Riverine Flood Risk in Tennessee

All Tennessee 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 95 of 95 Tennessee counties in FEMA's National Risk Index. Shelby County carries the state's highest riverine flood score at 98.7, with $154M in expected annual riverine flood losses.

4 Tennessee counties are rated High or Very High for riverine flood, and expected annual losses from riverine flood total roughly $1.18B 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 Shelby County
98.7
High 5.18 / yr $154M
2 Davidson County
98.2
High 3.79 / yr $160M
3 Hamilton County
94.9
High 1.93 / yr $75M
4 Rutherford County
93.4
High 2.18 / yr $71M
5 Knox County
92.8
Medium 2.18 / yr $61M
6 Sumner County
88.6
Medium 2.14 / yr $42M
7 Williamson County
88.2
Medium 2.18 / yr $57M
8 Montgomery County
84.5
Medium 1.57 / yr $29M
9 Sevier County
84.1
Medium 1.46 / yr $21M
10 Wilson County
82.1
Medium 2.61 / yr $31M
11 Sullivan County
81.6
Medium 1.25 / yr $20M
12 Anderson County
77.7
Medium 1.14 / yr $16M
13 Carter County
77.4
Medium 0.96 / yr $12M
14 Maury County
74.6
Medium 2.04 / yr $18M
15 Blount County
74.0
Medium 1.00 / yr $17M
16 Madison County
72.6
Low 2.46 / yr $11M
17 Loudon County
71.6
Low 0.75 / yr $11M
18 Washington County
71.1
Low 1.14 / yr $14M
19 Bedford County
70.2
Low 1.46 / yr $12M
20 Roane County
69.9
Low 1.25 / yr $10M
21 Bradley County
69.1
Low 1.00 / yr $14M
22 Cocke County
68.5
Low 0.71 / yr $8M
23 Campbell County
65.7
Low 0.93 / yr $8M
24 Monroe County
65.1
Low 1.11 / yr $8M
25 Hawkins County
64.7
Low 0.93 / yr $8M
26 Greene County
63.5
Low 1.29 / yr $7M
27 Rhea County
62.7
Low 1.14 / yr $8M
28 McMinn County
62.6
Low 1.39 / yr $8M
29 Marion County
61.4
Low 0.82 / yr $8M
30 Giles County
60.8
Low 1.36 / yr $7M
31 Putnam County
60.2
Low 2.14 / yr $9M
32 Cumberland County
58.4
Low 1.43 / yr $6M
33 Franklin County
58.3
Low 1.29 / yr $9M
34 Warren County
57.0
Low 0.82 / yr $6M
35 Lincoln County
57.0
Low 1.46 / yr $6M
36 Lawrence County
56.9
Low 3.29 / yr $6M
37 Jefferson County
56.8
Low 0.50 / yr $7M
38 Coffee County
56.0
Low 1.29 / yr $8M
39 Hamblen County
54.6
Low 0.61 / yr $6M
40 Cheatham County
54.5
Low 1.29 / yr $9M
41 Hardin County
54.4
Low 1.14 / yr $5M
42 Tipton County
53.9
Low 1.75 / yr $6M
43 Robertson County
53.1
Low 0.86 / yr $8M
44 Gibson County
52.9
Low 1.61 / yr $6M
45 Claiborne County
51.7
Low 0.82 / yr $5M
46 Fayette County
51.6
Low 1.07 / yr $6M
47 Marshall County
49.7
Low 1.36 / yr $9M
48 Wayne County
47.7
Low 1.32 / yr $4M
49 Johnson County
47.2
Low 0.75 / yr $4M
50 Perry County
47.1
Low 0.89 / yr $4M
51 Hickman County
46.8
Low 1.00 / yr $5M
52 Humphreys County
46.0
Low 0.68 / yr $5M
53 Dickson County
44.6
Low 1.50 / yr $6M
54 White County
42.7
Low 0.96 / yr $4M
55 Polk County
42.6
Low 0.43 / yr $4M
56 Cannon County
39.5
Low 1.00 / yr $4M
57 Henry County
38.8
Low 0.75 / yr $3M
58 Obion County
38.1
Low 1.29 / yr $4M
59 Dyer County
37.8
Low 0.96 / yr $3M
60 Jackson County
37.0
Low 0.82 / yr $3M
61 Sequatchie County
35.1
Low 0.75 / yr $4M
62 DeKalb County
34.5
Very Low 0.71 / yr $4M
63 Grainger County
33.6
Very Low 0.54 / yr $3M
64 Decatur County
33.5
Very Low 1.50 / yr $3M
65 McNairy County
33.3
Very Low 0.86 / yr $3M
66 Henderson County
32.8
Very Low 1.00 / yr $3M
67 Hancock County
32.7
Very Low 0.43 / yr $2M
68 Smith County
31.6
Very Low 1.07 / yr $5M
69 Macon County
31.2
Very Low 1.14 / yr $3M
70 Hardeman County
30.3
Very Low 0.86 / yr $2M
71 Grundy County
29.4
Very Low 0.71 / yr $2M
72 Scott County
29.2
Very Low 1.04 / yr $3M
73 Bledsoe County
27.9
Very Low 1.39 / yr $2M
74 Clay County
27.7
Very Low 0.82 / yr $2M
75 Overton County
27.4
Very Low 1.07 / yr $3M
76 Unicoi County
27.4
Very Low 0.68 / yr $3M
77 Carroll County
27.2
Very Low 1.18 / yr $2M
78 Union County
26.0
Very Low 0.61 / yr $3M
79 Morgan County
25.7
Very Low 1.14 / yr $3M
80 Lauderdale County
25.2
Very Low 0.79 / yr $2M
81 Haywood County
24.9
Very Low 1.00 / yr $2M
82 Stewart County
22.8
Very Low 1.21 / yr $2M
83 Weakley County
21.9
Very Low 0.96 / yr $3M
84 Chester County
21.8
Very Low 0.79 / yr $2M
85 Fentress County
21.3
Very Low 1.29 / yr $2M
86 Meigs County
21.3
Very Low 0.75 / yr $2M
87 Benton County
20.2
Very Low 1.32 / yr $2M
88 Moore County
19.2
Very Low 0.75 / yr $2M
89 Crockett County
14.1
Very Low 1.18 / yr $1M
90 Houston County
14.0
Very Low 0.71 / yr $2M
91 Trousdale County
13.4
Very Low 0.61 / yr $2M
92 Lewis County
13.3
Very Low 0.75 / yr $2M
93 Pickett County
9.2
Very Low 0.29 / yr $899K
94 Lake County
8.8
Very Low 0.54 / yr $751K
95 Van Buren County
7.5
Very Low 0.57 / yr $1M

95 Tennessee counties with measurable riverine flood risk. See the national riverine flood ranking or all Tennessee counties by overall risk.

Frequently Asked Questions

Which Tennessee county has the highest riverine flood risk?

Shelby County has the highest FEMA riverine flood risk score in Tennessee at 98.7 (High), with $154M in expected annual losses and about 5.18 events per year.

How many Tennessee counties face significant riverine flood risk?

95 Tennessee counties record measurable riverine flood risk in FEMA's National Risk Index; 4 of them are rated High or Very High.

Other Hazards in Tennessee

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