Alabama coastal flooding risk
Mobile County has the highest coastal flooding risk in Alabama, scoring 90.6 out of 100 — rated "Relatively High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | Mobile County | 90.6 | Relatively High |
| 2 | Baldwin County | 85.8 | Relatively High |
| 3 | Clarke County | 22.2 | Very Low |
| 4 | Washington County | 21.6 | Very Low |
| 5 | Monroe County | 18 | Very Low |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Coastal Flooding risk nationally:
Other hazard risks in Alabama:
Frequently asked questions
What is the highest coastal flooding risk county in Alabama?
Mobile County, AL has the highest coastal flooding risk in Alabama, with a FEMA National Risk Index score of 90.6 out of 100 (rated "Relatively High").
What causes coastal flooding risk in Alabama?
Coastal flooding scores cover storm surge, wave action, and tidal flooding along the Gulf, Atlantic, and Pacific coasts, and Great Lakes shoreline. Inland flooding is scored separately. Counties with "Not Applicable" ratings have no significant coastal exposure. Coastal flood events are reported at zone level in NOAA Storm Events and are not included in county-level counts.