1 appeal window open

Flood map changes in Michigan

Since November 2023, FEMA has published flood hazard notices covering 27 of Michigan's 83 counties.

CountyNoticesMost recentAppeal window
Macomb County7Sep 10, 2026—
Ingham County1Aug 6, 2026Open until Nov 4, 2026
Washtenaw County2Aug 6, 2026—
Wayne County5Aug 6, 2026—
Monroe County1Jul 9, 2026—
Bay County5Jun 11, 2026—
Clare County2Jun 11, 2026—
Isabella County2Jun 11, 2026—
Shiawassee County2Jun 11, 2026—
Van Buren County4May 18, 2026—
Chippewa County2May 7, 2026—
Kent County5May 7, 2026—
Huron County1Dec 8, 2025—
Antrim County1Oct 2, 2025—
Branch County1Oct 2, 2025—
Hillsdale County1Aug 20, 2025—
St. Joseph County1Aug 6, 2025—
Kalamazoo County5Jul 18, 2025—
Berrien County5Mar 26, 2025—
Cass County1Feb 24, 2025—
Oakland County6Jan 8, 2025—
Baraga County1Jun 7, 2024—
Genesee County2May 31, 2024—
Saginaw County2May 31, 2024—
Menominee County1Apr 1, 2024—
Marquette County1Jan 29, 2024—
Grand Traverse County1Nov 9, 2023—

All counties in Michigan

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