Coastal Flood Risk in Michigan
All Michigan counties ranked by FEMA National Risk Index coastal flood score
Coastal Flood risk — seawater inundation from storm surge, high tides, and rising sea levels — is rated for 41 of 83 Michigan counties in FEMA's National Risk Index. Wayne County carries the state's highest coastal flood score at 49.6, with $90K in expected annual coastal flood losses.
No Michigan county reaches the High band for coastal flood, and expected annual losses from coastal flood total roughly $561K statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Coastal Flood
| # | County | Coastal Flood Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Wayne County | Low | 0.01 / yr | $90K | |
| 2 | Macomb County | Low | 0.01 / yr | $66K | |
| 3 | St. Clair County | Low | 0.01 / yr | $57K | |
| 4 | Monroe County | Low | 0.01 / yr | $60K | |
| 5 | Bay County | Low | 0.01 / yr | $51K | |
| 6 | Chippewa County | Low | 0.02 / yr | $39K | |
| 7 | Huron County | Very Low | 0.02 / yr | $29K | |
| 8 | Iosco County | Very Low | 0.01 / yr | $16K | |
| 9 | Arenac County | Very Low | 0.01 / yr | $12K | |
| 10 | Berrien County | Very Low | 0.01 / yr | $13K | |
| 11 | Menominee County | Very Low | 0.01 / yr | $10K | |
| 12 | Cheboygan County | Very Low | 0.01 / yr | $8K | |
| 13 | Leelanau County | Very Low | 0.01 / yr | $10K | |
| 14 | Mackinac County | Very Low | 0.01 / yr | $7K | |
| 15 | Delta County | Very Low | 0.01 / yr | $8K | |
| 16 | Alpena County | Very Low | 0.01 / yr | $7K | |
| 17 | Ottawa County | Very Low | 0.01 / yr | $12K | |
| 18 | Marquette County | Very Low | 0.01 / yr | $7K | |
| 19 | Muskegon County | Very Low | 0.01 / yr | $7K | |
| 20 | Mason County | Very Low | 0.01 / yr | $5K | |
| 21 | Grand Traverse County | Very Low | 0.01 / yr | $8K | |
| 22 | Tuscola County | Very Low | 0.02 / yr | $6K | |
| 23 | Emmet County | Very Low | 0.01 / yr | $6K | |
| 24 | Alcona County | Very Low | 0.01 / yr | $3K | |
| 25 | Baraga County | Very Low | 0.01 / yr | $3K | |
| 26 | Allegan County | Very Low | 0.01 / yr | $4K | |
| 27 | Manistee County | Very Low | 0.01 / yr | $3K | |
| 28 | Benzie County | Very Low | 0.01 / yr | $3K | |
| 29 | Oceana County | Very Low | 0.01 / yr | $3K | |
| 30 | Sanilac County | Very Low | 0.01 / yr | $2K | |
| 31 | Charlevoix County | Very Low | 0.01 / yr | $3K | |
| 32 | Van Buren County | Very Low | 0.01 / yr | $1K | |
| 33 | Antrim County | Very Low | 0.00 / yr | $0 | |
| 34 | Alger County | Very Low | 0.01 / yr | $0 | |
| 35 | Presque Isle County | Very Low | 0.01 / yr | $0 | |
| 36 | Ontonagon County | Very Low | 0.00 / yr | $0 | |
| 37 | Keweenaw County | Very Low | 0.00 / yr | $0 | |
| 38 | Schoolcraft County | Very Low | 0.00 / yr | $0 | |
| 39 | Houghton County | Very Low | 0.00 / yr | $0 | |
| 40 | Gogebic County | Very Low | 0.01 / yr | $0 | |
| 41 | Luce County | Very Low | 0.01 / yr | $0 |
41 Michigan counties with measurable coastal flood risk. See the national coastal flood ranking or all Michigan counties by overall risk.
Frequently Asked Questions
Which Michigan county has the highest coastal flood risk?
Wayne County has the highest FEMA coastal flood risk score in Michigan at 49.6 (Low), with $90K in expected annual losses and about 0.01 events per year.
How many Michigan counties face significant coastal flood risk?
41 Michigan counties record measurable coastal flood risk in FEMA's National Risk Index; 0 of them are rated High or Very High.