FEMA flood map notices
Flood map changes in Gallatin County, Montana
FEMA has published 2 flood hazard notices covering Gallatin County, Montana since November 2023. The most recent, map revision flood hazard determinations, was published Sep 12, 2024.
Notices for Gallatin County
- Sep 12, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 32 other counties
- May 13, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 28 other counties
Also covered by these notices
FEMA often studies whole watersheds, so one notice can span several counties.
- Saline County, AR
- Yavapai County, AZ
- Arapahoe County, CO
- Larimer County, CO
- Weld County, CO
- Charlotte County, FL
- Escambia County, FL
- Lake County, FL
- Lee County, FL
- Orange County, FL
- Pasco County, FL
- Seminole County, FL
- Sumter County, FL
- Essex County, MA
- Penobscot County, ME
- York County, ME
- Brunswick County, NC
- Buncombe County, NC
- Randolph County, NC
- Union County, NC
- Wake County, NC
- Wilkes County, NC
- Horry County, SC
- Jasper County, SC
- Bexar County, TX
- Brazos County, TX
- Collin County, TX
- Comal County, TX
- Dallas County, TX
- Denton County, TX
- Fort Bend County, TX
- Grayson County, TX
- Harris County, TX
- Kaufman County, TX
- McLennan County, TX
- Tarrant County, TX
- Waller County, TX
- Williamson County, TX
- Salt Lake County, UT
- Washington County, UT
- Jefferson County, WV
What these notices mean
- Proposed
- FEMA has new draft flood maps. This starts a 90-day window when owners can appeal with technical data. It's the best time to act.
- Final
- Appeals are resolved. The new maps usually take effect about six months later, when lenders start applying the new zones.
- Map revision
- A Letter of Map Revision changes one stretch of the map, often after a levee, channel project or new survey.
Notices are organized by county and community, so a notice for your county doesn't mean your property is changing zones. What flood zones mean