue In -Progress Ongoing 3 H Public School weather through newsletters, public notices, social media, District - 2 and texts. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 250 Table 4.2. Mitigation Action Implementation Strategy —Continuing and New Actions 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Unincorporated Funding Dubuque General funds $10,000 to 3-5 yrs County — 1 County $50,000 Emergency Management Unincorporated Funding Dubuque FEMA Grant, Less than 3-5 yrs County - 2 County General funds $10,000 Emergency Management Unincorporated Funding Dubuque County General funds Little or no 3-5 yrs County - 3 Secondary cost Roads Unincorporated Weather spotters provide a Funding Dubuque County General funds Little or no 1 yr County — 4 valuable Emergency cost service during a severe weather Management event. The community will support continued training of these weather spotters as new people become interested in learning these skills. Unincorporated Funding Dubuque Co General funds Little or no 1 yr County — 5 EMA cost Unincorporated Dubuque Zoning $50,000 to 5 yrs County - 6 Administrator $100,000 Unincorporated NA Dubuque County Little or no 3-5 County — 7 Zoning cost yrs Administrator Unincorporated Funding Dubuque Co EMA General County - 8 funds; FEMA 0 , $1000 to 10$50,000 Unincorporated Funding Dubuque County General funds; Little or no 1 yr County - 9 Emergency EMPG cost Management Unincorporated Funding Dubuque County Little or no 3-5 yrs County — 10 Zoning Administrator cost Unincorporated NA Dubuque Little or no 3-5 yrs County — 11 County cost Emergency Management Funding Dubuque County Little or no 3-5 yrs Unincorporated Emergency cost County — 12 Management Unincorporated Funding Dubuque County Little or no 3-5 yrs County — 13 Zoning Administrator cost Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 251 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Unincorporated Funding Dubuque County Less than 3-5 yrs County — 14 Emergency $10,000 Management Funding Dubuque County General funds Less than 3-5 yrs Unincorporated Zoning $10,000 County — 15 Administrator Funding Dubuque County Less than 3-5 yrs Unincorporated Emergency $10,000 County — 16 Management Funding Dubuque County Little or no 3-5 yrs Unincorporated Zoning Administrator cost County — 17 Unincorporated Funding Dubuque County $10,000 to 1 yr County — 18 Secondary Roads $50,000 Unincorporated Funding Dubuque County $10,000 to 1 yr County — 19 Emergency $50,000 Management Unincorporated Funding Dubuque County $10,000 to 3-5 yrs County — 20 Emergency $50,000 Management Unincorporated Funding Dubuque County $100,000 to 3-5 yrs County — 21 Engineer $500,000 Unincorporated Funding Dubuque County GIS General funds Less than 3-5 yrs County — 22 $10,000 Funding Dubuque County General funds Less than 1 yr Unincorporated Information $10,000 County — 23 Technology Unincorporated Structures in the floodplain will Funding Federal funds; $500,000 to Decreased 3-5 yrs County — 24 be removed if located in a Dubuque County general funds $1,000,000 impacts and vulnerable area Emergency damage in vulnerable Management areas Unincorporated The current facility is out of Funding Dubuque County City o County/City of $5M Better service, response 3-5 years County — 25 space and requires and BOS Dubuque Dubuque time, capacity expansion and new equipment. Unincorporated Safety in hazardous conditions. Roads Dept Safety while driving in 3-5 years. County — 26 dangerous/hazardous situations. Repeated flooding has caused Engineering Reduce flooding 3-5 years Unincorporated erosion and unstable banks, County — 27 resulting in further flooding. Asbury-1 Certain facilities are critical Funding Asbury Public General funds $10,000 - 3-5 or the continuing operation, Works $50,000 years life safety, and general needs of the community. Electrical Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 252 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate outages can be caused by a variety of hazards and can wreak havoc on the continued operations of the facilities. Asbury - 2 Funding Asbury City General funds $500,000 -Reduce vulnerability 3-5 Administrator $1M in hazard areas years Asbury - 3 Warning systems require NA Asbury Public FEMA FEMA grant Less thanlmproved public 3-5 continuous upgrades to Works General funds $10,000 safety years ensure effectiveness for the community Asbury-4 Funding Asbury Public General funds Little or nolmproved public 3-5 Works cost safety years Asbury — 5 Weather spotters provide a NA Dubuque County Dubuque General funds Little or nolmproved public 1 year valuable service during a EMA Co EMA cost safety severe weather event. Asbury — 6 Funding Asbury City General funds $10,000 -Improved public 1 year Administrator $50,000 safety Asbury — 7 Asbury City Council General funds Little or no More cost than 5 ears Asbury — 8 Asbury Public Works Asbury — 9 Asbury Public Works Dubuque No Cost Ongoing Co Library Asbury —10 Asbury Public Works General funds Less than Ongoing $1,000 Asbury —11 Asbury Administration No Cost Ongoing Asbury —13 Funding, not yet Asbury Public Works General funds 100,000- 3-5 needed $500,000 years Asbury —14 NA Asbury City Staff time Ongoing Administrator Asbury —15 Prevent wildfire/grass fires. NA Asbury Fire Staff time Ongoing Department Asbury —16 Asbury City Staff Time Ongoing Administrator Balltown —1 Funding Balltown Fire FEMA General Under Safety for those in 3-5 Department funds/grants $10,000 areas where cell years receptions is not good. Balltown - 2 NA Balltown Fire Under Ongoing Department $1,000 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 253 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Balltown - 3 NA Balltown City Clerk Under Ongoing $1,000 BaIItown — 4 Balltown City Clerk Staff time Ongoing Balltown — 5 Funding Dubuque Co EMA General funds Little or no 1 yr cost Bankston - 1 To warn the citizens of Funding Bankston Fire FEMA FEMA Under 3-5 Bankston of a tornado. The Department $10,000 years city siren is currently disconnected. Bankston - 2 Funding Dubuque Co EMA General funds Little or no 1 yr cost Bernard — 1 Funding Bernard City Council Dubuque FEMA Under 3-5 Co EMA $10,000 years Bernard — 2 NA Bernard Fire FEMA/General Under 3-5 Department funds $10,000 years Bernard — 3 Funding Dubuque County Dubuque FEMA/general Under 3-5 EMA Co EMA funds $10,000 years Bernard — 4 Funding Bernard Mayor & City General funds Little to no 3-5 Council cost years Bernard — 5 Funding Dubuque County Dubuque General funds Little to no 1 year EMA Co EMA cost Bernard — 6 Funding Bernard City Council General funds Little to no 1 year cost Bernard — 7 Funding Bernard City Council General funds Little to no More cost than 5 ears Bernard - 8 ALL Unknown $50,000 to 3-5 yrs $100,000 Bernard - 9 Account of hazardous Cost Bernard Mayor and Fire FEMA Grant $100,000 to Protection from death 3-5 yrs materials that are being City Council Dept, $500,000 and health issues transported across the EMA community and We currently have no place for Cost Bernard Mayor, EMA, FEMA Grant, $100,000 to Protect and save life, 3-5 yrs Bernard - 10 our citizens that do not have a council, and Fire Fire In -Kind $500,000 keep people healthy basement for Department Dept. protection. Keeping infrastructure and utilities available for citizens Our community has a high- Cost - no local Bernard Mayor and County FEMA Grant $50,000 to Keeping water out of 3-5 yrs Bernard — 11 water level table, when we get money available City Council EMA $100,000 basements and city heavy rains our utilities system cannot handle it and water goes where we do not need it Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 254 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Bernard — 12 NA Bernard City Unknown Little or no 3-5 yrs Council cost Bernard — 13 Funding Bernard City General funds Less than 3-5 yrs Council $10,000 Bernard 14 Funding Bernard Mayor and Unknown $10,000 to 3-5 yrs City Council $50,000 Bernard — 15 NA Bernard City Little or no 1 yr Council cost Bernard — 16 Funding Bernard Mayor General funds $10,000 to 1 yr $50,000 Bernard — 17 Funding Bernard Mayor General funds Less than 1 yr $10,000 Cascade - 1 Funding Cascade City General funds $10,000 to 3-5 yrs Administrator $50,000 Cascade - 2 Funding Cascade City General funds $500,000 to 3-5 yrs Council $1,000,000 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Cascade - 3 Emergency General funds $10,000 Management Cascade - 4 Funding Cascade Public General funds Little or no 3-5 yrs works cost Cascade - 5 Funding Cascade City General funds Little or no 1 yr Administrator cost Funding Cascade/Public General funds $10,000 to More Cascade - 6 Works Director $50,000 than 5 yrs Cascade - 7 Cascade City Unknown $50,000 to 3-5 yrs Council $100,000 Cascade - 8 NA Cascade City Unknown Over 3-5 yrs Administrator $1, 000,000 Cascade - 9 Funding Cascade City General funds Less than 3-5 yrs Administrator $10,000 Cascade - 10 NA Cascade Fire General funds Little or no 1 yr cost Cascade - 11 NA Cascade City General funds Little or no 3-5 yrs Administrator cost Cascade - 12 Funding Cascade City General funds Little or no 1 yr Administrator cost Cascade - 13 Funding Cascade City General funds $500,000 to 3-5 yrs Administrator $1, 000,000 Cascade - 14 Funding Cascade Public General funds Over 3-5 yrs works $1, 000,000 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 255 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Cascade - 15 NA Cascade Fire Dubuque General funds Little or no 3-5 yrs County cost EMA There were overhead electric Time - obtaining Cascade Municipal None General funds $500,000 to Electric lines will not More Cascade - 16 lines throughout the necessary Utilities identified $1,000,000 come down during than community. There is an easements summer or ice 5 yrs underground project in storms progress to bury all overhead electric lines. Cascade - 17 NA Cascade Public Unknown NA 3-5 yrs works Cascade —18 Funding Cascade City General funds Less than 1 yr Administrator $10,000 Funding City Administrator Federal funds; $500,000 to Decreased Cascade —19 Structures in the floodplain will general funds $1,000,000 impacts and 3-5 yrs be removed if located in a damage in vulnerable area vulnerable areas Centralia - 1 Funding Centralia Mayor General funds $10,000 to 3-5 yrs $50,000 Centralia - 2 NA City of Centralia FEMA Grant, $500,000 to 3-5 yrs General funds $1,000,000 Centralia - 3 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Centralia - 4 Funding Centralia Mayor General funds Little or no 3-5 yrs cost Centralia - 5 Weather spotters provide a Funding Dubuque County General funds Little or no 1 yr valuable service during a Emergency cost severe weather event. The Management community will support continued training of these weather spotters as new people become interested in learning these skills Centralia - 6 Funding Centralia Mayor General funds Little or no 1 yr and EMA cost Funding Centralia/EMC/May General funds $10,000 to More Centralia - 7 or $50,000 than 5 yrs Centralia - 8 Centralia City Unknown $50,000 to 3-5 yrs Council $100,000 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 256 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Centralia - 9 Funding Centralia City General funds Less than 1 yr Council $10,000 Dubuque-1 Funding City of Dubuque General funds $10,000 to 3-5 yrs Engineering $50,000 Department Dubuque - 2 Funding City of Dubuque General funds $500,000 to 3-5 yrs Engineering $1,000,000 Department Dubuque - 3 Outdoor warning siren is Funding through City of Dubuque Local FEMA Grant, $50,000 to Early warning of 3-5 yrs critical - especially for severe Fire Dept. budget Fire Dept and EMA electric General funds $100,000 severe weather or weather events. System for maintenance, utility and other hazard to people needs to expand with funding for City Public that are outdoors in an development of outdoor expansion and Works, 911 affected area recreation areas and must be acceptable Comm maintained to provide locations for Center maximum effectiveness installation and County EMA Dubuque - 4 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Dubuque - 5 Weather spotters provide a Funding Dubuque County General funds Little or no 1 yr valuable service during a Emergency cost severe weather event. The Management community will support continued training of these weather spotters as new people become interested in learning these skills Dubuque - 6 Funding Dubuque Public General funds Little or no 1 yr Information Office cost and EMA Dubuque - 7 Dubuque Housing Unknown $50,000 to 3-5 yrs Services $100, 000 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 257 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Dubuque - 8 Improve street drainage by Funding, private City of Dubuque FEMA Grant, $10,000 to Improving pavement 3-5 yrs improving upstream property Engineering General funds $50,000 drainage in the area detention and by improving ownership Department would reduce private the storm sewer system on property damage and Hillcrest Road, east of transportation safety Rosemont due to flooding on Hilcrest Rd during heavy rain events. Dubuque - 9 Replace impervious surfaces Funding City of Dubuque in 240 alleys throughout the Engineering Over More than 5 city Department $1,000,000 yrs Dubuque - 10 Improvements necessary to Funding City of Dubuque 3-5 yrs the storm sewer on 22nd Engineering Over $1,000,000 street Department Dubuque - 11 Improvements necessary to Funding City of Dubuque 3-5 yrs the storm sewer on 17th Engineering Over street Department $1,000,000 Dubuque - 12 Funding City of Dubuque 3-5 yrs Engineering Over Department $1,000,000 Dubuque - 13 Funding City of Dubuque Engineering Over More than 5 Department $1,000,000 yrs Dubuque - 14 Funding City of Dubuque Water Plant Over More Manager $1,000,000 than 5 yrs Dubuque - 15 The Ice Arena currently City of Dubuque Mystique FEMA Grant $10,000 to 3-5 yrs serves as a cooling center Leisure Services Ice Center $50,000 Will ensure residents during extreme heat events, and EMA have a place go to but during peak energy usage stay cool during hours, the Arena may be extreme heat forced to accept a power events interruption. Providing a backup generator to the facility will ensure continued operation as a community cooling center. Dubuque - 16 NA City of Dubuque Unknown Little or no 3-5 yrs Planning Services cost Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 258 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Dubuque - 17 Funding Dubuque GIS General funds Less than 3-5 yrs $10,000 Dubuque - 18 Funding City of Dubuque General funds Less than 1 yr Information $10,000 Services Manager Dubuque - 19 Maintenance of existing None currently Public Private General funds $10,000 to 3-5 yrs generator equipment helps Works/Water/Water generator $50,000 assure that the equipment will and Resources service perform as designed when Recovery Center/Fire contractors needed. Building/Leisure Services Dubuque - 20 Funding City of Dubuque Unknown Little or no 1 yr EOC Committee cost and Department Heads Dubuque - 20 Funding EMA Unknown Little or no 3-5 yrs cost Dubuque - 21 Funding Dubuque Housing Unknown Less than 3-5 yrs Services $10,000 Dubuque - 22 Maintenance of the existing Additional Dubuque Public US Army FEMA Grant, Over Reduce damage and More flood control system helps funding to Works/Engineering Corps of General $1,000,000 loss business due to than ensure that the equipment will maintain the Dept. Engineer s funds, In -Kind Mississippi River 5 yrs perform as designed when existing flood flooding needed. The Bee Branch control system gates have been identified as a project in need of replacement. The gates and pumping system were in place prior to the construction of the flood control system and is need of replacement and upgrades. Design of the "T" walls are also under review. Funding City of Dubuque Unknown Little or no 3-5 yrs Dubuque - 23 Planning Services cost Dubuque - 24 Funding City of Dubuque Unknown Less than 3-5 yrs Public Works and $10,000 Engineering Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 259 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Dubuque - 28 Funding City of Dubuque Unknown Little or no 3-5 yrs Engineering cost Department Dubuque - 29 Funding City of Dubuque Unknown Less than 3-5 yrs Public Works and $10,000 Engineering Dubuque 30 Funding City of Dubuque Unknown Less than 3-5 yrs Engineering $10,000 Department Dubuque - 31 Funding City of Dubuque Unknown $500,000 to 3-5 yrs Engineering $1,000,000 Department Funding City of Dubuque Unknown Over 3-5 yrs Dubuque - 32 Planning Services $1,000,000 Dubuque - 33 Funding City of Dubuque $500,000 to 3-5 yrs Public Works and $1,000,000 Engineering Dubuque - 34 NA Dubuque Planning Unknown Little or no 3-5 yrs Services Manager cost City of Dubuque Public Federal funds; Decreased Dubuque - 35 Structures in the floodplain will Funding Works and Engineering general funds $500,000 to impacts and be removed if located in a $1,000,000 damage in vulnerable area vulnerable areas 3-5 yrs Dubuque - 36 Dubuque — 37 Dubuque— Parks & $1.5M grant Reduce heat 3-5 years 38 Recreation Manager Dubuque— Funding/staff Public General funds Less than Better preparedness 1-3 years 39 Information $10,000 Durango - 1 NA Durango Mayor FEMA Grant, Less than 3-5 yrs and EMA General funds $10,000 Durango - 2 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 260 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Funding Durango Mayor General funds $10,000 to More Durango - 3 $50,000 than 5 yrs Durango - 4 Durango City Unknown $50,000 to 3-5 yrs Council $100,000 Durango — 5 NA Durango Mayor Unknown Little or no 3-5 yrs cost Durango — 6 Funding City of Durango Unknown $500,000 to 3-5 yrs Mayor, Council and $1,000,000 ECIA City of Durango Mayor, Federal funds; Decreased Durango — 7 Structures in the floodplain will Funding Council and ECIA general funds g $500,000 to impacts and 3-5 yrs be removed if located in a $1,000,000 damage in vulnerable area vulnerable areas Durango - 8 Funding Dubuque Co General funds Little or no 1 yr EMA cost Dyersville - 1 Funding Dyersville City General funds $10,000 to 3-5 yrs Administrator $50,000 Dyersville - 2 Funding Dyersville/Planning Unknown $10,000 to 3-5 yrs & Zoning/City Staff $50,000 Dyersville - 3 Funding Dyersville/Planning Unknown Little or no 3-5 yrs & Zoning/City Staff cost Dyersville - 4 Funding Dyersville/Planning Unknown Little or no 3-5 yrs & Zoning/City Staff cost Funding Dyersville/Planning Unknown $10,000- 3-5 yrs Dyersville - 5 & Zoning/City Staff $25,000 Dyersville - 6 Funding Dyersville City General funds Little or no 3-5 yrs Administrator cost Dyersville — 7 Funding City of Dyersville General funds $100,000 to 1 yr Administrator $500,000 Dyersville — 8 Funding Dyersville EMA and General funds Over 3-5 yrs City Administrator $1,000,000 Dyersville — 9 Funding Dyersville City Unknown Over 3-5 yrs Administrator $1,000,000 Dyersville —10 Funding Dyersville City Unknown Little or no 3-5 yrs Administrator cost Dyersville —11 Funding Dyersville City General funds $500,000 to 3-5 yrs Administrator $1,000,000 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 261 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Dyersville Continue to Funding Dyersville EMA and Unknown Little or no 3-5 yrs Dyersville —12 encourage the National City Administrator cost Weather Service to add a weather transmitter tower to their system or relocate their existing tower to better serve the city. Dyersville —13 Funding Dyersville City Unknown Little or no 3-5 yrs Administrator cost Funding Dyersville Public Unknown $10,000 to 3-5 yrs Dyersville —14 Works $50,000 Dyersville —15 Funding Dyersville City Unknown Over 3-5 yrs Administrator $1, 000,000 Dyersville —16 Funding Dyersville Public General funds Little or no 3-5 yrs Works cost Dyersville —17 Weather spotters provide a Funding Dubuque County General funds Little or no 1 yr valuable service during a Emergency cost severe weather event. The Management community will support continued training of these weather spotters as new people become interested in learning these skills Dyersville —18 Funding Dyersville EMA and General funds Little or no 1 yr City Administrator cost Funding Dyersville City General funds $10,000 to More Dyersville —19 Administrator $50,000 than 5 yrs Dyersville — 20 Dyersville/Planning Unknown $50,000 to 3-5 yrs & Zoning/City Staff $100,000 Dyersville — 21 NA Dyersville City Unknown $100,000 to 3-5 yrs Administrator $500,000 Dyersville — 22 Funding Dyersville City General funds Less than 3-5 yrs Administrator $10,000 Dyersville — 23 Funding Dyersville City General funds Little or no 1 yr Administrator cost Dyersville — 24 Funding Dyersville City General funds Less than 1 yr Administrator $10,000 Funding Dyersville City Unknown $50,000 to 3-5 yrs Dyersville — 25 Administrator $100,000 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 262 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Dyersville — 26 Funding Dyersville City Unknown $500,000 3-5 yrs Administrator Dyersville — 27 River and creeks have not been In progress Dyersville City FEMA $250,000 1 -3 years maintained for years and new Administrator FEMA grant practice will help reduce flood impacts & damage due to flash flood events. Epworth - 1 Funding Epworth Public General funds Over 3-5 yrs Works $1, 000,000 Epworth - 2 Reduce effects of flooding Costs Epworth Public None General funds $500,000 to Property loss 3-5 yrs Works identified $1,000,000 avoidance Epworth - 3 NA Epworth City Unknown Less than 3-5 yrs Council $10,000 Epworth - 4 NA Epworth Public FEMA Grant, Less than 3-5 yrs Works General funds $10,000 Epworth - 5 NA Epworth City Unknown Little or no 1 yr Council cost Epworth - 6 NA Epworth Fire Unknown Less than 3-5 yrs Department and $10,000 EMA Epworth - 6 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Epworth - 7 Weather spotters provide a Funding Dubuque County General funds Little or no 1 yr valuable service during a Emergency cost severe weather event. The Management community will support continued training of these weather spotters as new people become interested in learning these skills Epworth - 8 Funding Epworth Clerk and General funds Little or no 1 yr Fire cost Epworth - 9 Epworth City Unknown $50,000 to 3-5 yrs Council $100,000 Epworth - 10 Epworth Continue to conduct Epworth Fire Unknown Little or no 1 yr education programs at schools cost during Fire Prevention Week Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 263 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Epworth - 11 To offer shelter to vulnerable Awareness Epworth Public Volunteer s, In -Kind Little or no Ensuring safety of 2-3 yrs populations in the event of and lack of Works City officials cost citizens extreme heat or transport tornado/windstorm Epworth - 12 Backup power to sewer lift Cost Epworth Public None General funds Less than Portable units 3-5 yrs stations Works identified $10,000 allow for use where need it Epworth - 13 Recovery Plan and relocation Unknown Epworth Mayor and City FEMA Grant, $10,000 to Avoid interruption of 1 yr for temporary operations City Council officials General $50,000 city services and funds, In -Kind response Epworth - 14 NA Epworth City Unknown Little or no 3-5 yrs Council cost Epworth - 15 Funding Public Works General funds Less than 3-5 yrs $10,000 Epworth - 16 All departments General funds Less than 1 yr $10,000 Federal funds; Decreased Epworth - 17 Structures in the floodplain will Funding Epworth City general funds $500,000 to impacts and 3-5 yrs be removed if located in a Council $1,000,000 damage in vulnerable area vulnerable areas Need to elevate lift station out Funding Public Works None General funds $50,000 to Reduce flooding of 3-5 yrs Farley - 1 of flood zone and add curb identified $100,000 properties during and gutters to street in flood heavy rain events. zone. Also need to increase culvert size. Farley — 2 During heavy rains, our Funding Farley Public None General funds $50,000 to Avoid untreated More waste water treatment plant Works identified $100,000 wastewater getting than sometimes floods causing into stream 5 yrs untreated wastewater to get into the stream. Farley — 3 Properties flood during major Funding Farley Public None General funds $100,000 to Reduce flooding of 3-5 yrs rain events Works identified $500:000 properties during heavy rain events. Farley — 4 Farley City Council Unknown $50,000 to 3-5 yrs $100,000 Farley — 5 NA Farley City Council Unknown General funds Little or no ALL 3-5 yrs cost Farley 6 Infrastructure cannot be easily None Farley City Clerk None General funds Less than Water and sewer 3-5 yrs located due to outdated and identified $10,000 infrastructure will be incomplete maps. more easily accessible. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 264 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Farley — 7 Farley — All None General funds Less than 1 year departments identified $1,000 Farley — 8 Farley — Fire Chief Funding FEMA/General $50,000 3-5 years funds Farley -- 9 Funding Dubuque Co General funds Little or no 1 yr EMA cost Graf — 1 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Graf — 2 Funding Graf Mayor General funds Little or no 1 yr cost Funding Graf Mayor General funds $10,000 to More Graf — 3 $50,000 than 5 yrs Graf — 4 NA Graf Mayor Unknown Little or no 3-5 yrs cost Graf — 5 Funding Graf City Clerk General funds Less than 1 yr $10,000 Federal funds; Decreased Graf - 6 Structures in the floodplain will Funding Graf Mayor general funds $500,000 to impacts and 3-5 yrs be removed if located in a $1,000,000 damage in vulnerable area vulnerable areas Local Fund Graf — 7 Limited EMS personnel and time None Graf City Clerk Little or no 1 yr o respond to emergency. cost Holy Cross - 1 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Holy Cross - 2 Funding Holy Cross Fire Unknown Less than 3-5 yrs and Dubuque EMA $10,000 Holy Cross - 3 Weather spotters provide a Funding Dubuque County General funds 1 yr valuable service during a Emergency Little or no severe weather event. The Management cost community will support continued training of these weather spotters as new people become interested in learning these skills Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 265 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Holy Cross - 4 NA Holy Cross Mayor Unknown $10,000 to 3-5 yrs $50,000 Holy Cross — 9 Funding Dubuque Co EMA General funds Little or no 1 yr cost Luxemburg - 1 NA Luxemburg Mayor FEMA Grant, Less than 3-5 yrs and Council General funds $10,000 Luxemburg - 2 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Luxemburg - 3 NA Luxemburg City Unknown $500,000 to 3-5 yrs Council $1,000,000 Luxemburg - 4 Funding Luxemburg Mayor Unknown $10,000 to 1 yr and Council $50,000 Funding Luxemburg Mayor General funds $10,000 to More Luxemburg - 5 and Council $50,000 than 5 yrs Luxemburg - 6 Luxemburg City Unknown $50,000 to 3-5 yrs Council $100,000 Luxemburg - 7 NA Luxemburg Mayor Unknown $10,000 to 3-5 yrs and Council $50,000 Luxemburg - Funding Dubuque Co EMA General funds Little or no 1 yr g cost New Vienna - We do not have a generator at Funding City of New Vienna Volunteer General funds $10,000 to 3-5 yrs 1 station for a prolonged event fire fighters $50,000 New Vienna -2 Some sewer lines not large Funding City of New Vienna None General funds $50,000 to 3-5 yrs enough identified $100,000 New Vienna - Some people do not have Funding Dubuque County None FEMA Grant, Less than 3-5 yrs 3 weather alert radios Emergency identified General funds $10,000 Management New Vienna - Funding New Vienna Public General funds Little or no 3-5 yrs Works cost New Vienna - NA New Vienna City Unknown Little or no 1 yr 5 Council cost New Vienna - NA New Vienna Fire Unknown Little or no 3-5 yrs 6 Department and cost Police Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 266 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Weather spotters provide a None Dubuque County General funds Little or no 1 yr New Vienna - valuable service during a Emergency cost 7 severe weather event. The Management community will support continued training of these weather spotters as new people become interested in learning these skills New Vienna - NA New Vienna City Unknown Little or no 3-5 yrs 8 Council cost New Vienna - Need a place with air New Vienna Fire None General funds Less than 3-5 yrs 9 conditioning for people to go to Department and identified $10,000 cool off if power outage occurs Police New Vienna -10 Funding New Vienna City Little or no 1 yr Council General funds cost New Vienna Funding New Vienna Public General funds Over More 11 Works $1,000,000 than 5 yrs New Vienna - No place for people to go to in Funding City of New Vienna None General funds $50,000 to 3-5 yrs 12 tornado event if they are at Ball identified $100,000 Diamond New Vienna - Cannot get to sewer plant if Funding City of New Vienna None General funds $50,000 to Other 13 creek floods Public Works identified $100,000 Director New Vienna - NA New Vienna Mayor Unknown $500,000 to 3-5 yrs 14 $1,000,000 New Vienna - Funding New Vienna Clerk General funds Less than 3-5 yrs 15 $10,000 New Vienna - Funding New Vienna Mayor General funds Little or no 1 yr 16 cost New Vienna - Funding New Vienna City General funds Less than 1 yr 17 Clerk $10,000 Federal funds; Decreased New Vienna - Structures in the floodplain will Funding New Vienna Mayor general funds $500,000 to impacts and 3-5 yrs 18 be removed if located in a $1,000,000 damage in vulnerable area vulnerable areas Funding Peosta City General funds $10,000 to 3-5 yrs Peosta - 1 Administrator and $50,000 Public Works Peosta - 2 Funding Peosta City General funds $500,000 to 3-5 yrs Administrator $1,000,000 Peosta - 3 NA Peosta Public FEMA Grant, Less than 3-5 yrs Works General funds $10,000 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 267 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Funding Dubuque County FEMA Grant, Less than 3-5 yrs Peosta - 4 Emergency General funds $10,000 Management Peosta - 5 Funding Peosta Public General funds Little or no 3-5 yrs Works cost Peosta - 6 Weather spotters provide a Funding Dubuque County General funds 1 yr valuable service during a Emergency Little or no severe weather event. The Management cost community will support continued training of these weather spotters as new people become interested in learning these skills Peosta - 7 Funding Peosta City General funds Little or no 1 yr Administrator cost Funding Peosta Public General funds $10,000 to More Peosta - 8 Works and City $50,000 than Administrator 5 yrs Peosta City Unknown $50,000 to 3-5 yrs Peosta - 9 Administrator and $100,000 Zoning Commission Peosta - 10 NA Peosta City Unknown Little or no 3-5 yrs Administrator and cost Clerk Peosta 11 Funding Peosta City Clerk General funds Less than 3-5 yrs and Administrator $10,000 Peosta - 12 Funding Peosta City General funds Less than 1 yr Administrator $10,000 Peosta - 13 Funding Peosta Public Unknown Less than 2-3 yrs Works $10,000 Peosta - 14 NA Peosta City Council Unknown Less than 3-5 yrs $10,000 Rickardsville Funding Rickardsville Mayor General funds $10,000 3-5 yrs -1 Rickardsville - NA Rickardsville Mayor FEMA Grant, Less than 3-5 yrs 2 General funds $10,000 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Rickardsville - Emergency General funds $10,000 3 Management Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 268 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Weather spotters provide a Funding Dubuque County General funds 1 yr Rickardsville - valuable service during a Emergency Little or no severe weather event. The Management cost community will support continued training of these weather spotters as new people become interested in learning these skills Rickardsville - Funding Rickardsville Mayor General funds Little or no 1 yr 5 cost Rickardsville - NA Rickardsville Mayor Little or no 1 yr 6 cost Rickardsville - Funding Rickardsville Mayor General funds $10,000 to More 7 $50,000 than 5 yrs Rickardsville - Rickardsville City $50,000 to 3-5 yrs 8 Council $100,000 Rickardsville - Funding Rickardsville Mayor General funds Less than 1 yr 9 $10,000 Sageville - 1 Funding City Clerk and $10,000 to 3-5 yrs ECIA $50,000 Sageville — 2 Funding Sageville Mayor General funds $500,000 to 3-5 yrs and Council $1,000,000 Sageville — 3 NA Sageville Mayor FEMA Grant, Less than 3-5 yrs General funds $10,000 Sageville — 4 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Sageville — 5 Weather spotters provide a Funding Dubuque County General funds Little or no 1 yr valuable service during a Emergency cost severe weather event. The Management community will support continued training of these weather spotters as new people become interested in learning these skills Sageville — 6 Funding Sageville City General funds Little or no 1 yr Council cost Funding Sageville Council General funds $10,000 to More Sageville — 7 $50,000 than 5 yrs Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 269 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Sageville — 8 Sageville City $50,000 to 3-5 yrs Council $100,000 Sageville — 9 NA Sageville Mayor Little or no 3-5 yrs and Council cost Federal funds; Decreased Sageville — 10 Structures in the floodplain will Funding Sageville Mayor general funds $500,000 to impacts and 3-5 yrs be removed if located in a and Council $1,000,000 damage in vulnerable area vulnerable areas Sherrill - 1 NA Sherrill Fire Less than 3-5 yrs Department $10,000 Sherrill - 2 Funding Sherill Mayor and General funds $10,000 to 3-5 yrs Council $50,000 Sherrill - 3 Funding Sherrill Mayor and General funds $500,000 to 3-5 yrs Council $1,000,000 Sherrill - 4 NA Sherill Fire FEMA Grant, Less than 3-5 yrs Department General funds $10,000 Sherrill - 5 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Sherrill - 6 Funding Sherrill Mayor and General funds Little or no 3-5 yrs Council cost Sherrill - 7 Weather spotters provide a Funding Dubuque County General funds Little or no 1 yr valuable service during a Emergency cost severe weather event. The Management community will support continued training of these weather spotters as new people become interested in learning these skills Sherrill - 8 Funding Sherrill City Council General funds Little or no 1 yr cost Funding Sherrill Council General funds $10,000 to More Sherrill - 9 $50,000 than 5 yrs Sherrill - 10 Sherrill City Council $50,000 to 3-5 yrs $100, 000 Sherrill - 11 Community needs to be NA Sherill Mayor and Little or no 3-5 yrs mapped Council cost Sherrill - 12 Funding Sherrill City Clerk General funds Less than 3-5 yrs $10,000 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 270 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Sherrill - 13 Funding Sherrill City Clerk General funds Less than 1 yr $10,000 Funding Worthington Public General funds $10,000 to 3-5 yrs Worthington - Works Director $50,000 1 Worthington - Funding Worthington Mayor General funds $500,000 to 3-5 yrs 2 and Council $1,000,000 Worthington - NA Worthington Public FEMA Grant, Less than 3-5 yrs 3 Works Director General funds $10,000 Funding Worthington Mayor General funds Little or no 3-5 yrs Worthington - and Council cost Worthington - Weather spotters provide a None Dubuque County City Hall General funds Little or no Potentially 1 yr 5 valuable Emergency cost lives/property service during a severe Management damage avoided weather event. The community will support continued training of these weather spotters as new people become interested in learning these skills Citizens need to be aware of None City Hall Fire Dept. General funds Little or no 1 yr Worthington - disasters to protect themselves, cost Potentially 6 others, and property lives/property damage avoided None Worthington Public Water/Se General funds 3-5 yrs Worthington - Works Director wer Little or no Lives/Property in 7 Depts. cost case of fires Worthington - During extreme heat incidents, NA Worthington Fire Less than g citizens Department and $10,000 need a safe, cool place to go City Clerk Funding Worthington Mayor 2-3 yrs Worthington - and Council $10,000 to 9 $50,000 Certain areas of City receive None Worthington Public None $10,000 to Worthington - heavy flooding Works Director identified General funds, $50:000 Home/Property More 10 Other -grants damage avoided than 5 yrs Worthington/ Mayor $50,000 to 3-5 yrs Worthington - & City Council $100,000 11 Worthington - NA Worthington Mayor Little or no 3-5 yrs 12 and Council cost Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 271 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Worthington If such a need arises, will Funding Worthington May FEMA FEMA $100,000+ 5+ years need to be addressed. and Council 13 Worthington — Increasing cybersecurity threats. Funding Worthington City General funds Less than 1 yr 14 Clerk $10,000 Worthington - Decrease Flash Flood Risk Funding Public Works General funds Less than 1 yr 15 $10,000 Federal funds; Decreased Worthington - Structures in the floodplain will Funding Worthington Mayor general funds $500,000 to impacts and 3-5 yrs 16 be removed if located in a and Council $1,000,000 damage in vulnerable area vulnerable areas Funding Zwingle Mayor General funds $10,000 to 3-5 yrs Zwingle - 1 $50,000 Funding Zwingle Mayor General funds $500,000 to 3-5 yrs Zwingle - 2 $1,000,000 Zwingle - 3 NA Zwingle Mayor FEMA Grant, Less than 3-5 yrs General funds $10,000 Zwingle - 4 Funding Dubuque County FEMA Grant, Less than 3-5 yrs Emergency General funds $10,000 Management Zwingle - 5 Weather spotters provide a Funding Dubuque County General funds Little or no 1 yr valuable service during a Emergency cost severe weather event. The Management community will support continued training of these weather spotters as new people become interested in learning these skills Zwingle - 6 Funding Zwingle City General funds Little or no 1 yr Council cost Funding Zwingle Mayor 3-5 yrs Zwingle - 7 $10,000 to $100, 000 Zwingle - 8 Funding Zwingle Mayor General funds $10,000 to $50,000 More than 5 yrs NA Zwingle Mayor Zwingle - 9 Little or no 1 yr cost Zwingle City $50,000 to Zwingle - 10 Council $100,000 3-5 yrs Zwingle - 11 NA Zwingle Mayor Little or no 3-5 yrs cost Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 272 2024 Action ID Issue/ Background Obstacles to Responsible Partners Funding Cost Benefits Timeline Implementing Office Source(s) Estimate Zwingle - 12 Funding Zwingle Mayor General funds Less than 1 yr $10,000 SCHOOL DISTRICTS NA School administration Unknown Little or no 1 yr Dubuque cost Public School District - 1 Recent data breeches, cyber- Funding IT Local $50,000 - Secure data, prevent 1 -3 years Dubuque Public attacks. $100,000 cyber-attacks and leaks School District - of critical information 2 Funding Dubuque Co EMA General funds Little or no 1 yr Dubuque Public cost School District - 3 NICC Facilities Unknown $50,000 to 3-5 yrs NICC - 1 Director $100,000 Funding Dubuque Co EMA General funds Little or no 1 yr NICC - 2 cost NA WD School Little or no 1 yr Western administration cost Dubuque Public School District - 1 Funding Dubuque Co EMA General funds Little or no 1 yr Western cost Dubuque Public School District - 2 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 273 Table 4.3. Action Prioritization 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits MDamage? response Exceed > actions? Cost? C> h S_ V O O L E IC c f) H Q IL J W W 0-unlikely, 1-maybe, 2-probably, or3-definitely Positive (1) Neutral (0) Negative (-1) Unincorporated Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M County - 1 critical facilities. Unincorporated Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. County - 2 Unincorporated Purchase barricades and signage as deemed 2 1 0 3 1 1 -1 1 0 1 1 10 M County - 3 necessary to better communicate information. Unincorporated Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M County - 4 Unincorporated Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H County - 5 hazardous weather through newsletters, public notices, strolling signs, etc. Unincorporated Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M County - 6 construction. Unincorporated Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M County - 7 required. Unincorporated Acquire permanent and portable generators and 2 1 0 2 1 -1 1 1 1 -1 -1 6 L County - 8 infrastructure necessary to operate generators as deemed necessary by the County to provide power in the event of a power failure. Unincorporated Maintain the Business Continuity Plan to address 1 1 1 2 1 1 1 1 1 0 1 11 M County - 9 day-to-day County business operations. Unincorporated Continue to enforce the Floodplain Ordinances and 2 3 2 3 1 1 1 1 1 1 1 17 H County — 10 monitor all construction activities that are in or near a flood lain. Unincorporated Continue to support the efforts of the COG in their 1 3 2 2 1 1 1 1 1 1 1 15 H County — 11 mitigation actions to reduce flooding of the Little Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 274 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _J w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Maquoketa River basin. Unincorporated Continue to support the efforts of the NRCS in 1 3 2 2 1 1 1 1 -1 1 1 13 H County — 12 Dubuque County to reduce flooding in flood prone areas and provision of educational information to farmers and use of BMPs. Unincorporated Continue to maintain, promote, and administer 1 3 2 2 1 1 1 1 1 1 1 15 H County — 13 storm water retention ordinances with other jurisdictions and update as needed. Unincorporated Continue to identify probable areas for potential 1 0 1 2 1 1 1 1 1 1 1 11 M County — 14 hazards, assess traffic capacity of highways and roads, and identify shelters for the hazards and develop best routes for evacuations. Unincorporated Continue to maintain awareness of repetitive loss 2 3 3 2 1 0 0 1 1 1 1 15 H County — 15 properties to identify potential areas of risk to life and safety of residents and consider pursuing grant funds for the acquisition and demolition of these properties. Unincorporated Continue public awareness campaign, including 3 0 2 3 1 1 1 1 1 1 1 15 H County — 16 educational programming, marketing, and public service announcements, and advertising to inform the public to proper procedure during a flood. Unincorporated Modify the Flood Plain Management Ordinance as 1 3 2 3 1 1 1 1 1 1 1 16 H County — 17 necessary with a target of alleviating flooding. Unincorporated Purchase more barriers and floodgates to better 3 0 2 3 1 1 1 1 1 0 1 14 H County — 18 block and inform drivers of flooded areas. Unincorporated Install river gauges and/or river stream sensors to 1 0 2 2 1 0 1 1 1 -1 1 9 M County — 19 measure the height of water and better enable the County to monitor river levels and potential flooding. Maintain Community Alert Network system that 2 0 2 2 1 1 1 1 1 1 1 13 H Unincorporated includes the auto -dial potential for all households County — 20 and businesses in the line of a severe storm. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 275 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Unincorporated Continue program to educate residents on NOAA 2 0 2 2 1 1 1 1 1 1 1 13 H County — 21 indoor weather radios and provide a rebate program for a portion of the purchase price for residents or distribute as available. Unincorporated Continue to monitor public roads of concern that 1 1 2 2 1 -1 -1 1 1 1 1 9 M County — 22 may require maintenance or rebuilding and repair or rebuild as deemed necessary. Unincorporated Maintain, enhance, or install GIS System to better 1 1 1 3 1 1 1 1 1 0 1 12 M County — 23 track critical facilities and vulnerable populations as well as respond to emergencies. Unincorporated Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M County — 24 prevent loss in the event of hazard. Unincorporated Buy out, acquire, and demolish damaged, 1 1 1 2 1 1 1 1 1 -1 1 10 M Count — 25 vulnerable, or endangered structures. Unincorporated Purchase and install snow plow cameras 1 3 1 3 1 1 1 1 1 1 1 15 H County - 26 Unincorporated River and creek restoration to reduce flood 1 1 1 1 1 1 1 1 1 1 1 11 M Count — 27 impacts and damages. Asbury -1 Provide backup power generators and wiring for 1 2 2 2 1 1 1 1 1 0 0 12 M critical facilities. Asbury - 2 Add lift stations, increase/reinforce culvert size, 1 2 3 1 1 0 0 0 0 0 1 9 L and add curb and gutters to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Asbury - 3 Continue to maintain existing outdoor warning siren 2 0 3 3 1 1 1 1 1 1 1 15 H systems and ensure appropriate coverage for population. Asbury — 4 Utilize barricades and signage as deemed 2 1 3 3 1 1 1 1 1 1 1 16 H necessary to better communicate information. Asbury — 5 City personnel are trained as weather spotters. 1 1 2 3 1 1 1 1 1 1 1 14 M Asbury — 6 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 M hazardous weather through newsletters, social media, and public service announcements. Asbury — 7 Continue to add needed infrastructure to mitigate 1 1 1 1 0 -1 -1 1 1 0 1 5 L flood damage. sbury — 8 Continue to maintain snow removal policy, 1 1 2 3 1 1 1 1 1 0 0 12 M including no parking on city streets within 48 hours Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 276 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0) a. _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) of a severe winter storm. Asbury — 9 Continue to make the library available as a shelter 1 0 1 3 1 1 1 1 1 1 1 12 M space to persons in need on a temporary basis during periods of extreme heat. Asbury — 10 Maintain NFIP membership and meet all program 0 0 0 3 0 0 0 0 1 1 0 5 L requirements. Asbury — 11 Continue to use City Hall as a storm shelter and to 1 0 1 3 1 1 1 1 1 1 1 12 M consider the building of a safe room. Asbury — 12 Build new lift stations with generators in place as 0 2 1 2 0 0 0 0 0 1 1 7 L determined by the City's continued growth. Asbury — 13 Maintain procedure to backup all critical data to 0 2 2 3 1 1 1 1 1 1 0 13 H prevent loss in the event of hazard. Asbury — 14 Refrain from issuing burn permits in times of 1 2 1 3 0 0 0 0 0 0 1 8 L extreme heat or drought to prevent fires. Asbury — 15 Maintain, enhance, or install GIS System to better 1 1 1 1 0 -1 -1 1 1 -1 0 3 L track critical facilities and vulnerable populations as well as respond to emergencies. Asbury — 16 Buy out, acquire, and demolish damaged, 1 2 1 2 1 -1 -1 -1 0 0 1 5 L vulnerable, or endangered structures Balltown — 1 Obtain NOAA weather radios for every home in 1 1 1 1 1 1 1 1 1 1 1 11 M Dubuque County. Balltown - 2 Create and maintain call down list of all critical 1 0 1 1 1 0 -1 1 1 1 0 6 L personnel. Balltown - 3 Maintain procedure to backup all critical data to 0 2 2 3 1 1 1 1 1 1 0 13 H prevent loss in the event of hazard. Balltown — 4 Join and maintain NFIP membership 0 0 0 3 0 0 0 0 1 1 0 5 L Balltown - 5 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Bankston - 1 Reconnect the city's weather siren. 2 0 1 1 1 -1 -1 0 0 -1 0 3 L Bankston — 2 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 277 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)0.J W W 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) notices, strolling signs, etc. Bernard - 1 Purchase or elevate structures, add lift stations, 0 2 2 3 1 0 -1 0 0 0 0 7 L increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Bernard - 2 Continue to maintain existing outdoor warning 2 0 1 1 1 -1 -1 0 0 -1 0 3 L siren systems and ensure appropriate coverage for population. Bernard - 3 Obtain NOAA weather radios for every home in 1 1 1 1 1 1 1 1 1 1 1 11 M Dubuque County. Bernard - 4 Purchase barricades and signage as deemed 1 2 1 2 1 -1 -1 -1 0 0 1 5 L necessary to better communicate information. Bernard - 5 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Bernard - 6 Continue to improve public awareness of 1 2 1 2 1 1 1 1 1 0 1 12 M hazardous weather through newsletters, public notices, strolling signs, etc. Bernard — 2 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Bernard — 8 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Bernard — 9 Develop resources to protect people & property 1 1 2 3 1 1 1 1 1 1 1 14 H from hazardous materials Identify a location for public shelter in the event 3 1 2 3 1 1 1 1 1 1 1 16 H Bernard — 10 of a hazard or disaster, and stock it to ensure adequate for use as a shelter Prepare for flash flooding through physical 1 2 2 3 1 1 1 0 1 1 1 14 H Bernard — 11 diversion, maintenance, and other activities to reduce water collection load Bernard — 12 Maintain NFIP membership and meet all program 0 1 1 2 1 1 1 1 1 1 1 11 M requirements. Bernard — 13 Maintain, enhance, or install GIS System to 1 1 1 3 1 1 1 1 1 0 1 12 M better track critical facilities and vulnerable populations as well as respond to emergencies. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 278 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)0. J W W 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Purchase backup generators and install hookups 0 1 2 2 1 0 0 1 1 -1 1 8 M Bernard - 14 to provide electricity for the water supply and the main pumping station in the event of a power outage. Continue to make Emergency Medical Services 1 0 2 2 1 1 1 1 1 1 1 12 M Bernard 15 building available in the event of a hazardous weather. Bernard — 16 Create and maintain call down list of all critical 1 0 1 3 1 1 1 1 1 1 1 12 M personnel. Bernard - 17 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Cascade - 1 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Purchase or elevate structures, add lift stations, 0 2 2 3 1 0 -1 0 0 0 0 7 L Cascade - 2 increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Cascade - 3 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Cascade - 4 Purchase barricades and signage as deemed 2 1 0 3 1 1 -1 1 0 1 1 10 M necessary to better communicate information. Cascade - 5 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Cascade - 6 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Cascade - 7 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Cascade - 8 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. Cascade - 9 Maintain, enhance, or install GIS System to 1 1 1 3 1 1 1 1 1 0 1 12 M better track critical facilities and vulnerable populations as well as respond to emergencies. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 279 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Cascade - 10 Continue to contact Dyersville and other 1 0 1 2 1 1 1 1 1 1 1 11 M communities to monitor flood levels upstream; obtain stream gauges for Cascade Cascade - 11 Continue to enforce floodplain management 1 2 2 3 1 1 1 1 1 1 1 15 H ordinances Cascade - 12 Create and maintain call down list of all critical 1 0 1 3 1 1 1 1 1 1 1 12 M personnel. Cascade - 13 Pursue application for future FEMA and State 2 3 3 2 1 0 0 0 0 -1 0 10 M Funding for flood buyouts. Cascade - 14 Continue to maintain and operate current outdoor 2 0 1 2 1 1 1 1 1 1 1 12 M weather warning system. Cascade - 15 Continue training weather spotters through 1 2 1 2 1 1 1 1 1 1 1 13 H Cascade Fire Department. Cascade - 16 Install electrical distribution lines underground. 1 2 3 3 1 1 1 1 1 1 1 16 H Cascade - 17 Pursue active maintenance in checking storm 1 2 2 3 1 1 1 1 1 1 1 15 H sewer system for debris. Cascade — 18 Rebuild or upgrade floodgates and culverts to 1 2 1 2 1 -1 0 1 1 -1 1 8 M prevent flooding. Cascade — 19 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Cascade — 20 Buy out, acquire, and demolish damaged, 3 3 3 1 1 1 1 1 1 1 18 vulnerable or endangered structures 2 H Centralia — 1 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Centralia - 2 Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H siren systems and ensure appropriate coverage for population. Centralia - 3 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Centralia - 4 Purchase barricades and signage as deemed 2 1 0 3 1 1 -1 1 0 1 1 10 M necessary to better communicate information. Centralia - 5 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 280 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)0.J W W 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Centralia - 6 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Centralia - 7 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Centralia - 8 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Centralia - 9 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Dubuque-1 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Purchase or elevate structures, add lift stations, 0 2 2 3 1 0 -1 0 0 0 0 7 L Dubuque - 2 increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Continue to maintain existing outdoor warning 3 1 3 3 1 1 1 1 0 1 0 15 H Dubuque - 3 siren systems and ensure appropriate coverage for population. Dubuque - 4 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Dubuque - 5 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Dubuque - 6 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Dubuque - 7 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Flood Mitigation Gate Replacement Bee Branch 1 3 3 2 1 1 1 1 1 1 1 16 H Dubuque - 8 stormwater pump station & gate replacements 161h Street Detention Basin Dubuque - 9 Impervious Surface Reduction (240 Alleys) 1 3 3 2 1 1 1 1 1 1 1 16 H Dubuque - 10 22nd Street/Kaufmann Avenue Storm Sewer 1 3 3 2 1 1 1 1 1 1 1 16 H Improvements Dubuque - 11 17th Street/W. Locust St Storm Sewer 1 3 3 2 1 1 1 1 1 1 1 16 H Improvements Dubuque — 12 Flood Mitigation Maintenance Facility 1 3 3 2 1 1 1 1 1 1 1 16 H Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 281 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Dubuque — 13 North End Storm Sewer Improvement (25th - 1 3 3 2 1 1 1 1 1 1 1 16 H 30th Streets) Dubuque — 14 Water Plant Flood Control (F000dwall and 1 3 3 2 1 1 1 1 1 1 1 16 H Stormwater Conveyances) Dubuque — 15 Back -Up Power for Cooling Center at Ice Arena 2 0 1 2 1 1 1 1 1 0 0 10 M Dubuque — 16 Maintain NFIP membership and meet all program 0 1 1 2 1 1 1 1 1 1 1 11 M requirements. Dubuque — 17 Maintain, enhance, or install GIS System to 1 1 1 3 1 1 1 1 1 0 1 12 M better track critical facilities and vulnerable populations as well as respond to emergencies. Dubuque — 18 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Continue to maintain 25 existing generators and 1 3 3 3 1 1 1 1 1 1 1 17 H Dubuque — 19 infrastructure to operate city facilities in the event of a power outage. Dubuque— 20 Maintain a Business Continuity Plan to address 0 1 1 2 1 1 1 1 1 1 1 11 M day-to-day City business operations. Continue to promote the use of NOAA indoor 1 0 1 2 1 1 1 1 1 1 1 11 M Dubuque — 21 weather radios at residences, schools, hospitals, nursing homes, etc., throughout the city. Dubuque— 22 Continue to maintain, enforce and update 1 2 1 3 1 1 1 1 1 1 1 14 H building codes as needed. Restore the Bee Branch Creek with open channel 2 3 3 3 1 1 1 1 1 1 1 18 H Dubuque — 23 from the 24th St. Neighborhood to E. 16th St retention basin, including the acquisition of about 70 homes. Dubuque — 24 Continue ongoing maintenance and monitoring 2 3 2 2 1 1 0 1 1 1 1 15 H of the City's flood control system (floodwall) as mandated by federal law. Dubuque— 25 Maintain awareness of repetitive loss properties to 1 1 1 2 0 0 0 1 1 -1 1 7 L identify potential areas of risk to life and safety of residents and consider pursuing grant funds for the acquisition and demolition of these properties. Make required improvements based on the 1 1 1 2 1 1 1 1 1 1 1 12 M Dubuque — 26 outcome of the Levee Flood Certification. Dubuque— 27 Continue to update and maintain Levee Breech Study 1 2 1 2 1 1 1 1 1 -1 1 11 M to determine scenarios in the event of levee failure. Dubuque 28 Maintain and repair storm sewers as necessary. 1 2 2 2 1 1 1 1 1 1 1 14 H Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 282 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed `��° 6i actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C L 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Dubuque — 29 Continue to monitor public retaining walls of 1 2 2 2 0 0 0 0 0 0 1 8 M concern that may require maintenance or rebuilding. Dubuque— 30 Evaluate ownership and work with responsible 1 2 1 3 0 -1 0 1 1 1 0 9 L entities to mitigate any hazardous situations related to retaining walls in the City. Dubuque— 31 Continue to work with FEMA to buyout flood 0 3 3 2 0 1 1 1 1 1 1 14 H damaged homes. Dubuque— 32 Continue to implement storm water management 1 2 2 2 1 1 1 1 1 1 1 14 H and flood control improvements outlined in the Drainage Basin Master Plan Dubuque — 33 Continue to maintain floodplain management 1 2 1 3 1 1 1 1 1 1 1 14 H ordinances. Dubuque — 34 Buy out, acquire, and demolish damaged, 2 3 3 3 1 1 1 1 1 1 1 18 H vulnerable or endangered structures Dubuque— 35 Purchase and install generator and equipment for 2 0 1 2 1 0 0 1 0 0 0 7 L Multi -Cultural Family Center as a community shelter. Dubuque— 36 Purchase and install infrastructure facilities and 2 0 1 2 1 0 0 1 0 0 0 7 L equipment for additional community shelters, especially for vulnerable populations using a Resilience Hub mode to build community capacity. Dubuque— 37 Make railroad crossing improvements to protect 2 2 2 3 1 1 1 1 1 0 0 14 H water plant, residential neighborhoods. Dubuque— 38 Increase tree canopy to reduce urban heat island 1 0 1 3 1 1 1 1 1 1 1 12 M effect, protect from severe weather events. Durango - 1 Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H siren systems and ensure appropriate coverage for population. Durango - 2 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Durango - 3 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Durango - 4 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Durango - 5 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 283 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)0. J W W 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Continue dialog with Dubuque County & DNR 1 1 2 2 1 1 1 0 1 1 1 12 M Durango - 6 regarding flood mitigation pertaining to depth/width and debris in nearby waterways, and implement any solutions identified Durango - 7 Continue to pursue flood mitigation including 1 3 3 3 1 0 0 1 1 -1 1 13 H buyouts. Durango - 8 Buy out, acquire, and demolish damaged, 2 3 3 3 1 1 1 1 1 1 1 18 H vulnerable or endangered structures Durango - 9 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Dyersville - 1 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Dyersville - 2 Continue to address storm water runoff through 1 3 2 3 1 1 1 1 1 1 1 16 H development agreements for all commercial industrial and residential subdivision developments. The Planning & Zoning Commission, along with City staff, will review developments and work to assure storm water runoff issues are addressed in development agreements when appropriate. Dyersville - 3 Continue to enforce storm water ordinances. 1 2 2 3 1 1 1 1 1 1 1 15 H Continue to enforce Dyersville floodplain 1 2 2 3 1 1 1 1 1 1 1 15 H Dyersville - 4 ordinance and National Flood Insurance Program regulations. The City Administrator is designated as the local Floodplain Manager and enforcement person. Continue to closely monitor development of land 1 2 1 2 0 0 0 0 0 0 1 7 L Dyersville - 5 surrounding the city and potential for the creation of hazards to the city. The City Administrator will monitor and review land developments around the city and provide comments as appropriate. Continue to maintain storm sewer system 1 2 2 3 1 1 1 1 1 -1 1 13 H Dyersville - 6 including the dry runs that serve as open channel drainage ditches. Dyersville — 7 Continue to improve storm sewer system as a 1 2 2 2 1 1 1 1 1 -1 1 12 M component of the City's regular street improvement program. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 284 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)0.J W W 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Dyersville — 8 Continue to maintain and make improvements to 1 2 2 3 1 1 1 1 1 -1 1 13 H the sanitary sewer system to reduce infiltration, including such projects as the installation of bolt - down covers on manholes in the floodplain areas and inspections of lift stations seals, etc. in the flood plain. The Public Works Department Head will recommend improvements to the City Administrator for inclusion in the city budget as funding allows. Continue to work with appropriate agencies to 2 2 2 2 1 1 1 1 1 1 1 15 H Dyersville — 9 identify effective physical means to minimize flooding. Dyersville — 10 Continue to identify and publicize location and 3 0 2 2 1 1 1 1 1 1 1 14 H availability of storms shelters, and add new shelters as required and available Dyersville — 11 Purchase or elevate structures, add lift stations, 0 2 2 3 1 0 -1 0 0 0 0 7 L increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Continue to encourage the National Weather 1 0 1 2 1 0 0 -1 -1 0 0 3 L Dyersville — 12 Service to add a weather transmitter tower to their system or relocate their existing tower to better serve the City of Dyersville. Dyersville — 13 Continue to evaluate and monitor potential risks 1 2 2 2 1 1 1 1 1 1 1 14 H with utility placements. Dyersville — 14 Continue to remove dead trees/prune trees and 2 2 2 3 1 1 1 1 1 1 1 16 H clean areas vulnerable to high winds. The Public Works Department Head will monitor trees within City right-of-way and continue to remove dead trees/prune trees vulnerable to high winds. Dyersville — 15 Continue acquisition of flood -damaged 2 3 3 2 1 1 1 1 1 -1 1 15 H properties through current and future State - and FEMA- funded programs and/or other programs and marketing of the programs to floodplain residents. Dyersville — 16 Purchase barricades and signage as deemed 2 1 0 3 1 1 -1 1 0 1 1 10 M necessary to better communicate information. Dyersville — 17 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 285 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Dyersville — 18 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Dyersville — 19 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Dyersville — 20 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Dyersville — 21 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. Dyersville — 22 Maintain, enhance, or install GIS System to 1 1 1 3 1 1 1 1 1 0 1 12 M better track critical facilities and vulnerable populations as well as respond to emergencies. Dyersville — 23 Create and maintain call down list of all critical 1 0 1 3 1 1 1 1 1 1 1 12 M personnel. Dyersville — 24 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Continue flood watch protocol whereby river 2 1 1 2 1 1 1 1 1 1 1 13 H Dyersville — 25 elevations are regularly monitored during potential flood events. Included in this protocol is the need to purchase cameras to assist in monitoring river levels from remote locations. The protocol includes defined responses to the various river elevations. Dyersville — 26 River and creek restoration to reduce flood 1 3 3 3 1 1 1 1 1 1 1 17 H impacts and damages. Dyersville — 27 Complete flood study through BRIC grant to 2 3 2 2 1 0 0 1 1 0 1 13 H compile data identifying potential flood impact areas and a cost/benefit analysis for capital improvement projects. Epworth - 1 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Purchase or elevate structures, add lift stations, 1 3 2 3 1 1 1 1 1 1 1 16 H Epworth - 2 increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 286 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0) 1 4 1 a _j I w I w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Epworth - 3 Install back flow preventers in the new 1 2 2 2 1 0 0 0 0 0 1 9 M construction developments. Epworth - 4 Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H siren systems and ensure appropriate coverage or population. Epworth - 5 Continue to require underground burial of power 2 1 2 2 1 1 1 1 1 1 1 14 H lines in new subdivisions. Epworth - 6 Continue to utilize Fire Station for 3 0 2 3 1 1 1 1 1 1 1 15 H accommodations for persons suffering from extreme heat or wind-chill conditions. Epworth - 6 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Epworth - 7 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Epworth - 8 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Epworth - 9 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Epworth - 10 Continue to conduct education programs at 2 0 1 3 1 1 1 1 1 1 1 13 H schools during Fire Prevention Week. Epworth - 11 Identify and equip potential shelters in Epworth to 2 0 1 0 1 1 1 1 1 0 0 8 M provide safe locations for persons during an emergency Epworth - 12 Purchase backup generators for sewer lift 1 2 2 2 1 1 1 1 1 1 1 14 H stations Epworth - 13 Develop a hazard recovery plan that includes 2 1 0 3 1 1 1 1 1 1 0 12 M mitigation as part of the recovery process. Epworth - 14 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. Epworth - 15 Maintain, enhance, or install GIS System to better 1 1 1 3 1 1 1 1 1 0 1 12 M track critical facilities and vulnerable populations as well as respond to emergencies. Epworth - 16 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 287 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)0.J W W 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Epworth - 17 Buy out, acquire, and demolish damaged, vulnerable or endangered structures 2 3 3 3 1 1 1 1 1 1 1 18 H Purchase or elevate structures, add lift stations, 2 3 2 3 1 -1 0 0 1 1 1 13 H Farley - 1 increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Protect Waste Water Treatment Center from 2 3 2 3 1 0 1 0 1 0 1 14 H Farley — 2 Flooding by developing a retention/ detention area to the SW of the WWTP. Create a retention/ detention area to the SE of the WWTP with a bypass storm water pipe. Upgrade city storm sewer system to prevent 1 3 2 3 1 0 1 0 1 1 1 14 H Farley — 3 future residential, business, and city infrastructure flood damage. Farley — 4 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Farley — 5 Maintain NFIP membership and meet all program 0 1 1 2 1 1 1 11 M requirements. 1 1 1 1 Farley - 6 Maintain procedure to backup all critical data to 1 3 1 3 0 1 1 0 0 0 1 11 M prevent loss in the event of hazards. Farley — 7 Purchase and install power generator and hookup 1 0 1 1 1 1 1 1 1 -1 0 7 L at fire station to use in the event of an emergency. Farley - 8 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Graf - 1 Obtain NOAA weather radios for every home in 1 1 1 1 1 0 1 1 1 -1 1 8 M Graf. Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H Graf - 2 hazardous weather through newsletters, public notices, strolling signs, etc. Graf - 3 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Graf - 4 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Graf - 5 Maintain NFIP membership and meet all program 0 1 1 2 1 1 1 1 1 1 1 11 M requirements. Graf — 6 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 288 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Graf - 7 Buy out, acquire, and demolish damaged, vulnerable or endangered structures 2 3 3 3 1 1 1 1 1 1 1 18 H Holy Cross - 1 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Holy Cross - 2 Continue to pursue FEMA and other funding 2 0 1 3 1 1 1 1 1 1 1 13 H opportunities to replace weather siren. Holy Cross - 3 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Holy Cross - 4 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. Holy Cross - 5 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Luxemburg - 1 Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H siren systems and ensure appropriate coverage for population. Luxemburg - 2 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Continue Good Neighbor Program where 2 0 1 3 1 1 1 1 1 1 1 13 H Luxemburg - 3 volunteers check on welfare of residents following a severe weather event. Luxemburg - 4 Upgrade storm sewers to prevent flash flooding 2 3 3 2 1 1 1 1 1 1 1 17 H in times of heavy downfall of rain. Luxemburg - 5 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Luxemburg - 6 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Luxemburg - 7 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. Luxemburg - 8 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. New Vienna - 1 Provide backup power generators and wiring for 1 1 1 1 1 1 1 1 1 1 1 11 M critical facilities. New Vienna - 2 Purchase or elevate structures, add lift stations, 0 2 1 3 1 1 1 1 1 1 1 13 H increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 289 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) New Vienna - 3 Obtain NOAA weather radios for every home in 2 1 2 3 1 1 1 1 1 1 1 15 H Dubuque County. New Vienna - 4 Purchase barricades and signage as deemed 2 1 0 3 1 1 -1 1 0 1 1 10 M necessary to better communicate information. New Vienna - 5 Establish Good Neighbor program for winter 2 0 1 3 1 1 1 1 1 1 1 13 H storms. New Vienna - 6 Continue to monitor river levels and areas that 2 1 2 2 1 1 1 1 1 1 1 14 H have experienced flash flooding in the past and add new stream gauges. New Vienna - 7 Train personnel as weather spotters. 2 2 2 2 1 1 1 1 1 1 1 15 H New Vienna - 8 Continue to enforce flood plain ordinances. 2 3 2 3 1 1 1 1 1 1 1 17 H Continue to utilize Mercy St. Mary's in Dyersville, 2 1 1 3 1 1 1 1 1 1 1 14 H New Vienna - 9 US Post Office, and VFW Club in New Vienna as facilities for individuals suffering from extreme heat. New Vienna - Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H 10 hazardous weather through newsletters, public notices, strolling signs, etc. New Vienna - Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H 11 flood damage. New Vienna - Consider building a tornado safe room for all new 3 1 1 3 1 1 1 1 1 1 1 15 H 12 construction. New Vienna - Build another access road on higher ground to 1 1 1 3 1 1 1 1 1 1 1 13 H 13 waste water treatment facility. New Vienna - Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M 14 required. New Vienna - Maintain, enhance, or install GIS System to 1 1 1 3 1 1 1 1 1 0 1 12 M 15 better track critical facilities and vulnerable populations as well as respond to emergencies. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 290 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)0.J W W 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) New Vienna - Create and maintain call down list of all critical 1 0 1 3 1 1 1 1 1 1 1 12 M 16 personnel. New Vienna - Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M 17 prevent loss in the event of hazard. New Vienna - Buy out, acquire, and demolish damaged, 2 3 3 3 1 1 1 1 1 1 1 18 H 18 vulnerable or endangered structures Peosta - 1 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Purchase or elevate structures, add lift stations, 0 2 2 3 1 0 -1 0 0 0 0 7 L Peosta - 2 increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Peosta - 3 Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H siren systems and ensure appropriate coverage for population. Peosta - 4 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Peosta - 5 Purchase barricades and signage as deemed 2 1 0 3 1 1 -1 1 0 1 1 10 M necessary to better communicate information. Peosta - 6 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Peosta - 7 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Peosta - 8 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Peosta - 9 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Peosta - 10 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. Peosta 11 Maintain, enhance, or install GIS System to 1 1 1 3 1 1 1 1 1 0 1 12 M better track critical facilities and vulnerable populations as well as respond to emergencies. Peosta - 12 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 291 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L E 15 ... O N c 0 C 0)0.J W W 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Peosta - 13 Trim trees or remove trees that are potential risk 1 2 2 2 1 1 1 1 1 1 1 14 H to city properties and infrastructures. Peosta - 14 Utilize the Peosta Community Centre as a shelter 3 0 1 2 1 1 1 1 1 1 1 13 H for persons suffering from Extreme Heat. Rickardsville -1 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Rickardsville -2 Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H siren systems and ensure appropriate coverage for population. Rickardsville -3 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Rickardsville -4 Train personnel and citizens as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Rickardsville -5 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Establish and maintain agreement with St. 3 0 1 2 1 1 1 1 1 1 1 13 H Rickardsville-6 Joseph Parish to designate church hall as shelter for the community in the event of extreme heat or other hazards. Rickardsville -7 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage at lagoon and baseball park Rickardsville -8 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Rickardsville -9 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Sageville — 1 Purchase or elevate structures, add lift stations, 0 2 2 3 1 0 -1 0 0 0 0 7 L increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Sageville — 2 Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H siren systems and ensure appropriate coverage for population. Sageville — 3 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 292 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Sageville — 4 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Sageville — 5 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Sageville — 6 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Sageville — 7 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Sageville — 8 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. Sageville — 9 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Sageville — 10 Continue to explore FEMA grants to buy out, 2 3 3 3 1 1 1 1 1 1 1 18 H acquire, and demolish damaged, vulnerable or endangered structures Utilize the Sherrill Fire Station with generator 3 0 1 2 1 1 1 1 1 1 1 13 H Sherrill — 1 back up to accommodate citizens in the community during extreme heat or wind chill conditions. Sherrill — 2 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Purchase or elevate structures, add lift stations, 0 2 2 3 1 0 -1 0 0 0 0 7 L Sherrill - 3 increase/reinforce culvert size and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Sherrill - 4 Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H siren systems and ensure appropriate coverage for population. Sherrill - 5 Obtain NOAA weather radios for every home. 2 1 2 3 1 0 0 0 0 -1 1 9 M Sherrill - 6 Purchase barricades and signage as deemed 2 1 0 3 1 1 -1 1 0 1 1 10 M necessary to better communicate information. Sherrill - 7 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Sherrill - 8 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 293 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Sherrill - 9 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. Sherrill - 10 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Sherrill - 11 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. Sherrill - 12 Maintain, enhance, or install GIS System to 1 1 1 3 1 1 1 1 1 0 1 12 M better track critical facilities and vulnerable populations as well as respond to emergencies. Sherrill - 13 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Worthington - 1 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Purchase or elevate structures, add lift stations, 0 2 2 3 1 0 -1 0 0 0 0 7 L Worthington - 2 increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Worthington - 3 Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H siren systems and ensure appropriate coverage for population. Worthington - 4 Purchase barricades and signage as deemed 2 1 0 3 1 1 -1 1 0 1 1 10 M necessary to better communicate information. orthington - 5 Train personnel as weather spotters. 2 2 1 3 1 1 1 1 1 1 1 15 H Worthington - 6 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Worthington - 7 Maintain fire hydrant with current flushing and 2 2 1 3 1 1 1 1 1 1 1 15 H testing programs in place. Worthington - 8 Accommodate citizens at the Community Center 3 0 2 2 1 1 1 1 1 1 1 14 H in the event of extreme heat. Worthington - 9 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. Worthington -10 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. orthington -11 Create and maintain call down list of all critical 1 0 1 3 1 1 1 1 1 1 1 12 M personnel. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 294 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)0. J W W 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Worthington- Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M 12 prevent loss in the event of hazard. Worthington - Buy out, acquire, and demolish damaged, 13 vulnerable or endangered structures 2 3 3 3 1 1 1 1 1 1 1 18 H Worthington — 14 Upgrade cyber security devices/firewalls 0 3 1 3 1 1 1 1 1 1 0 13 H Worthington - 15 Increase and level land behind fire station and city 1 3 1 2 1 1 1 1 1 1 1 14 H hall wingle - 1 Provide backup power generators and wiring for 1 1 1 1 1 0 1 1 1 -1 1 8 M critical facilities. Purchase or elevate structures, add lift stations, 0 2 2 3 1 0 -1 0 0 0 0 7 L wingle - 2 increase/reinforce culvert size, and add curb and gutter to streets in areas in flood zones with severe and repetitive flood damage to prevent reoccurrence. Continue to maintain existing outdoor warning 3 1 3 3 1 0 1 1 1 -1 1 14 H wingle - 3 siren systems and ensure appropriate coverage for population. wingle - 4 Obtain NOAA weather radios for every home in 2 1 2 3 1 0 0 0 0 -1 1 9 M Dubuque County. wingle - 5 Train personnel as weather spotters. 1 2 1 2 1 1 1 1 1 0 1 12 M Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H wingle - 6 hazardous weather through newsletters, public notices, strolling signs, etc. wingle - 7 Purchase backup generators and install hookups 2 1 1 2 1 1 1 1 1 1 0 12 M to provide electricity in the event of a power outage. wingle - 8 Continue to add needed infrastructure to mitigate 2 3 2 3 1 1 1 1 1 1 1 17 H flood damage. wingle - 9 Continue to employ Good Neighbor policy and 3 1 2 3 1 1 1 1 1 1 0 15 H Shelter in Place policy until better options are available. wingle - 10 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. wingle - 11 Maintain or consider NFIP membership as 0 1 1 2 1 1 1 1 1 1 1 11 M required. wingle - 12 Maintain procedure to backup all critical data to 0 0 1 3 1 1 1 1 1 1 1 11 M prevent loss in the event of hazard. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 295 2024 Action Action Summary Lives Reduced Reduced Will Score Priority ID Saved? Property need for Benefits° Damage? response Exceed actions? Cost? @ C> y -S V O O L O L G1 E V ... O N c 0 C 0)a _j w w 0-unlikely, 1-maybe, 2-probably, or 3-definitely Positive (1) Neutral (0) Negative (-1) Dubuque Public Develop policy to prevent construction in the 1 3 1 1 1 1 1 1 1 0 1 12 M School District floodplain of education buildings or supporting 1 structures (such as bus barns or maintenance sheds). Dubuque Public Develop policy to better secure against cyber 0 1 2 3 1 1 1 1 1 1 1 13 H School District security breech. 2 Dubuque Public Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H School District - 3 hazardous weather through newsletters, public notices, strolling signs, etc. NICC - 1 Consider building a tornado safe room for all new 3 1 1 3 1 0 0 0 0 -1 1 9 M construction. NICC - 2 Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H hazardous weather through newsletters, public notices, strolling signs, etc. Western Develop policy to prevent construction in the 2 3 2 3 1 1 1 1 1 1 1 17 H Dubuque Public floodplain of education buildings or supporting School structures (such as bus barns or maintenance District - 1 sheds). Western Dubuque Continue to improve public awareness of 1 1 1 3 1 1 1 1 1 1 1 13 H Public School hazardous weather through newsletters, public District - 2 notices, strolling signs, etc. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 296 CO U N.V.P -Z * 4 °Vaud`` 5 PLAN MAINTENANCE PROCESS This chapter provides an overview of the overall strategy for plan maintenance and outlines the method and schedule for monitoring, updating, and evaluating the plan. The chapter also discusses incorporating the plan into existing planning mechanisms and how to address continued public involvement. 5.1 Monitoring, Evaluating, and Updating the Plan 44 CFR Requirement 201.6(c)(4): The plan maintenance process shall include a section describing the method and schedule of monitoring, evaluating, and updating the mitigation plan within a five-year cycle. 5.1.1 Hazard Mitigation Planning Committee (HMPC) With adoption of this plan, the HMPC will be tasked with plan monitoring, evaluation, and maintenance. The participating jurisdictions and agencies, led by the Dubuque County Emergency Management Coordinator, agree to: • Meet annually to review the Hazard Mitigation Plan; • Act as a forum for hazard mitigation issues; • Disseminate hazard mitigation ideas and activities to all participants; • Pursue the implementation of high priority, low- or no -cost recommended actions; • Maintain vigilant monitoring of multi -objective, cost -share, and other funding opportunities to help the community implement the plan's recommended actions for which no current funding exists; • Monitor and assist in implementation and update of this plan; • Keep the concept of mitigation in the forefront of community decision making by identifying plan recommendations when other community goals, plans, and activities overlap, influence, or directly affect increased community vulnerability to disasters; • Report on plan progress and recommended changes to the Dubuque County Board of Supervisors and governing bodies of participating jurisdictions; and • Inform and solicit input from the public. The HMPC is an advisory body and can only make recommendations to county, city, town, or district elected officials. Its primary duty is to see the plan successfully carried out and to report to the community governing boards and the public on the status of plan implementation and mitigation opportunities. Other duties include reviewing and promoting mitigation proposals, hearing stakeholder concerns about hazard mitigation, passing concerns on to appropriate entities, and posting relevant information in areas accessible to the public. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 297 5.1.2 Plan Maintenance Schedule The HMPC agrees to meet annually to monitor progress, discuss recent hazard events, changes in development that impact vulnerability, and update the mitigation strategy. The Dubuque County Emergency Management Coordinator will be responsible for initiating the plan reviews which will be integrated into the regularly scheduled Emergency Management Commission meetings. In coordination with the other participating jurisdictions, a five-year written update of the plan will be submitted to the Iowa Homeland Security and Emergency Management Department and FEMA Region VII per Requirement §201.6(c)(4)(i) of the Disaster Mitigation Act of 2000, unless disaster or other circumstances (e.g., changing regulations) require a change to this schedule. 5.1.3 Plan Maintenance Process Evaluation of progress can be achieved by monitoring changes in vulnerabilities identified in the plan. Changes in vulnerability can be identified by noting: • Decreased vulnerability because of implementing recommended actions, • Increased vulnerability because of failed or ineffective mitigation actions, and/or • Increased vulnerability because of new development (and/or annexation). The annual reviews and updates to this plan will: • Consider changes in vulnerability due to action implementation, • Document success stories where mitigation efforts have proven effective, • Document areas where mitigation actions were not effective, • Document any new hazards that may arise or were previously overlooked, • Incorporate new data or studies on hazards and risks, • Incorporate new capabilities or changes in capabilities, • Incorporate growth and development -related changes to inventories, and • Incorporate new action recommendations or changes in action prioritization. To best evaluate the mitigation strategy during plan review and update, the participating jurisdictions will follow the following process: A representative from the responsible office identified in each mitigation action will be responsible for tracking and reporting the action status on an annual basis to the jurisdictional HMPC member and providing input on any completion details or whether the action still meets the defined objectives and is likely to be successful in reducing vulnerabilities. • If the action does not meet identified objectives, the jurisdictional HMPC member will determine what additional measures may be implemented, and an assigned individual will be responsible for defining action scope, implementing the action, monitoring success of the action, and making any required modifications to the plan. • As part of the annual review process, the Dubuque County Emergency Management Coordinator will provide the updated Mitigation Strategy with status of each mitigation action to the County Board of Supervisors and County Department Heads as well as all Mayors, City Clerks, and School District Superintendents requesting that the mitigation strategy be incorporated, where appropriate in other planning mechanisms. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 298 Changes will be made to the plan to accommodate for actions that have failed or are not considered feasible after a review of their consistency with established criteria, time frame, community priorities, and/or funding resources. Actions that were not ranked high but were identified as potential mitigation activities will be reviewed as well during the monitoring and update of this plan to determine feasibility of future implementation. Updating of the plan will be by written changes and submissions, as the Dubuque County HMPC deems appropriate and necessary, and as approved by the Dubuque County Board of Supervisors and the governing boards of the other participating jurisdictions. 5.2 Incorporation into Existing Planning Mechanisms 44 CFR Requirement §201.6(c)(4)(ii): [The plan shall include a] process by which local governments incorporate the requirements of the mitigation plan into other planning mechanisms such as comprehensive or capital improvement plans, when appropriate. Many of the small jurisdictions in Dubuque County do not have standing formal planning mechanisms such as a Comprehensive Plan or Capital Improvements Plan through which formal integration of mitigation actions can be documented. As a result, activities that occur in these small communities are developed through, annual budget planning, regular City Council Meetings, and other community forums rather than a formal planning process. Planning mechanisms in the participating jurisdictions include: • Comprehensive Plans —Cities of Asbury, Bernard, Dyersville, Epworth, Farley, Rickardsville, Zwingle • Various ordinances of participating jurisdictions, including floodplain management ordinances in NFIP-participating communities; • Dubuque County Emergency Operations Plan; • Capital Improvement Plans —Cities of Bernard, Dyersville, Farley, Zwingle, as well as the community college and public -school districts For a detailed summary of planning mechanisms and other mitigation -related capabilities, see Table 2.8 in Chapter 2. Incorporation of Previous Hazard Mitigation Plan into Existing Planning Mechanisms Instances of incorporation of the plan into previous planning mechanisms varied across jurisdictions. A review of the completed actions and other identified and/or completed mitigation initiatives demonstrates that mitigation has been accomplished through existing planning mechanisms. Incorporation of Updated Hazard Mitigation Plan into existing Planning Mechanisms Going Forward Where possible, plan participants will use existing plans and/or programs to implement hazard mitigation actions. After the annual review of the Hazard Mitigation Plan, the Dubuque County Emergency Management Coordinator will provide the updated Mitigation Strategy with the status of each mitigation action to the County Commission and County Department Heads as well as all Mayors, City Clerks, and School District Superintendents requesting that the mitigation strategy be incorporated, where appropriate in other planning mechanisms. Jurisdiction -specific implementations may include: Incorporation into annual emergency management training, planning, and purchasing plans Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 299 2. Coordination of mitigation strategy with County's Emergency Management Grant Fund, as well as seeking additional funding opportunities 3. Integration of risk assessment into future updates of the Comprehensive Emergency Operations Plan 4. Integration of mitigation strategy into county and community comprehensive plans 5. Integration of mitigation strategy into county and community capital improvement plans 6. Integration of mitigation strategy into annual budget planning processes 5.3 Continued Public Involvement 44 CFR Requirement §201.6(c)(4)(iii): [The plan maintenance process shall include a] discussion on how the community will continue public participation in the plan maintenance process. The update process provides an opportunity to publicize success stories from the plan's implementation and seek additional public comment. The public will be involved in the plan maintenance process by publication of a Press Release after each annual review indicating the committee has met with a summary of mitigation action status updates and highlights of specific completed mitigation actions, as applicable. When the HMPC reconvenes for the update, it will coordinate with all stakeholders participating in the planning process, including those who joined the HMPC after the initial effort, to update and revise the plan. Public notice will be posted through available website postings and social media outlets. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 300 Appendices APPENDIX A: REFERENCES • American Meteorological Society, Freezing Rain Events in the United States • City of Dubuque 2037 Comprehensive Plan, September 2017 • Dubuque County Conservation Board Master Plan • Dubuque County Assessor's Office (Parcel Data in GIS Format) • Dubuque County, Iowa Multi -Jurisdictional Hazard Mitigation Plan, 2019 • Climate Change Impacts on Iowa, January 1, 2011 • Climate Change Research Program. Cambridge University Press • DeWitt 2030: Envisioning Opportunity, City of DeWitt Comprehensive Plan, May 2016 • Data.gov, FEMA HMA Grants in Dubuque County • Environmental Protection Agency, Surf Your Watershed • Federal Emergency Management Agency, BCA Reference Guide • Federal Emergency Management Agency, Dubuque County DFIRM and Preliminary DFIRM • Federal Emergency Management Agency, Dubuque County Flood Insurance Study • Federal Emergency Management Agency, Community Status Book • Federal Emergency Management Agency, Presidential Disaster Declarations • Federal Emergency Management Agency, Taking Shelter from the Storm, 3rd Edition • Flood Insurance Administration, Policy, and Loss Statistics • Hazards US MH-2.2 (HAZUS) • Hazards Vulnerability Research Institute, Social Vulnerability Index • High Plains Regional Climate Center • Iowa Department of Agriculture • Iowa Department of Agriculture and Land Stewardship, Division of Soil Conservation • Iowa Department of Education, Bureau of Planning, Research and Evaluation • Iowa Department of Health Center for Acute Disease Epidemiology • Iowa Department of Natural Resources, Animal Feeding Operations • Iowa Department of Natural Resources, Dam Safety Program • Iowa Department of Natural Resources, EPCRA Spill Reporting, http://www.iowadnr.gov/lnsideDNR/RegulatoryLand/EmergencyPlanningEPCRA/SpilIReporting. aspx • Iowa Department of Natural Resources, NRGIS Library • Iowa Department of Transportation's Office of Traffic and Safety • Iowa Environmental Mesonet, climate data • Iowa Hospital Association http://www.iowahospitalcharges.com/wa Hospital Association, • Iowa State Hazard Mitigation Plan, 2013 • Iowa State University Department of Economics • Iowa State University, Department of Agronomy, Environmental Mesonet • Iowa State University, Extension Office, Distribution of Ash Trees in Iowa • Iowa Utilities board, Electrical Service Area Reference Map • Johns Hopkins University Electronic Mass Casualty Assessment and Planning Scenarios (EMCAPS) http://www.hopkins-cepar.org/EMCAPS/EMCAPS.htmI • Karl, T.R., J.M. Melillo, and T.C. Peterson (eds). 2009. Global Climate Change Impacts in the United States. U.S. Global • National Climatic Data Center • National Drought Mitigation Center, U.S. Drought Monitor & Drought Impact Reporter Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 301 • National Oceanic and Atmospheric Administration, National Climatic Data Center • National Oceanic and Atmospheric Administration, Storm Prediction Center • National Severe Storms Laboratory • National Weather Service • Pipeline and Hazardous Materials Safety Administration, National Pipeline Mapping System, https://www.npms.phmsa.dot.go/PublicViewer/ • SILVIS Lab, Department of Forest Ecology and Management, University of Wisconsin • State Historical Society of Iowa, National Register of Historic Places Listings • Tornado and Storm Research Organization (TORRO), Department of Geography, Oxford Brooks University • U.S Census Bureau, Decennial Census, 2010 and 2020 • U.S. Army Corps of Engineers, Cold Regions Research and Engineering Laboratory • U.S. Census Bureau, Building Permit Data • U.S. Census Bureau, On the Map Tool • U.S. Department of Agriculture Cropland Data Layer (CropScape) • U.S. Department of Agriculture, Emerald Ash Borer County Detection Map • U.S. Department of Agriculture, Risk Management Agency Crop Insurance Statistics • U.S. Department of Agriculture, Secretarial Disaster Declarations • U.S. Department of Agriculture National Agricultural Statistics Service, 2017 Census of Agriculture • U.S. Fish and Wildlife Service, Threatened and Endangered Species • U.S. Geological Survey APPENDIX B: PLANNING PROCESS The following materials are provided to document the planning process: 8.1 Dubuque County Hazard Mitigation Planning Committee (HMPQ Members ................................................... 8.2 Kick-off Meeting Invite...................................................................................................................................... 8.3 Kick -Off Meeting Agenda.................................................................................................................................. 8.4 Kickoff Meeting Minutes................................................................................................................................... 8.5 Meeting #2 Agenda........................................................................................................................................... 8.6 Meeting #2 Minutes.......................................................................................................................................... 8.7 Meeting #2 Sign -In Sheets................................................................................................................................. 8.8 Meeting #3 Agenda........................................................................................................................................... 8.9 Meeting #3 Minutes.......................................................................................................................................... 8.10 Meeting #3 Sign -In Sheets............................................................................................................................... 8.11 Public Notice During Drafting Stage................................................................................................................ 8.12 Public Outreach Social Media Posts................................................................................................................. 8.13 Plan Summary/Questionnaire for Public Comment during Drafting Stage ...................................................... 8.14 Announcement for Final Public Comment Period............................................................................................ Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 302 B.1 Dubuque County Hazard Mitigation Planning Committee (HMPC) Members Jurisdictional and Stakeholder Representatives that Attended Meetings Name Title Jurisdiction I Stakeholder Bonz, Beth City Administrator City of Asbury Henneberry, Tom Police Chief City of bury Telford, Blaine Public Works Director Cit of ury Mauer, Loras City Clerk City of Balltown Sigwarth, Sherri Mayor City of Balltown Mausser, Betty City Clerk City of Bankston Stoffel, Rick Mayor City of Bankston Hingtgen, Bob Citizen City of Bernard Stoll, Kaitlyn City Clerk City of Bernard Hartke, Danielle City Clerk City of Cascade Kotter, Lisa City Manager City of Cascade Hostert, Matt City Clerk City of Centralia Burbach, Cori Assistant City Manager City of Dubuque Corrigan, Mary Rose Director of Public Health City of Dubuque Muehring, Deron Water & Resource Discovery Center Director City of Dubuque Murphy, Mark Emergency Preparedness/Public Health City of Dubuque Patzner, Troy City Assessor City of Dubuque Wemimont, Wally Planning Services Director City of Dubuque Datisman, Marge City Clerk City of Durango Michel, Mick City Administrator City of Dyersville Berger, Janet City Clerk City of Epworth Ludwig, Kelly Director of Finance & Development City of Farley Chipperfieid, Kurt City Clerk City of Graf Maiers, Brian Mayor City of Holy Cross Vonderharr, Amy City Clerk City of Holy Cross Oberbroeckling, RogeF Mayor City of Luxemburg Knapp, Mary Ann City Clerk City of Rickardsville Schmitt, Kevin Mayor City of Sageville Smock, Larry Mayor City of Worthington Smock, Teri City ClerklTreasurer City of Worthington Brown, Helen Mayor City of Zwingle Powers, Rob Manager of Building & Grounds Dubuque Community School District Berger, Tom EMA Director Dubuque County McDonough, Ann Supervisor Dubuque County Raber, Ed Planning & Development Director Dubuque County Selby, Billie Assessor Dubuque County Weber, Russell County Engineer Dubuque County Bahl, Craig Executive Director of Facilities and Operations N1CC Hingtgen, Bob Building & Grounds Director Western Dubuque Community School District Jennifer Walker From: Sent: To: Cc: Subject: Hello Dubuque County Officials: Jennifer Walker Wednesday, July 19, 2023 4:19 PM ctymgr@cityofdubuque.org; Megan Brehm; Thomas Stecher; Tricia Maiers; Angie Oberbroeckling; Angie Oberbroeckling; cityofrickardsville@gmail.com; Worthingtonlowa@outlook.com; Karla Mahoney, mmichel@cityofdyersville.com; Janet Berger, cityofballtown@gmail.com; Betty Mausser; ebonz@cityofasbury.com; holycrosscity@gmail.com; admin@citycascade.com; ctymgr@cityofdubuque.org; Megan Brehm; Thomas Stecher; Tricia Maiers; Angie Oberbroeckling; Angie Oberbroeckling; eityofrickardsville@gmail.com; Worth ingtonIowa @outlook_eom; Karla Mahoney, mmichel@cityofdyersville.com; Janet Berger; cityofballtown@gmail.com; Betty Mausser, ebonz@cityofasbury.com; holycrosscity@gmail.com; admin@citycascade.com; Cori Burbach; ahawkins@dbgschools.org; Itebockhorst@dbgschools.org; mburns@dbgschools.org; bduvel@dbgschools.org Tom Berger, Jennifer Walker; Dawn Danielson; Ann McDonough; Harley Pothoff; wayne. ken nicker@dubuquecountyiowa.gov; Ed Raber; anthony.bardgett@dubuquecounty.us Dubuque County Hazard Mitigation Plan Update - NEEDED It is that time again when Dubuque County is required to update its 5-year Hazard Mitigation Plan (HMP). The County has contracted with ECIA to update the plan and the first step in the process it to rank the hazards in the County. The link below will take you to a brief survey that will help us reach more people and save time. It should take about 5 —10 minutes to fill out, but please read the directions carefully and answer all questions, or you won't be able to submit. For city clerks and administrators on this list, please forward this email to your fire chiefs, physical plant managers, and anyone else you think would have valuable input on updating the countywide HMP. Please note: Dubuque County is required to have respondents from each participating jurisdiction and the school districts, so please fill out the survey. We need all surveys returned by July 28, 2023 so we can begin to calculate and assemble the weighted responses. There will be an in person meeting on Wednesday, August 30 2023 from 2 — 4:30 m . We will meet at the Dubuque County Emergency Management offices at 14928 Public Safety Way, Dubuque, IA 52002 in person only to complete the GOAL SETTING portion of the plan update. Look for a meeting invite soon. Here's the link to the survey. https://www.surveymonkpy.comlr/LF8P5JM Please let me know if you have any questions. Otherwise, I look forward to receiving your replies. Thank you, Jennifer Walker Director of Special Programs ECIAICSEI 7600 Commerce Parkr Dubuque, IA 52002 563.556.4166 'walkrer@ecia.or www.ecia.org mmunity zmlutions of Eastern Iowa Addressing homelessness & Foaeing mn tabillry B.2 Kick-off Meeting Invite & Agenda Dubuque County Hazard Mitigation Planning Meeting #1 Zoom Meeting Only Wednesday, July 19, 2023 Agenda I. Introductions II. Hazard Mitigation Planning Purpose III. Grant Programs Linked to an Approved Plan IV. Multi -Jurisdictional Approach V. Planning/Participation Requirements VI. Public Involvement VII. Survey Monkey link to ranking of Hazards Vlll. Wrap up and discuss deadlines and assignments IX. Next Steps X. Adjourn B.3 Minutes for July 19, 2023 Kick-off Meetin To: Dubuque County Hazard Mitigation Planning Committee From: Jennifer Walker, Director of Special Programs, ECIA Date: July 21, 2023 Subject: Minutes from Dubuque County HMPC Planning Kick-off Meeting introduction: The meeting began with a welcome and thank you to all attendees for participating in the Zoom meeting. Hazard Mitigation Planning Purpose: Jennifer Walker from ECIA presented information on the purpose of Hazard Mitigation Planning and the Disaster Mitigation Act of 2000. The attendees were reminded this is an update of the Dubuque County Hazard Mitigation Plan of 2019. A summary of Presidential Disaster Declarations was presented. Grant Programs Linked to Approved Plan: Walker briefly discussed the FEMA Hazard Mitigation Assistance grants that require participation in an approved Hazard Mitigation Plan for jurisdictions to be eligible to apply. These include: Hazard Mitigation Grant Program, Building Resilient infrastructure and Communities (BRIG), Pre -Disaster Mitigation Program, and Flood Mitigation Assistance Program. Multi -Jurisdictional Approach: overview of the 9 Planning Tasks that will be followed during the planning process was given and Ms. Walker addressed the benefits for jurisdictions participating in this mitigation plan update including improved coordination and communication among local jurisdictions. Impacts of hazards do not stop at jurisdictional boundaries. This multi - jurisdictional approach allows for a more comprehensive risk assessment and resulting mitigation strategy for the entire planning area. Planning/Participation Requirements: Walker also described the role of the HMPC. Each jurisdiction participating is expected to attend at least one of the two planning meetings, complete the survey to rank hazards, review jurisdictional capabilities, review and revise mitigation goals and activities, provide data, provide comments on plan drafts as requested, and formally adopt the mitigation plan. Jurisdictions that choose not to participate in development of a FEMA-approved mitigation plan will not be eligible applicants for FEMA Hazard Mitigation Assistance Grants. Public Involvement: The local hazard mitigation plan requirements state that the public needs to have the opportunity to comment on the plan. The public will be given the opportunity to comment on the full draft of the plan. Risk Assessment Survey: A survey will be released today via email to all participating jurisdictions and to the public to provide information about hazards in each jurisdiction and the county. The survey was also available in hard copy from ECIA or from Dubuque County Emergency Management. The survey will remain open until July 28, 2023. Next Steps: Attendees were asked to complete the survey and fill out their Data Collection information by July 28, 2023. They were also invited to an in -person meeting on Wednesday, August 30, 2023 at the Dubuque County Emergency Management offices at 14928 Public Safety Way, Dubuque, IA 52002 to complete the goal setting portion of the plan update. BA Meeting #2 Invite & Agenda Invitation via email dated July 19 2023 Jennifer Walker From: Jennifer Walker Sent: Thursday, August 24, 2023 8:39 AM To: Beth Bonz; aernst@cityofpeosta.org; admin@citycascade.com; Kelly Ludwig; mmichel@cityofdyersville.com; ctymgr@cityofdubuque.org; Cori Burbach Cc: Jennifer Walker Subject: RESPONSE NEEDED: Dubuque County Hazard Mitigation Plan Update Importance: High Hello Dubuque County City Managers & Administrators: I apologize for multiple emails, but I am now sending links to 4 Google Sheets that will need to be updated by each of your communities for the Hazard Mitigation Plan update. I will review these briefly at the August 30th planning meeting, but I thought I'd give you a jump start on getting them completed. Please update your community's section no later than September $t". This deadline is very important, as we need to post the draft for public feedback and submit to the State of Iowa by the middle of September to meet FEMA renewal deadlines. If you need help filling out the documents please contact me at 563-581-2852. NOTE: Only 1 sheet of each table per jurisdiction needs to be submitted. Table 2.7: Mitigation Capabilities by Jurisdiction: Mitigation Capabilities Table 2.9: Additional Mitigation Capabilities by Jurisdiction: Additional Mitigation Capabilities Table 3.4: Future Land Use & Development: Future Land Use & Develo ment Table 3.10. Inventory of Critical Essential Facilities: Inventory of Critical Facilities I've heard from Beth, Cori, and Mick that you'll be at the meeting on August 30 from 2 — 4:30pm at ECIA. Thank you! Annette and Kelly if you could let me know who will be in attendance from Peosta and Farley, I would appreciate it. Thanks for your assistance! Jennifer Walber Director of Special Programs ECIA/CSEI 7600 Commerce Park Dubuque, IA 52002 563.556.4166 'waWer@ecia.or Www.e 2- r9 Dubuque County Hazard Mitigation Planning Meeting #2 NOTE LOCATION CHANGE: ECIA Offices — 7600 Commerce Park — Dubuque, IA 52002 Wednesday, August 30, 2023 — 2:00 — 4:30pm Agenda Introductions (2:00 — 2:15pm) Review Risk Assessment Survey results and confirm (2:15 — 2:45pm) II1. Review information that will be available via Google Sheets that requires jurisdictions to update. (2:45 — 3:OOpm) IV. Review and update status of Mitigation Actions listed in current (2019) HMP Update. Worksheets will be provided at meeting. (3:00 — 3:30pm) V. Discuss and add any new goals (3:30 — 4:15pm) VI. Wrap up and discuss deadlines and assignments (4:15 — 4:30pm) VII. Adjourn (4:30pm) m a) n rD r+ a, 3 r+ ffo 0 c rD rD r+ n 0 n v' c: 0 m n n Y V O O 0 3 3 ro n rD w v .a rD n Ln N 0 0 N rD ra cm N 0 .a of as 0 n rD I n aq O CA rig W CD N O N W I N I w 0 v Cr c c rD n 0 r« Qj N au fz aq 0 OJ C CL w r+ rD 13.3 Minutes for Auqust 30. 2023 Meetina #2 To: Dubuque County Hazard Mitigation Planning Committee From: Jennifer Walker, Director of Special Programs, ECIA Date: July 21, 2023 Subject: Minutes from Dubuque County HMPC Planning Kick-off Meeting Introduction: Tom Berger with Dubuque County Emergency Management and Jennifer Walker with ECIA began the meeting began with a welcome and thank you to all attendees for participating in the meeting. Review Risk Assessment Survey results and confirm: Walker reviewed the survey results that ranked hazards by jurisdiction. She noted that overall, ranking numbers were lower than the previous plan and that the highest-ranking hazards had shifted slightly. One participant asked about whether infrastructure included IT hacking. The group discussed and decided to included individual action items if needed, but that it was not typically included as a specific goal in HMPs. Review information that will be available via Google Sheets that requires jurisdictions to update: Walker showed the attendees four Google sheets that had been created to review data from the previous plan and how to update the information for this plan. Hard copies were also made available to each jurisdiction. Review and update status of Mitigation Actions listed in current (2019) HMP Update: Worksheets will be provided at meeting. These were part of the four Google Sheets and the hard copy. Groups comprised of participants from the same jurisdiction sat together and reviewed and updated information in the time permitted. Discuss and add any new goals: Worksheets will be provided at meeting. These were part of the four Google Sheets and the hard copy. Groups comprised of participants from the same jurisdiction sat together and reviewed and updated information in the time permitted. Wrap up and discuss deadlines and assignments: Participants who needed additional input from other members of their jurisdiction agreed to take the information back to them and collect required data and submit to Walker. Those who were new to the process worked with Walker and Berger to guide their responses and prepare them to share information with their cohorts. Adjourn: Walker explained that additional information gathering would be done by phone or at one-on-one visits with the appropriate parties. Following that, a complete draft would be prepared and shared with all HMPC members and cohorts from participating and neighboring jurisdictions. The meeting was then adjourned. Jennifer Walker From: Tom Berger <Tom.Berger@DBOCOEMA.COM> Sent: Tuesday, October 31, 2023 9:36 AM To: Lyn Medinger; brenda.leonard@jonescountyiowa.gov; Mandy Bieber -Delaware; 'Sarah Moser'; Steve Braun (sbraun@co.grant.wi.gov); msimmons@jodaviesscountyil.gov Cc: Jennifer Walker, Tom Berger Subject: [EXTERNAL] FW: DRAFT & Model Resolution - Dubuque County Hazard Mitigation Plan Good Morning Neighbors — We are currently working with ECIA to update our Dubuque County MJHMP. As a requirement to share the draft plan with our neighboring jurisdictions, the link to the plan is attached if you would care to look at it and provide any feedback. Hope all is well. Have a great week! The link to the plan is at the bottom. TMOMAS /. BERGER, EMU Coordinator Dubuque County Emergency Management Agency 14928 Public Safety Way Dubuque, IA 52002-8216 Phone: 563-589-4170 Fax: 563-589-0015 tom.berger@dbecoema.com From: Jennifer Walker <jwalker@ecia.org> Sent: Friday, October 27, 2023 3:52 PM Cc: Jennifer Walker <jwalker@ecia.org> Subject: DRAFT & Model Resolution - Dubuque County Hazard Mitigation Plan Hello City Administrators, Managers, Clerks and other officials from Dubuque County and Jurisdictions: Please find below my signature file, the link to the draft of the Dubuque County Hazard Mitigation Plan. We still have few tables to update in Chapter 3, but I wanted to keep this project moving to hit our target deadline of having a new, FEMA-approved plan in place by mid -February 2024. Keeping in mind that FEMA requires jurisdictions to identify mitigation actions in the approved plan before being eligible for FEMA hazard mitigation grant (HMGP) funds or Building Resilient Infrastructure & Communities (BRIC) grants, please look carefully at Chapter 4 to ensure that we've properly recorded your community's mitigation actions. If you have any additions deletions or edits notify me via email no later than midnight on SundaV, November 26 2023, After that, we will revise the draft and send on to Iowa Department of Homeland Security & Emergency Management (HSEMD) for their approval. This plan will be active from February 2024— February 2029. Thank you to all who filled out surveys, came to meetings, answered questions, and helped me track down data. We're almost there! Rega rds, Jennifer Walker Director of Special Programs ECIA/CSEI 7600 Commerce Park Dubuque, Iowa 52002 563-690-5709 direct. 563-556-4166 main www.ecia.org www.cseiowa.org • PLACES TO WORK The draft is available here: htt s: drive.goog)e.com/drive/folders/lwzquEEaefwKrlHXb-6-k xSLugCv-d-CF?usa=sharing. Thanks, Dylan Michels, Technology and Program Support Specialist East Central Intergovernmental Association (ECIA) 7600 Commerce Park I Dubuque, IA 52002 (563) 690-5751 www.ecia.org Connect with us on Facebook: htt s: www.facebook.com/eastcentralintergovernmentaIassociation/ Jennifer Walker From: Jennifer Walker Sent: Friday, October 27, 2023 3:52 PM To: clerk@citycascade.com; nvmayorl @gmail.com, kdschmitt@mchsi.com; sagevillemayor@gmail.com; mayor@cityofpeosta.org- ctymgr@cityofdubuque.org; Megan Brehm; matthew.hostert@gmail.com; Tricia Maiers; Angie Oberbroeckling; Angie Oberbroeckling; cityofrickardsville@gmail.com; Worthington Iowa@outlook.com; Karla Mahoney; Jim Adams; s.sigwarth@yousq.net; 'Rick Stoffel'; Megan Brehm; mmichel@c4ofdyersville.com; bmaiers@gosafeguard.com; Janet Berger, cityofballtown@gmail.com; Betty Mausser; ebonz@cityofasbury.com; holycrosscity@gmail.com; admin@citycascade.com, jjacque@cityofdyersville.com; Sandra Gassman; jay.hefel@wdbgschools.org; rickardsvillemayor@gmail.com; rogeroberbroeckling@ymail.com; graf.iowa@gmail.com; Ijsmock@windstream.net; melissaschmitt@hotmail.com; graf.iowa@gmail.com; citysherrill@gmail.com; djberinger@aol.com; Doug Hummel; Sara Burke; cleric@citycascade.com; mega nscmitt@icloud.com; aernst@cityofpeosta.org, kelly.ludwig@farleyiowa.com; abreitfe@cityofdubuque.org; cityofsageville@gmaii.com; jessi@epworthiowa.org; cityclerk@farleyiowa.com; deputyclerk@cityofpeosta.org; worthingtoncsmock@outlook.com; Cori Burbach; Deron Muehring; Tom Berger; 'Ed Raber; Ann McDonough; Harley Pothoff; wayne.kennicker@dubuquecountyiowa.gov; bobNngtgen@wdbgschools.org; Powers, Robert; matthew.hostert@gmail.com; Mark Murphy; Russell Weber, Mary Ann Knapp; Craig Bahl; Wally Wernimont Cc: Jennifer Walker Subject: DRAFT & Model Resolution - Dubuque County Hazard Mitigation Plan Attachments: Model Resolution.docx Hello City Administrators, Managers, Clerks and other officials from Dubuque County and Jurisdictions: Please find below my signature file, the link to the draft of the Dubuque County Hazard Mitigation Plan. We still have a few tables to update in Chapter 3, but I wanted to keep this project moving to hit our target deadline of having a new, FEMA-approved plan in place by mid -February 2024. Keeping in mind that FEMA requires jurisdictions to identify mitigation actions in the approved plan before being eligible for FEMA hazard mitigation grant (HMGP) funds or Building Resilient Infrastructure & Communities (BRIO) grants, please look carefully at Chapter 4 to ensure that we've properly recorded your community's mitigation actions. If you have any additions deletions or edits notify me via email no later than midnight on Sunday, November 26 2023. After that, we will revise the draft and send on to Iowa Department of Homeland Security & Emergency Management (HSEMD) for their approval. Attached is a model resolution. If this draft meets with your approval, please modify this for approval by your jurisdiction (county, each city, and each school district) at your earliest possible meeting, put on the agenda for approval and adoption of the 2024 Dubuque County Multi -Jurisdictional Hazard Mitigation Plan Update. If you could send me the date that this will be on our governing body's agenda, I would appreciate it. We will need signed resolutions from all participating jurisdictions. This plan will be active from February 2024 — February 2029. Thank you to all who filled out surveys, came to meetings, answered questions, and helped me track down data. We're almost there! Regards, Jennifer Walker Director of Special Programs ECIA/CSEI 7600 Commerce Park Dubuque, Iowa 52002 563-690-57o9 direct 563-556-4166 main www.ecia.org www.cseiowa.org • • F3iLACES TO WORK The draft is available here: https://drive,google.com/drive/folders/lwzauEE©efwKrlHXb-6k x8t.ugCy-d-CF?usp=sharing. Thanks, Dylan Michels, Technology and Program Support Specialist East Central Intergovernmental Association (ECIA) 7600 Commerce Park I Dubuque, IA 52002 (563) 690-5751 www.ecia.cI Connect with us on Facebook: https://www.facebook.com/eastcentraIintergovernmentalassociation/ County officials e e preparation a ainst storms natural disasters Efforts to protect against severe weather and flooding are among those prioritized by Dubuque County in a Hazard Mitigation Plan being updated to help communities secure funding to undertake such projects. County officials recently released a draft of their 2024 plan, which when finalized qualifies projects meant to protect against natural disasters and other hazards for federal funding. The plan allows Dubuque County Emergency Management and local governments in the county to access Hazard Mitigation Program funding from the Federal Emergency Management Agency before disaster strikes, rather than requesting funds for relief afterward. In updating the plan, county leaders highlighted ways to protect against hazards specific to the area — from tornadoes and river flooding to drought and transmissible animal diseases. "For any kind of mitigation grant — anything to do with Bee Branch or any project that would lessen the effects of a disaster — the communities have to have the projects listed in the plan to apply for the grants," said Jennifer county Emergency Management Director Tom Berger. In developing the plan, officials from the county, walie" city governments and school districts ranked the hazards that most concerned them and the projects they thought would best address those concerns. Of identified hazards in the area, local leaders gave the highest priority to planning against severe winter weather and thunderstorms — including tornadoes. One high -profile project highlighted is moving the Dubuque County 911 communications center from its site at Dubuque Law Enforcement Center to a more centrally located place in the county and into a building that could withstand a tornado or derecho. That project has been approved by the Dubuque County Board of Supervisors, though funding still is being planned. Several cities also seek to improve severe weather communications via new sirens, placing National Oceanic and Atmospheric Administration radios in homes and requiring tornado safe rooms in new construction. But officials from most cities said they had no local funding or community support for the projects. Concerns about precipitation -related hazards such as flash floods, river flooding, damilevee failures and drought were less widespread but prioritized highly in communities susceptible to them, such as Dubuque, Cascade, and cities along the Little Maquoketa River. The plan notes that much of downtown Dubuque relies on major river infrastructure such as its Mississippi River floodwall and Lock and Dam No. 11, as well as internal stormwater controls. While local and federal partners have succeeded in flood prevention efforts with Dubuque's Bee Branch Creek Restoration project, city officials included in the plan a needed pump station and gate replacement at the 16th Street detention basin, along with finishing several stormwater sewer connections to the greater Bee Branch system. The city earlier this year secured a $7.7 million federal grant toward the nearly $30 million project at the 16th Street detention basin. The plan also notes that Cascade has a levee in need of maintenance or upgrades, and Dyersville and several Other cities listed further acquisition of residences or failing farmland in floodplains to reduce repeated flood damage. Annual disaster declarations for the area have grown more frequent in recent years, according to the plan. Of the 21 FEMA declarations impacting the area since 1965, when the federal program began, one-third have occurred since 2010 and four have happened since 2020. The U.S. Department of Agriculture also has declared three disasters that included Dubuque County in the past five years — excessive moisture, flooding, and flash flooding in 2018; the derecho of 2020; and drought in 2021. The plan also identified an increase in newer risks such as cyberattacks and communicable disease spread among people, such as with the COVID-19 pandemic, and among animals, such as the ongoing avian influenza outbreaks and spread of chronic wasting disease among deer. According to East Central Intergovernmental Association Director of Special Programs Jennifer Walker, who helped develop the plan, mitigating disaster damage is generally far less expensive than recovering from it. "Statistics show that for every $1 spent on mitigation, it saves $6 on what damage from a disaster would cost," she said. "These plans have played important roles for the area in receiving funding from FEMA for high -dollar projects like flood mitigation, tornado safe rooms and generators." Broad scientific consensus attributes the increase in natural disasters to human -accelerated climate change. Occurrences of more disasters have increased demand for relief funding, which has outpaced supply and made mitigation efforts more important, Berger said. "The funding is limited from the federal government," he said. "So you kind of want to think big, in case there is money there." The public is invited to provide input on the draft plan by emailing jwalker@ecia.org by Nov. 30. The plan then will be sent to the state government for approval before being forwarded to FEMA. TH Nov Jennifer Walker From: Randy Gehl < Rgehl@cityofdubuque.org > Sent: Wednesday, November 1, 2023 2:56 PM To: Jennifer Walker Subject: Re: [EXTERNAL] [SPF ERROR] Hazard Mitigation Plan g�. City of Dubuque Govemment i A_ Cast Central intergovernmental Association ' {�,•i3 A draft of the nv& Dubuque County hazard klitigat.ion Plan has been posted at: hopsjrldrive.gong$e,com/.,./?wzquEEOefwKitHXb-6k_x8LugCy.,.9. please send all public comments toivealkerC'ecia,org by November 30, 2023. No ;nsights to shout 0 03 Like Comment Snare Write a comment... From: Jennifer Walker <jwalker@ecia.org> Sent: Wednesday, November 1, 2023 11:33 AM To: Randy Gehl <Rgehl@cityofdubuque.org> Subject: RE: [EXTERNAL] [SPF ERROR] Hazard Mitigation Plan Yes, that would be great! If you can tell me where or send me screen shots, FEMA loves to know that kind of stuff. i 13.11 Public Notice During Drafting Stage EMERGENCY J GE ENT L%fiBUQUE COUNTY Ti caws L i§ar'gm Ulrcctcr MikU Vi JVF1ZL; , Claalrpcisorr Dan Nmn:an, VIGA-ChAIrperson PRESS RELEASE 1*428 Pjblir. SafrV %lay DuhrtquR, IA 5n02-62j@ Fhgne; 563-b8s-4i74 Fax: U-580.04115 For Immediate Release Contact: Toni Barger Public Input Sou{#trt for COUnty Hazard Mitigation Flan Dubuque Ccwrty, IA — A Planning nommittee comruised of representatives from D,ibuquc Courty, the incorporated cities, oubl'c school districts, and other stakeholders is currently updating the comp�eherisiv2 Dubuque County Multi -Jurisdictional hazard klitigatior. Plan. The Dubuque County Ha221'd fr' Npatbn Planning Commiltoo is soek'n9_pub4c input for tho plan update. A acirrmary of tta plan update effort; as veeil as a questionnaire to capture Public ctiinion ana comments, is available online at hf#psir�h�.v.sufvevrnonk v.rrt�rJl3:tt-CU tA., Hard copies of the questionnaire xvill alao Ix- available at the pubuqua County Courthouae, city hal's and !ocal fire stations in the county during nonnW operadrg hours. The survey wOli be availab-+e until July 14, 2017. The purpose of this outreach effort into prov,de inforrraticn to the public on the plan that is Laing updated as wall as ga;r. puHic Lgput. The *,an update viH address a owrprehensive list of hazards—rsngin g ` orn sevem %ovnter storms , and Clccdinp to hazardous matsria)s incidents and tornadoes and will assess the like y impacts of these hazards on communities and school disl-icts in aubucue County. Ths effort wiil also update current atrate,ies and identify additional methods to reduce the vr�inerai3ilrty Of residents and prcfsarty in the panic=pating isrisdictons from the impacts Df hazards as vwse,l as rnaintab elig blityfor partdci'pating jurisdictions for rnZigatica funding prograrrm admn riistered by the Federal-mergency Management Agency (FEMA), Tht: D abuque County Emergency+ blangagermerrr; Commission has ieken the lead in wcordinating the update & t.m plan [Ender the dirarr on of F_m.a-9en,".y Managarnant Coordirator -Tom Berger, The Courtty'nae, drawn on the expertise of consultants with Amec Fester Wheeler Environmort & Infrastructure, Inc.. a firth that specializes in hazad rnitigatian and emergency man agemen;. Feedback from the pubic will be incorporated into the draft plan. wh ch %vill be available for Public review ar�f comrnesat later this fall. Upon approval by the l ovra Homeland Secj. rhty and Emergency ManagBmetit Depaament and FEMA, tha plan will be prosented io the Dubuque County Board cf Suparvigam, city councils, and schoo' boards of each participating jursdiction for formal acoptlnn. For more informatictt on this :Draject_ contact Torr Sanger, at 583-580.4170 or via e-mail at turry lberger(d- d'xtcaema cram. uuouque Lounty, Iowa 13.40 Multi -Jurisdictional Hazard Mitigation Plan 2018 Appendix C Completed & Deleted Mitigation Actions from 2019 Goal # as appeared in 2019 Mitigation Action Description Changed/Completed/Deleted Asbury - 4 Obtain NOAA weather radios for Deleted every home in Dubuque County. Asbury - 8 Continue to add needed infrastructure to mitigate flood Deleted damage. Asbury — 12 Purchase two additional generators Changed for sewer lift stations as funds become available. Asbury - 15 Build new lift stations with generators in Changed place as determined by the City's continued growth. Asbury - 19 Buy out, acquire, and demolish damaged, Changed vulnerable, or endangered structures Bankston - 1 Consider building a tornado safe room for Deleted all new construction. Bernard - 11 Prepare for catastrophic event Deleted Bernard - 16 Continue to employ Good Neighbor Changed policy and Shelter in Place policy until better options are available. Cascade - 18 Update sewer treatment plant to meet Completed DNR standards. Dubuque - 24 Restore the Bee Branch Creek with open Changed channel from the 24t h St. neighborhood to E. 16t h St. retention basin, including the acquisition of approximately 70 homes and businesses. Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 304 Goal # as appeared in 2019 Mitigation Action Description Changed/Completed/Deleted Dubuque - 12 Bee Branch Creek Railroad Culvert Completed Improvements Dyersville - 7 Upgrade wastewater treatment facility/system Completed capacity to address issues experience during periods of heavy rains and floods. Dyersville - 27 Buy out, acquire, and demolish damaged, Changed vulnerable, or endangered structures Sageville - 2 Provide backup power generators and wiring Deleted for critical facilities. Unincorporated County - 10 Improve the drainage system of the Changed Sageville/Couler Valley Drainage System. The proposed project consisted of the grading and reshaping of the drainage area, protection of Flexsteel Industries for excess drainage, and construction of the Herber Road bridge and roadway elevation. Unincorporated County - 11 Work with the Iowa Department of Completed Transportation (IDOT) to resolve flooding to the east of John Deere Road in the Sageville/Couler Valley Drainage System. Worthington - 10 Continue to add needed infrastructure to Deleted mitigate flood damage. Farley - 2 Obtain NOAA weather radios for every home Deleted in Dubuque County. Farley - 5 Continue to add needed infrastructure to Completed mitigate flash flood damage. Farley - 9 Maintain procedure to backup all critical Completed data to prevent loss in the event of hazard. Appendix D Adoption Resolutions Alpha by Jurisdiction Jurisdiction Date Adopted Unincorporated Dubuque County February 5, 2024 Asbury November 28, 2023 Balltown January 24, 2024 Bankston January 21, 2024 Bernard January 17, 2024 Cascade January 22, 2024 Centralia March 5, 2024 Dubuque Durango February 6, 2024 Dyersville November 20, 2023 Epworth November 8, 2023 Farley November 15, 2023 Graf January 2, 2024 Holy Cross November 7, 2023 Luxemburg New Vienna November 8, 2023 Peosta November 14, 2023 Rickardsville December 13, 2023 Sageville February 12, 2024 Sherrill November 21, 2023 Worthington November 20, 2023 Zwingle February 13, 2024 Dubuque Community School District February 12, 2024 Northeast Iowa Community College December 18, 2023 Western Dubuque Community School District February 13, 2024 Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 305 Appendix E Critical/Essential Facilities (Redacted) Dubuque County, IA Multi -Jurisdictional Hazard Mitigation Plan - 2024 306 1 Adrienne Breitfelder From:Jennifer Walker <jwalker@ecia.org> Sent:Tuesday, April 9, 2024 1:37 PM To:clerk@citycascade.com; irvin35555@gmail.com; cityofdurango52039@gmail.com; nvmayor1@gmail.com; kdschmitt@mchsi.com; sagevillemayor@gmail.com; mayor@cityofpeosta.org; Mike Van Milligen; Megan Brehm; emmamckeon0 @gmail.com; Tricia Maiers; Angie Oberbroeckling; Angie Oberbroeckling; cityofrickardsville@gmail.com; worthingtoniowa@outlook.com; Karla Mahoney; Jim Adams; Sherri Sigwarth; 'Rick Stoffel'; Megan Brehm; mmichel@cityofdyersville.com; bmaiers@gosafeguard.com; epworth@yousq.net; cityofballtown@gmail.com; Betty Mausser; ebonz@cityofasbury.com; holycrosscity@gmail.com; admin@citycascade.com; jjacque@cityofdyersville.com; Sandra Gassman; jay.hefel@farleyiowa.com; rickardsvillemayor@gmail.com; rogeroberbroeckling@ymail.com; graf.iowa@gmail.com; ljsmock@windstream.net; melissaschmitt@hotmail.com; graf.iowa@gmail.com; citysherrill@gmail.com; djberinger@aol.com; Doug Hummel; Sara Burke; clerk@citycascade.com; meganscmitt@icloud.com; aernst@cityofpeosta.org; kelly.ludwig@farleyiowa.com; Adrienne Breitfelder; cityofsageville@gmail.com; jessi@epworthiowa.org; cityclerk@farleyiowa.com; mwinkelman@cityofpeosta.org Cc:Powers, Robert; Tom Berger; Ann McDonough; Harley Pothoff; wayne.kinnicker@dubuquecountyiowa.gov; Ed Raber; Bob Hingtgen; Craig Bahl; Cori Burbach; jwalker@ecia.org Subject:Dubuque County Hazard Mitigation Plan Approved Attachments:Dubuque Co IA HMP apvltr 2024.docx.pdf Caution! This message was sent from outside your organization. Never give your login information and password over email! Allow sender | Block sender Hello All, The Dubuque County Hazard Mitigation Plan Update has been oicially approved by FEMA. See attached for approval letters and dates. The complete plan can be found using the link below: https://drive.google.com/drive/folders/1VM9BVdS-keJvAXzJJBhjWhIPr5RlzQDe?usp=sharing Thank you, Jennifer Walker Director of Special Programs ECIA/CSEI 7600 Commerce Park Dubuque, IA 52002 563-556-4166 www.ECIA.org www.CSEIOWA.org U.S. Department of Homeland Security FEMA Region 7 11224 Holmes Road Kansas City, MO 64131 www.fema.gov April 3, 2024 Director Benson Iowa Department of Homeland Security and Emergency Management 7900 Hickman Rd. Suite 500 Windsor Heights, IA 50234 Subject: Approval of the Dubuque County Hazard Mitigation Plan Director Benson: In accordance with applicable 1 laws, regulations and policy, the Risk Analysis Branch of the Federal Emergency Management Agency (FEMA) Region 7 has approved the Dubuque County Hazard Mitigation Plan. The attached Local Mitigation Plan Review Tool lists participants receiving approval that have submitted required adoption documentation. The approval period for this plan is from April 1, 2024, through March 31, 2029. The same official plan expiration date applies to all participating jurisdictions, regardless of adoption date. An approved mitigation plan is one of the conditions for applying for and receiving FEMA mitigation grants from the following programs: ƒ Hazard Mitigation Grant Program (HMGP) ƒ HMGP Post-Fire ƒ Building Resilient Infrastructure and Communities ƒ Flood Mitigation Assistance Based on FEMA’s review, the plan did not meet all elements required for the Rehabilitation of High Hazard Potential Dams (HHPD) grant program. Thus, the participating jurisdictions are not eligible for assistance from the HHPD Grant Program at this time. If any participating jurisdictions with HHPDs are interested in this assistance, they should contact the FEMA regional mitigation planner identified below to learn more about how to meet the required mitigation planning elements for this program. Having an approved mitigation plan does not mean that mitigation grant funding will be awarded. Specific application and eligibility requirements for the programs listed above can be found in each FEMA grant program’s respective policies and annual Notice of Funding Opportunities, as applicable. 1 Robert T. Stafford Disaster Relief and Emergency Assistance Act, as amended; the National Flood Insurance Act of 1968, as amended; and National Dam Safety Program Act, as amended; 44 CFR Part 201, Mitigation Planning; and Local Mitigation Planning Policy Guide (FP-206-21-0002). Director Benson Approval of the Dubuque County Hazard Mitigation Plan Page 2 www.fema.gov To avoid a lapsed plan, the next plan update must be approved before the end of the approval period, including adoption by the participating jurisdictions. Before the end of the approval period, please allow sufficient time to secure funding for the update, including the review and approval process. Please include time for any revisions, if needed, and for the jurisdiction to formally adopt the plan after the review, if not adopted prior to submission. This will enable them to remain eligible to apply for and receive funding from FEMA’s mitigation grant programs with a mitigation plan requirement. Local governments, including special districts, with a plan status of “Approvable Pending Adoption” are not eligible for FEMA’s mitigation grant programs with a mitigation plan requirement. We look forward to discussing options for implementing this mitigation plan. If you should have any questions or concerns, please contact Joe Chandler, Planning Team Lead, at (816) 808-9016 or joe.chandler@fema.dhs.gov. Sincerely, Laurie L. Bestgen, Director Mitigation Division Attachment: Local Mitigation Plan Review Tool LAURIE L BESTGEN Digitally signed by LAURIE L BESTGEN Date: 2024.04.03 10:01:23 -05'00'