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In partnership with the Iowa Department of Natural Resources (IDNR) and with contributions from the U.S. Army Corps of Engineers, the Iowa Flood Center (IFC) is nearing completion of statewide floodplain map products. The information is accessible through two web-based interfaces:

Draft Flood Hazard Products

Draft flood hazard maps delineate boundaries of flooded areas for the 1-percent annual chance (100-year) and 0.2-percent annual chance (500-year) flood. In some instances, the data are being used to create or update FEMA Flood Insurance Rate Maps (FIRMs).

The award-winning IDNR Draft Flood Hazard Outreach Program allows communities opportunities learn about the draft maps and provide feedback, greatly improving public understanding and map accuracy, and streamlining the path to FEMA adoption.

Flood Risk Management Maps

Flood risk management maps show flood boundaries and depths for 50-, 20-, 10-, 4-, 2-, 1-, 0.5-, and 0.2-percent annual chance floods and highlight floodplain areas with high likelihood of scour during flood events.


Important Note: While some of the products created may be adopted by FEMA and become regulatory, maps provided at the Iowa Flood Maps link are not regulatory maps. The products are provided on this site for informational purposes. Iowans interested in map information for flood insurance purposes should visit the FEMA Map Service Center or contact local officials to view the current regulatory map for their jurisdiction.

Last modified on October 21st, 2019
Posted on September 27th, 2013

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  1. […] Both the Draft Flood Hazard Maps and the Flood Risk Management Maps are available for public use at […]