Flood Plain Map Updates

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The Iowa Department of Natural Resources and the Federal Emergency Management Agency (FEMA) are working with the City of Ames to present preliminary floodplain maps to Ames and Story County citizens. 


Flooding is the number one natural disaster in the United States. It is vital that property owners understand their risk and take advantage of tools or programs available to them, including flood insurance. These preliminary maps are an update of the existing maps, which date back to 2008, and will become the basis for local community’s floodplain management measures. Insurance companies will use the maps to determine flood insurance rates for buildings and contents.

As a result of these map changes, some buildings throughout Story County may, for the first time, be included in a high-risk flood zone, known as the Special Flood Hazard Area. This may result in those affected property owners being required to purchase flood insurance.


New flood plain map
Individual FIRM Index Maps can be found here.


Upcoming Events

The Iowa Department of Natural Resources and FEMA will host a public open house on Wednesday, Jan. 16, 2019, from 5:30 to 7:30 pm at the City of Ames Water Plant Main Conference Room, 1800 E 13th St.

There will be no formal presentation, and participants are welcome to come and go throughout the two-hour event.

The open house will provide property owners an opportunity to view the preliminary maps and learn how their flood risk may have changed. Representatives from FEMA and the Iowa DNR will be on hand to answer questions and address residents’ concerns about the preliminary flood maps.


More Information 

Iowa Department of Natural Resources

Jason Conn: Jason.Conn@dnr.iowa.gov

City of Ames Planning Department

Justin Moore: Jrmoore@cityofames.org