FEMA flood map notices

Flood map changes in Ohio

Since November 2023, FEMA has published flood hazard notices covering 21 of Ohio's 88 counties.

CountyNoticesMost recentAppeal window
Butler County10Aug 21, 2026—
Delaware County3Aug 21, 2026—
Franklin County9Aug 21, 2026—
Lorain County6Aug 6, 2026—
Lucas County6Jun 11, 2026—
Shelby County2Jun 11, 2026—
Washington County2Jun 11, 2026—
Fairfield County6Jan 29, 2026—
Lake County2Jan 29, 2026—
Auglaize County2Aug 6, 2025—
Warren County4Dec 13, 2024—
Hamilton County2Aug 22, 2024—
Montgomery County2Aug 12, 2024—
Athens County1Jun 7, 2024—
Licking County4May 31, 2024—
Logan County2May 31, 2024—
Summit County2May 31, 2024—
Allen County1Mar 18, 2024—
Hardin County1Mar 18, 2024—
Preble County1Dec 26, 2023—
Miami County1Nov 9, 2023—

All counties in Ohio

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