Coastal Flood Risk in Ohio
All Ohio 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 9 of 88 Ohio counties in FEMA's National Risk Index. Ottawa County carries the state's highest coastal flood score at 49.0, with $88K in expected annual coastal flood losses.
No Ohio county reaches the High band for coastal flood, and expected annual losses from coastal flood total roughly $214K 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 | Ottawa County | Low | 0.02 / yr | $88K | |
| 2 | Erie County | Low | 0.01 / yr | $61K | |
| 3 | Lucas County | Very Low | 0.01 / yr | $28K | |
| 4 | Lake County | Very Low | 0.02 / yr | $15K | |
| 5 | Cuyahoga County | Very Low | 0.01 / yr | $6K | |
| 6 | Sandusky County | Very Low | 0.02 / yr | $6K | |
| 7 | Lorain County | Very Low | 0.02 / yr | $6K | |
| 8 | Ashtabula County | Very Low | 0.01 / yr | $3K | |
| 9 | Wood County | Very Low | 0.01 / yr | $0 |
9 Ohio counties with measurable coastal flood risk. See the national coastal flood ranking or all Ohio counties by overall risk.
Frequently Asked Questions
Which Ohio county has the highest coastal flood risk?
Ottawa County has the highest FEMA coastal flood risk score in Ohio at 49.0 (Low), with $88K in expected annual losses and about 0.02 events per year.
How many Ohio counties face significant coastal flood risk?
9 Ohio counties record measurable coastal flood risk in FEMA's National Risk Index; 0 of them are rated High or Very High.