HDR presentation documents City of Dubuque
City Council Work Session
December 9, 2002
Storm Water Managem~t
Bee Branch Drainage Basin Improvements
I-DR rrm
Council Interview Common Themes
· Describe Alternative Selection Froeess
· ~ Solve Upstream to Greatest Extent
· Urban Conservation/Sustainable Design
· Maximize West 32nd Street Detention Cell
· Hydrolo~c Assumptions/1999 Experience
· Public Outreacb/hfformation Fair
· Show a Channel Alignmeaffttow Would it Look?
Presentation Outline
· Storm Water Management Overview
· Bee Branch Drainage Basin
· West 32ud Street Subare~
· Where We Go From Here
Tools to Manage Storm Water
Runoff Reduction
Timing Changes
Storage
Increase Capacity
Master Planning Process
lnput
Bee Branch Drainage Basin ]
2
Bee Branch Drainage Basin
Bee Branch
Drainage
Basin
Flood
Inundation -
Existing
System
Bee Branch Drainage Basin
Flood Minimization Alternative
Improvements
3
West 32nd Street Subarea
West 32nd Street Drainage Subarea
] 00-Year Alternatives Evaluated
West 32nd Street Drainage Subarea
Detention Site Alternatives
4
West 32nd Street Subarea
Alternative Evaluation
Alt Description Capital Cost
No. (millions) Con,meats
Bee Branch Drainage Basin
100-Year Flood Inundation
Remaining Bee Branch Drainage Subareas
Remaining Bee Branch Drainage
Subareas Detention Site Alternatives
Bee Branch Findings Before
Alternatives Were Developed
Operating Conditions
6
Bee Branch Drainage Basin
Flood Minimization Alternative
Improvements
Bee Branch Drainage Basin
Open Channel Floodway Alternative
Examples of Open Channels in an
Urbanized Area
7
Conceptual Rendering of an Open
Channel in Dubuque
Where We Go From Here
Alignment Development
Information Gathering/Public Outreach
Commm~t~ Impacts Der erm[uation