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

#CountyRiverine Flood ScoreRatingAnn. Freq.Ann. Loss
1 Jefferson County
98.1
High 4.18 / yr $143M
2 Mobile County
95.9
High 3.68 / yr $81M
3 Madison County
95.9
High 3.68 / yr $99M
4 Montgomery County
94.1
High 1.36 / yr $51M
5 Baldwin County
92.2
Medium 2.96 / yr $48M
6 Tuscaloosa County
91.6
Medium 2.07 / yr $41M
7 Shelby County
91.6
Medium 1.86 / yr $56M
8 Calhoun County
89.5
Medium 1.04 / yr $27M
9 Etowah County
87.5
Medium 0.96 / yr $23M
10 Houston County
87.2
Medium 0.93 / yr $23M
11 Talladega County
87.2
Medium 0.96 / yr $20M
12 Morgan County
86.7
Medium 2.39 / yr $24M
13 Walker County
85.8
Medium 1.11 / yr $19M
14 Marshall County
85.3
Medium 1.79 / yr $20M
15 Lee County
84.7
Medium 0.82 / yr $25M
16 Coffee County
84.4
Medium 0.64 / yr $21M
17 Lauderdale County
84.2
Medium 3.36 / yr $23M
18 DeKalb County
81.7
Medium 1.71 / yr $16M
19 Elmore County
80.6
Medium 1.46 / yr $19M
20 Cullman County
80.2
Medium 1.86 / yr $15M
21 Jackson County
78.7
Medium 1.54 / yr $13M
22 Tallapoosa County
77.9
Medium 0.61 / yr $13M
23 Limestone County
76.7
Medium 2.07 / yr $20M
24 Colbert County
76.5
Medium 2.86 / yr $14M
25 St. Clair County
75.9
Medium 1.04 / yr $18M
26 Dallas County
75.2
Medium 0.50 / yr $10M
27 Choctaw County
73.5
Medium 1.32 / yr $11M
28 Cherokee County
70.4
Low 0.93 / yr $9M
29 Blount County
69.5
Low 1.29 / yr $10M
30 Covington County
69.0
Low 0.61 / yr $9M
31 Escambia County
67.3
Low 1.11 / yr $8M
32 Russell County
66.9
Low 0.71 / yr $9M
33 Autauga County
65.5
Low 0.93 / yr $11M
34 Winston County
64.7
Low 0.57 / yr $6M
35 Marion County
64.0
Low 0.86 / yr $6M
36 Lawrence County
63.7
Low 1.50 / yr $7M
37 Dale County
61.0
Low 0.61 / yr $6M
38 Chilton County
60.2
Low 0.50 / yr $8M
39 Chambers County
57.5
Low 0.79 / yr $6M
40 Geneva County
55.4
Low 0.93 / yr $5M
41 Sumter County
54.8
Low 0.75 / yr $4M
42 Franklin County
54.7
Low 1.11 / yr $5M
43 Wilcox County
53.1
Low 0.39 / yr $4M
44 Barbour County
50.8
Low 0.25 / yr $4M
45 Marengo County
50.6
Low 0.46 / yr $4M
46 Bibb County
48.9
Low 0.57 / yr $5M
47 Pike County
47.6
Low 0.46 / yr $5M
48 Monroe County
42.0
Low 0.79 / yr $3M
49 Randolph County
42.0
Low 0.82 / yr $4M
50 Pickens County
41.9
Low 0.50 / yr $3M
51 Hale County
41.8
Low 0.57 / yr $3M
52 Fayette County
41.1
Low 0.43 / yr $4M
53 Clarke County
40.4
Low 1.21 / yr $4M
54 Washington County
38.4
Low 0.79 / yr $3M
55 Henry County
38.4
Low 0.36 / yr $3M
56 Cleburne County
37.2
Low 0.32 / yr $3M
57 Butler County
36.1
Low 0.50 / yr $3M
58 Clay County
35.3
Low 0.68 / yr $3M
59 Macon County
34.8
Very Low 0.46 / yr $3M
60 Coosa County
34.3
Very Low 0.14 / yr $3M
61 Crenshaw County
33.6
Very Low 0.57 / yr $3M
62 Greene County
32.8
Very Low 0.43 / yr $2M
63 Lowndes County
31.9
Very Low 0.64 / yr $2M
64 Lamar County
31.6
Very Low 1.75 / yr $3M
65 Conecuh County
23.5
Very Low 0.46 / yr $2M
66 Perry County
22.5
Very Low 0.32 / yr $2M
67 Bullock County
20.2
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.

Other Hazards in Alabama