Madison County Draft/Preliminary Floodplain Mapping Update Information

Madison County and the Towns of Ennis, Sheridan, and Twin Bridges have been working with FEMA, Montana DNRC and neighboring counties to conduct new flood studies and update floodplain maps on the Madison, Jefferson and Ruby Rivers and Tributaries. Updated floodplain maps will provide more reliable and detailed information about flood-prone areas. Previous FEMA floodplain maps and Madison County flood prone maps are based on data from the 1980s and 1990s.

Postcard notifications were mailed to affected property owners with dates of two public open house meetings. Public open houses meetings are an opportunity for affected property owners to obtain more information and learn how the proposed mapping changes may directly affect your property.

                                                         public open house meeting date/times:

Wednesday, July 19, 2023 - 5:30-7:30 PM MST          Thursday, July 20, 2023 - 5:30-7:30 PM MST
 Twin Bridges School – Montana Room                           Madison Valley Public Library 
 216 W 6th Avenue - Twin Bridges, MT                                 216 E Main Street - Ennis, MT 

To view the Preliminary/Draft Mapping please visit: 

To review FEMA Preliminary Flood Insurance Rate Maps (FIRM) & Flood Insurance Study (FIS) for Madison County, Montana and Incorporated Areas please visit: