Alabama inland flooding risk
Jefferson County has the highest inland flooding risk in Alabama, scoring 98.1 out of 100 — rated "Relatively High" by FEMA's National Risk Index. NOAA has recorded 1,186 inland flooding events across Alabama over the past decade.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Jefferson County | 98.1 | Relatively High | 56 |
| 2 | Madison County | 95.9 | Relatively High | 107 |
| 3 | Mobile County | 95.9 | Relatively High | 89 |
| 4 | Montgomery County | 94.1 | Relatively High | 14 |
| 5 | Baldwin County | 92.2 | Relatively Moderate | 61 |
| 6 | Shelby County | 91.6 | Relatively Moderate | 26 |
| 7 | Tuscaloosa County | 91.6 | Relatively Moderate | 17 |
| 8 | Calhoun County | 89.5 | Relatively Moderate | 10 |
| 9 | Etowah County | 87.5 | Relatively Moderate | 8 |
| 10 | Houston County | 87.2 | Relatively Moderate | 49 |
| 11 | Talladega County | 87.2 | Relatively Moderate | 6 |
| 12 | Morgan County | 86.7 | Relatively Moderate | 71 |
| 13 | Walker County | 85.8 | Relatively Moderate | 6 |
| 14 | Marshall County | 85.3 | Relatively Moderate | 29 |
| 15 | Lee County | 84.7 | Relatively Moderate | 9 |
| 16 | Coffee County | 84.4 | Relatively Moderate | 25 |
| 17 | Lauderdale County | 84.2 | Relatively Moderate | 83 |
| 18 | DeKalb County | 81.7 | Relatively Moderate | 39 |
| 19 | Elmore County | 80.6 | Relatively Moderate | 14 |
| 20 | Cullman County | 80.2 | Relatively Moderate | 33 |
| 21 | Jackson County | 78.7 | Relatively Moderate | 51 |
| 22 | Tallapoosa County | 77.9 | Relatively Moderate | 2 |
| 23 | Limestone County | 76.7 | Relatively Moderate | 23 |
| 24 | Colbert County | 76.5 | Relatively Moderate | 72 |
| 25 | St. Clair County | 75.9 | Relatively Moderate | 9 |
| 26 | Dallas County | 75.2 | Relatively Moderate | 3 |
| 27 | Choctaw County | 73.5 | Relatively Moderate | 15 |
| 28 | Cherokee County | 70.4 | Relatively Low | 17 |
| 29 | Blount County | 69.5 | Relatively Low | 10 |
| 30 | Covington County | 69 | Relatively Low | 5 |
| 31 | Escambia County | 67.3 | Relatively Low | 15 |
| 32 | Russell County | 66.9 | Relatively Low | 11 |
| 33 | Autauga County | 65.5 | Relatively Low | 5 |
| 34 | Winston County | 64.7 | Relatively Low | 2 |
| 35 | Marion County | 64 | Relatively Low | 6 |
| 36 | Lawrence County | 63.7 | Relatively Low | 18 |
| 37 | Dale County | 61 | Relatively Low | 12 |
| 38 | Chilton County | 60.2 | Relatively Low | 5 |
| 39 | Chambers County | 57.5 | Relatively Low | 6 |
| 40 | Geneva County | 55.4 | Relatively Low | 30 |
| 41 | Sumter County | 54.8 | Relatively Low | 3 |
| 42 | Franklin County | 54.7 | Relatively Low | 14 |
| 43 | Wilcox County | 53.1 | Relatively Low | 4 |
| 44 | Barbour County | 50.8 | Relatively Low | 2 |
| 45 | Marengo County | 50.6 | Relatively Low | 0 |
| 46 | Bibb County | 48.9 | Relatively Low | 0 |
| 47 | Pike County | 47.6 | Relatively Low | 2 |
| 48 | Monroe County | 42 | Relatively Low | 9 |
| 49 | Randolph County | 42 | Relatively Low | 3 |
| 50 | Pickens County | 41.9 | Relatively Low | 0 |
| 51 | Hale County | 41.8 | Relatively Low | 0 |
| 52 | Fayette County | 41.1 | Relatively Low | 4 |
| 53 | Clarke County | 40.4 | Relatively Low | 25 |
| 54 | Henry County | 38.4 | Relatively Low | 11 |
| 55 | Washington County | 38.4 | Relatively Low | 8 |
| 56 | Cleburne County | 37.2 | Relatively Low | 2 |
| 57 | Butler County | 36.1 | Relatively Low | 4 |
| 58 | Clay County | 35.3 | Relatively Low | 3 |
| 59 | Macon County | 34.8 | Very Low | 5 |
| 60 | Coosa County | 34.3 | Very Low | 1 |
| 61 | Crenshaw County | 33.6 | Very Low | 4 |
| 62 | Greene County | 32.8 | Very Low | 2 |
| 63 | Lowndes County | 31.9 | Very Low | 4 |
| 64 | Lamar County | 31.6 | Very Low | 5 |
| 65 | Conecuh County | 23.5 | Very Low | 2 |
| 66 | Perry County | 22.5 | Very Low | 3 |
| 67 | Bullock County | 20.2 | Very Low | 2 |
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.
Inland Flooding risk nationally:
Other hazard risks in Alabama:
Frequently asked questions
What is the highest inland flooding risk county in Alabama?
Jefferson County, AL has the highest inland flooding risk in Alabama, with a FEMA National Risk Index score of 98.1 out of 100 (rated "Relatively High").
What causes inland flooding risk in Alabama?
Inland flooding covers riverine and surface (pluvial) flooding — the most common and costly natural disaster type in the US. High scores appear across river floodplains in the Midwest, South, and Mid-Atlantic, where legacy development in flood-prone areas and aging stormwater infrastructure concentrate risk.