Missoula and Granite Counties are working with MT DNRC and FEMA to update and produce new Flood Insurance Rate Maps (FIRMS) for the Clark Fork River, Bitterroot River, Rock Creek, and Rock Creek Tributaries. Updated floodplain maps will depict the latest, most accurate flood risk data, and will eventually replace the existing floodplain maps which are based on data from the 1970s.

For more information, see: Background on existing floodplain maps and Flood Study Process. 

         Missoula-Granite Hydrologic Analysis Report: Pioneer Technical Services; July 8, 2020                     

DNRC held project kickoff meetings on October 23, 2019 with Missoula County and the City of Missoula. To view the slides that were presented click here.

Below are the study extents for the project. To view a larger image, click here.

Below is the tentative project timeline.