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Maps by County

Draft Flood Hazard Maps (DFHM)
One-percent annual (100-year) flood boundary and 0.2-percent annual (500-year) floodplain boundaries

Preliminary Flood Insurance Rate Maps (Preliminary)
One-percent annual (100-year) flood boundary and 0.2-percent annual (500-year) floodplain boundaries under review for adoption by FEMA and the NFIP

Flood Insurance Rate Maps (FIRM)
One-perecent annual (100-year) flood boundary and 0.2-percent annual (500-year) floodplain boundaries adopted by FEMA and the NFIP. While these data are provide for informational purposes, any data to be used for regulatory purposes should be obtained directly from the Federal Emergency Management Agency (https://www.fema.gov/)

Draft flood hazard products created by the Iowa Flood Center will be available as they are completed.

Click the county below to view the maps:

Adair (Preliminary)FloydMonona
Adams (Preliminary)FranklinMonroe (DFHM)
AllamakeeFremont (DFHM)Montgomery (Preliminary)
Appanoose (DFHM)Greene (Preliminary)Muscatine
Audubon (Preliminary)GrundyO'Brien
BentonGuthrie (Preliminary)Osceola
Black HawkHamiltonPage (Preliminary)
BooneHancockPalo Alto
BremerHardinPlymouth
BuchananHarrisonPocahontas (Preliminary)
Buena VistaHenryPolk (Preliminary)
ButlerHowardPottawattamie
Calhoun (Preliminary)Humboldt (Preliminary)Poweshiek (Effective FIRM)
Carroll (Preliminary)IdaRinggold (Effective FIRM)
Cass (Preliminary)IowaSac
CedarJacksonScott
Cerro GordoJasperShelby (Effective FIRM)
CherokeeJeffersonSioux
ChickasawJohnsonStory
Clarke (DFHM)JonesTama
ClayKeokukTaylor (Preliminary)
ClaytonKossuthUnion (Preliminary)
ClintonLeeVan Buren
CrawfordLinnWapello
Dallas (Preliminary)LouisaWarren (Preliminary)
Davis (DFHM)Lucas (DFHM)Washington
Decatur (DFHM)LyonWayne (DFHM)
DelawareMadison (Preliminary)Webster
Des MoinesMahaskaWinnebago
DickinsonMarion (DFHM)Winneshiek
DubuqueMarshallWoodbury
EmmetMills (DFHM)Worth
FayetteMitchellWright

*Designates work to be completed by the U.S. Army Corps of Engineers.

 

Last modified on August 24th, 2015
Posted on October 21st, 2013