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Mitigation Assessment Team Report on
Midwest Floods of 2008In Iowa and Wisconsin
MnAFPM & WAFSCM2008 MIDWEST FLOODS 2
Iowa Rivers and MAT Visits
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Wisconsin Rivers and MAT Visits
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Cedar Rapids Flood Zones and Actual Inundation
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Cedar Rapids, Iowa
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Cedar Rapids, Iowa
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Cedar Rapids, Iowa
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Flooding at Mercy Medical Center
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Gays Mills, Wisconsin
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Reedsburg, Wisconsin
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Numerous Foundation Wall Failures
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Prematurely Pumped Water Out of Basement
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Coralville, Iowa
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Coralville, Iowa
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Coralville, Iowa
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Idyllwild Subdivision
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1 2
3 4
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Oakville, Iowa
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Oakville, Iowa
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Oakville, Iowa
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Oakville, Iowa
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Recent Elevated Construction
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2
3
1
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2
3
1
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Openings
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Elevation, Post-Event
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Elevation, Post-Event
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Elevation, Post-Event
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Elevation, Post-Event
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Dry Floodproofing
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Poorly Located Utilities
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Raised Utilities, Pre-Event
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Raised Generator, Post-Event
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Cedar Rapids Critical Facilities
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Cedar Rapids Critical Facilities
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Underground Parking Structure
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Access Tunnel to Courthouse
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CRPD Headquarters
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CRPD Headquarters
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Reedsburg WWTF
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Reedsburg WWTF
Earthen
berm
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Reedsburg WWTF Access Road
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Baraboo WWTF
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Baraboo WWTF
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Baraboo WWTF
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Baraboo WWTF Access Road
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Des Moines Water Works
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Des Moines Water Works
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Floodplain Debris
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Acquisitions
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Conclusions and Recommendations
Basements
– removing/filling in the basement when rebuilding
– reinforcing foundation walls during repairs
– outreach on hazard associated with prematurely pumping water out of their basements
Foundations
– importance of securing existing buildings that are being elevated on new foundations
– openings in foundation walls in accordance with published FEMA guidance
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Conclusions and Recommendations
Residential development
– elevation as it relates to new construction and adopting
freeboard requirement for additional protection
– substantial improvements and repair of substantially
damaged properties
– consideration of installing backflow prevention valves to
prevent avoidable flooding in buildings
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Conclusions and Recommendations
Critical Facilities
– site selection for new and replacement facilities
– location of equipment and utilities
– systematic reduction of inflows from major users
– staging of emergency equipment
Mitigation grant programs
– Acquisition
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Conclusions and Recommendations
Floodplain management
– flood risk communication
– promotion of the National Flood Insurance Program
Community Rating System
– sources of debris in the floodplain
– locally run programs to fund mitigation projects
– flood insurance and mapping
FEMA Building Science
Flood/Wind Building Science Helpline:
(866) 927-2104
http://www.FEMA.gov/Rebuild/BuildingScience
