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Flood zone · Michigan

Flood zone in Michigan

Flood zone (FEMA NFHL) data for ZIP codes in Michigan. Pick a ZIP below to dive into the flood zone summary.

Last verified 2026-05-13 · methodology

What lands here

Pages show the flood zone code, what it means in plain English (1% annual chance zone, 0.2% annual chance zone, or outside mapped hazard), and the base flood elevation where assigned.

Source & refresh

FEMA NFHL. Refreshed quarterly loma updates. Primary source →

Michigan top concern

Lead pipes (post-Flint), Great Lakes erosion

Michigan's LCRR obligations are among the heaviest in the US — Detroit, Flint, Benton Harbor, Lansing all carry significant lead-service-line replacement commitments. Great Lakes shoreline erosion expands FEMA AE zones in some lakefront counties.

See Michigan state page for the full state-level rollup across all 12 dimensions.

Read more on flood zone

Editorial deep-dives explaining the source data, its limits, and how to read it.

6 Michigan ZIPs