Coastal Flood Risk in Maine
All Maine 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 10 of 16 Maine counties in FEMA's National Risk Index. York County carries the state's highest coastal flood score at 86.6, with $5M in expected annual coastal flood losses.
1 Maine county is rated High or Very High for coastal flood, and expected annual losses from coastal flood total roughly $17M 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 | York County | High | 8.08 / yr | $5M | |
| 2 | Cumberland County | Medium | 8.19 / yr | $4M | |
| 3 | Hancock County | Medium | 10.56 / yr | $2M | |
| 4 | Sagadahoc County | Medium | 8.59 / yr | $2M | |
| 5 | Washington County | Medium | 11.31 / yr | $1M | |
| 6 | Lincoln County | Medium | 8.48 / yr | $1M | |
| 7 | Knox County | Medium | 8.38 / yr | $1M | |
| 8 | Waldo County | Low | 10.59 / yr | $435K | |
| 9 | Kennebec County | Low | 10.59 / yr | $319K | |
| 10 | Penobscot County | Very Low | 10.59 / yr | $22K |
10 Maine counties with measurable coastal flood risk. See the national coastal flood ranking or all Maine counties by overall risk.
Frequently Asked Questions
Which Maine county has the highest coastal flood risk?
York County has the highest FEMA coastal flood risk score in Maine at 86.6 (High), with $5M in expected annual losses and about 8.08 events per year.
How many Maine counties face significant coastal flood risk?
10 Maine counties record measurable coastal flood risk in FEMA's National Risk Index; 1 of them are rated High or Very High.