Riverine Flood Risk in Alabama
All Alabama counties ranked by FEMA National Risk Index riverine flood score
Riverine Flood risk — rivers and streams overflowing their banks after heavy rain or snowmelt — is rated for 67 of 67 Alabama counties in FEMA's National Risk Index. Jefferson County carries the state's highest riverine flood score at 98.1, with $143M in expected annual riverine flood losses.
4 Alabama counties are rated High or Very High for riverine flood, and expected annual losses from riverine flood total roughly $1.08B statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Riverine Flood
| # | County | Riverine Flood Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Jefferson County | High | 4.18 / yr | $143M | |
| 2 | Mobile County | High | 3.68 / yr | $81M | |
| 3 | Madison County | High | 3.68 / yr | $99M | |
| 4 | Montgomery County | High | 1.36 / yr | $51M | |
| 5 | Baldwin County | Medium | 2.96 / yr | $48M | |
| 6 | Tuscaloosa County | Medium | 2.07 / yr | $41M | |
| 7 | Shelby County | Medium | 1.86 / yr | $56M | |
| 8 | Calhoun County | Medium | 1.04 / yr | $27M | |
| 9 | Etowah County | Medium | 0.96 / yr | $23M | |
| 10 | Houston County | Medium | 0.93 / yr | $23M | |
| 11 | Talladega County | Medium | 0.96 / yr | $20M | |
| 12 | Morgan County | Medium | 2.39 / yr | $24M | |
| 13 | Walker County | Medium | 1.11 / yr | $19M | |
| 14 | Marshall County | Medium | 1.79 / yr | $20M | |
| 15 | Lee County | Medium | 0.82 / yr | $25M | |
| 16 | Coffee County | Medium | 0.64 / yr | $21M | |
| 17 | Lauderdale County | Medium | 3.36 / yr | $23M | |
| 18 | DeKalb County | Medium | 1.71 / yr | $16M | |
| 19 | Elmore County | Medium | 1.46 / yr | $19M | |
| 20 | Cullman County | Medium | 1.86 / yr | $15M | |
| 21 | Jackson County | Medium | 1.54 / yr | $13M | |
| 22 | Tallapoosa County | Medium | 0.61 / yr | $13M | |
| 23 | Limestone County | Medium | 2.07 / yr | $20M | |
| 24 | Colbert County | Medium | 2.86 / yr | $14M | |
| 25 | St. Clair County | Medium | 1.04 / yr | $18M | |
| 26 | Dallas County | Medium | 0.50 / yr | $10M | |
| 27 | Choctaw County | Medium | 1.32 / yr | $11M | |
| 28 | Cherokee County | Low | 0.93 / yr | $9M | |
| 29 | Blount County | Low | 1.29 / yr | $10M | |
| 30 | Covington County | Low | 0.61 / yr | $9M | |
| 31 | Escambia County | Low | 1.11 / yr | $8M | |
| 32 | Russell County | Low | 0.71 / yr | $9M | |
| 33 | Autauga County | Low | 0.93 / yr | $11M | |
| 34 | Winston County | Low | 0.57 / yr | $6M | |
| 35 | Marion County | Low | 0.86 / yr | $6M | |
| 36 | Lawrence County | Low | 1.50 / yr | $7M | |
| 37 | Dale County | Low | 0.61 / yr | $6M | |
| 38 | Chilton County | Low | 0.50 / yr | $8M | |
| 39 | Chambers County | Low | 0.79 / yr | $6M | |
| 40 | Geneva County | Low | 0.93 / yr | $5M | |
| 41 | Sumter County | Low | 0.75 / yr | $4M | |
| 42 | Franklin County | Low | 1.11 / yr | $5M | |
| 43 | Wilcox County | Low | 0.39 / yr | $4M | |
| 44 | Barbour County | Low | 0.25 / yr | $4M | |
| 45 | Marengo County | Low | 0.46 / yr | $4M | |
| 46 | Bibb County | Low | 0.57 / yr | $5M | |
| 47 | Pike County | Low | 0.46 / yr | $5M | |
| 48 | Monroe County | Low | 0.79 / yr | $3M | |
| 49 | Randolph County | Low | 0.82 / yr | $4M | |
| 50 | Pickens County | Low | 0.50 / yr | $3M | |
| 51 | Hale County | Low | 0.57 / yr | $3M | |
| 52 | Fayette County | Low | 0.43 / yr | $4M | |
| 53 | Clarke County | Low | 1.21 / yr | $4M | |
| 54 | Washington County | Low | 0.79 / yr | $3M | |
| 55 | Henry County | Low | 0.36 / yr | $3M | |
| 56 | Cleburne County | Low | 0.32 / yr | $3M | |
| 57 | Butler County | Low | 0.50 / yr | $3M | |
| 58 | Clay County | Low | 0.68 / yr | $3M | |
| 59 | Macon County | Very Low | 0.46 / yr | $3M | |
| 60 | Coosa County | Very Low | 0.14 / yr | $3M | |
| 61 | Crenshaw County | Very Low | 0.57 / yr | $3M | |
| 62 | Greene County | Very Low | 0.43 / yr | $2M | |
| 63 | Lowndes County | Very Low | 0.64 / yr | $2M | |
| 64 | Lamar County | Very Low | 1.75 / yr | $3M | |
| 65 | Conecuh County | Very Low | 0.46 / yr | $2M | |
| 66 | Perry County | Very Low | 0.32 / yr | $2M | |
| 67 | Bullock County | Very Low | 0.36 / yr | $1M |
67 Alabama counties with measurable riverine flood risk. See the national riverine flood ranking or all Alabama counties by overall risk.
Frequently Asked Questions
Which Alabama county has the highest riverine flood risk?
Jefferson County has the highest FEMA riverine flood risk score in Alabama at 98.1 (High), with $143M in expected annual losses and about 4.18 events per year.
How many Alabama counties face significant riverine flood risk?
67 Alabama counties record measurable riverine flood risk in FEMA's National Risk Index; 4 of them are rated High or Very High.