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Floodplain Information

Flood PictureThe City of Johnston participates in the National Flood Insurance Program and has adopted regulations to manage development in floodplains.  The Floodplain regulations adopted by the Johnston establish a Flood Fringe (FF) overlay district and a FW (FW) overlay district.  The regulations are found in Chapter 17.20 of the Zoning Ordinance which outline permissible development in those areas. 

To determine if your property is within the floodplain you will need to review the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Maps, copies of these maps are available at City Hall for review. Electronic copies of the maps are also available from FEMA's website (offsite link).

For additional floodplain information, please contact the Community Development Department at 515-727-7765 or by email.