The Montana floodplain mapping program helps communities across the state identify flood risks. Identifying flood risk can help keep your home and local community safe from future flood events. Floodplain maps should be your go-to tool in learning about your risk. 

Flood risk changes over time, floodplain maps will require periodic updates. It could be because of several things such as, the age of the flood study, if there has been a lot of change or development in the area, or due to a flooding event. Flood studies now are done in collaboration with communities, DNRC, and FEMA.The floodplain program develops a comprehensive plan to outline future mapping projects. To view that plan click here.

Flood studies today use the best available data and technology. This includes high-accuracy topographic information, updated hydrologic data, and modern engineering methods. To understand what goes into a flood study click here to learn more




Mapping Projects and Resources

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