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Flood Damage Reduction Making Stormwater Management Systems Reduce Flood Damages

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Flood Damage Reduction Making Stormwater Management Systems Reduce Flood Damages D. Leslie Miller, P.E. Flood Preparedness Program Manager. Fighting Floods – “So what” Factor…. March 2008 Cape Girardeau, MO successful flood fight – raised levee height with sandbags

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slide1
Flood Damage Reduction

Making Stormwater Management Systems Reduce Flood Damages

D. Leslie Miller, P.E.

Flood Preparedness Program Manager

fighting floods so what factor
Fighting Floods – “So what” Factor….

March 2008 Cape Girardeau, MO successful flood fight – raised levee height with sandbags

May 2001 Davenport, IA successful sandbagging flood fight of John O-Donnell Stadium

May 2002 Crystal City, MO successful sandbagging flood fight of Dairy Queen

slide3
PerspectiveKeep rain as close to where it falls…even when it exceeds stormwater retention system designs….

Design system so they can safely retain a much larger volume of run off…by using emergency operations….

basics
Basics

Design

Plan

Rehearse

basics why where what when how and who flood fight design plan then rehearse
Basics – Why, where, what, when, how and who … Flood Fight Design & Plan…then Rehearse….
  • Right & legal priority
  • Specific location & access (Real Estate agreements)
  • Coordinated Emergency Operations
  • Warning & triggering
  • Collaborative design
  • Identified Resources
  • Assigned Responsibilities
  • Remember to cover preparation, prevention, response and recovery
  • Link it to permanent mitigation
some reasons for designing a stormwater system to accommodate emergency operations
Some reasons for designing a stormwater system to accommodate emergency operations
  • Provides an opportunity to convert new flood science, technology, historical and anecdotal accounts into a cost, time and resource effective way of reducing flood related damages
  • Becomes part of community flood fight design and plan
  • Allows neighbors to contribute (planning, training, exercising, stockpiling…placing…removing)
  • Builds a collaborative vision (changes stagnant feature into dynamic possibilities)
  • Increases chance of successfully reducing flood damages beyond the stormwater system
stormwater system design considerations to accommodate emergency operations
Stormwater system design considerations to accommodate emergency operations
  • Modifications to new and existing retention structures
  • Assess how much increase storage capacity is available
  • Embankment vs. walls
  • Natural vegetated crowns vs. four season surface
  • Width of crown for access and placement of temporary height and length extention
  • Include worst case assumptions about material and processes used to place and remove the temporary structure
  • Spillway or overtopping back slope protection
flood fight tools to consider
Flood Fight Tools To Consider
  • Sandbags
  • Baskets
  • Geotechnical Grids
  • Impervious Fabrics
  • Water Filled Bladders
  • Water Weighted Floaters
  • Barricades
  • Agricultural Products and Containers
  • Pumps
  • Web Sites
flood fighting structures demonstration and evaluation program
Flood-Fighting Structures Demonstration and Evaluation Program
  • US Army Corps of Engineers
  • Engineering Research and Development Center
  • Laboratory and Field Testing in Vicksburg, Mississippi
  • ERDC TR-07-3 Report – July 2007
  • Evaluated 4 foot high level of protection:
    • Sandbag Levee
    • Hesco Bastion Concertainer Levee
    • Rapid Deployment Flood Wall (RDFW)
    • Portadam Levee
slide10

Typical Pyramid Sandbag Placement

3 to 1 Base/Height Ratio

portadam
Portadam

Hydrostatic Loading Creates Seal to Stream Bed

portadam1
Portadam

Pallet & Plastic Flood Fight Design

Hydrostatic Loading

summary
Summary
  • Know why – stay committed
  • Write it down – get everyone involved
  • Pick the right tools – one(s) you believe will work for your site and circumstances
  • Make it fun – rehearse your plan
    • Include everyone in your plan
    • Play with your “right tools”
    • Celebrate together…cookies and milk anyone
corps information web sites
http://www.metalithh2o.com/assets/pdfs/USACE_NonFed-Levee-Owners-Manual_Mar06.pdfhttp://www.metalithh2o.com/assets/pdfs/USACE_NonFed-Levee-Owners-Manual_Mar06.pdf

http://chl.erdc.usace.army.mil/ffs

Corps Information - Web Sites
flood fight technology web sites in order of presentation
Flood Fight Technology - Web Sites(In order of presentation)
  • http://hesco-bastion.com/
  • http://www.geocellsystems.com/index.htm
  • http://www.portadam.com/index.html
  • http://www.aquafence.com/index.html
  • http://www.aquadam.com/index.htm
  • http://www.floodwalls.com/FloodWalls/index.htm
  • http://www.hydroresponse.com/wipp.htm
  • http://www.usfloodcontrol.com
  • http://www.hydroresponse.com/flood_barrier.htm
  • http://www.hydroresponse.com/watergate.htm
  • http://www.hydroresponse.com/floodgate.htm
  • http://www.musclewall.com
where do you choose to go from here
Where do “you choose” to go from here?

For more information about flood fight design, planning and tools, please have your state or county Emergency Management Office contact me and I will get you in contact with the Corps office serving your area:

D. Leslie Miller, P.E.

Flood Preparedness Program Manager

Readiness Branch (CENWP-OD-E)

Portland District, U.S. Army Corps of Engineers

333 SW 1st Avenue

Portland, Oregon 97204-3495

503-808-4400

[email protected]

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