FEMA flood map notices
Flood map changes in Chemung County, New York
FEMA has published 1 flood hazard notice covering Chemung County, New York since November 2023. The most recent, map revision flood hazard determinations, was published Sep 10, 2026.
Notices for Chemung County
- Sep 10, 2026Map revisionChanges in Flood Hazard DeterminationsAlso covers 26 other counties
Also covered by these notices
FEMA often studies whole watersheds, so one notice can span several counties.
- Madison County, AL
- Brevard County, FL
- Charlotte County, FL
- Lee County, FL
- Monroe County, FL
- Volusia County, FL
- Black Hawk County, IA
- Seward County, KS
- Harrison County, KY
- Macomb County, MI
- Dakota County, MN
- Marshall County, MN
- Gaston County, NC
- Mecklenburg County, NC
- Wake County, NC
- Chester County, PA
- York County, PA
- Bexar County, TX
- Burnet County, TX
- Collin County, TX
- Ellis County, TX
- Lubbock County, TX
- Rockwall County, TX
- Tarrant County, TX
- Prince William County, VA
- Brown County, WI
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