Floodplain Regulation

Pursuant to the Montana Floodplain and Floodway Management Act (Title 76, Chapter 5 MCA) and the Gallatin County Floodplain Regulations, the Gallatin County Planning Department regulates development in the 100-year floodplain through the issuance of floodplain permits.  
If you are located near a river and intend to build a home or some other structure, please contact the Planning Department regarding the need for a floodplain permit.