Swan Flood Study

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Swan River 1

Missoula County is currently working with FEMA and Montana DNRC to update floodplain maps for the Swan River. The new maps are intended to provide more reliable and detailed information about flood-prone areas along the Swan River.

 Swan Flood Study Timeline

For more information on the floodplain maps, please contact Todd Klietz with Missoula County (406.258.4841) or Tiffany Lyden with MT DNRC (406.444.0599).

FEMA has closed the official 90-day Comment And Appeal Period. The changes were finalized on September 7, 2018. 

On May 25, 2018, the Board of County Commissioners adopted the March 30, 2017 Swan River Preliminary Flood Insurance Rate Maps as flood information

View the floodplain changes:

Follow the links above to see the floodplain changes and information.






Swan River 2

See Index Map and subsequent floodplain maps below. The maps will be official for flood insurance purposes on March 7, 2019.