FEMA flood map notices
Flood map changes in District of Columbia, District of Columbia
FEMA has published 1 flood hazard notice covering District of Columbia, District of Columbia since November 2023. The most recent, map revision flood hazard determinations, was published Aug 12, 2024.
Notices for District of Columbia
- Aug 12, 2024Map revisionChanges in Flood Hazard DeterminationsAlso covers 20 other counties
Also covered by these notices
FEMA often studies whole watersheds, so one notice can span several counties.
- Arapahoe County, CO
- Boulder County, CO
- Douglas County, CO
- Jefferson County, CO
- Sussex County, DE
- Bay County, FL
- Hillsborough County, FL
- Lee County, FL
- Monroe County, FL
- Orange County, FL
- Palm Beach County, FL
- Sumter County, FL
- Volusia County, FL
- Frederick County, MD
- Lehigh County, PA
- Luzerne County, PA
- Denton County, TX
- Kaufman County, TX
- Kendall County, TX
- Laramie County, WY
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