Landslide Risk by State & County

Ranked by FEMA National Risk Index landslide hazard score · code LNDS

Landslide risk reflects downhill movement of rock, soil, and debris on unstable slopes. FEMA's National Risk Index scores each county's landslide hazard from its expected annual loss, annualized event frequency, and exposed population. Santa Barbara County, California currently leads the nation with a landslide score of 100.0 and $51M in expected annual loss. California, Washington, Alaska account for much of the highest-rated landslide risk in this dataset.

Read the full landslide risk guide — how FEMA scores it and how to prepare →

Landslide Risk by State

#StateExpected Ann. LossAvg. ScoreRatingCounties Rated
1California$130M
89.0
Very High 58 of 58
2Washington$40M
84.1
Very High 39 of 39
3Alaska$12M
84.8
Very High 30 of 30
4Colorado$11M
62.3
High 64 of 64
5North Carolina$9M
47.7
Medium 100 of 100
6Tennessee$5M
67.4
High 95 of 95
7Hawaii$4M
67.2
High 5 of 5
8Idaho$4M
64.6
High 44 of 44
9Montana$3M
57.5
Medium 56 of 56
10Utah$3M
79.1
High 29 of 29
11West Virginia$3M
87.4
Very High 55 of 55
12Oregon$2M
79.4
High 36 of 36
13Wisconsin$2M
49.5
Medium 72 of 72
14Kentucky$2M
53.0
Medium 120 of 120
15Missouri$2M
65.2
High 115 of 115
16Wyoming$2M
74.6
High 23 of 23
17Pennsylvania$2M
76.1
High 67 of 67
18Virginia$2M
45.7
Medium 133 of 133
19Minnesota$1M
48.2
Medium 87 of 87
20New York$1M
63.0
High 62 of 62
21Mississippi$1M
52.6
Medium 82 of 82
22Ohio$1M
56.4
Medium 88 of 88
23Illinois$832K
57.6
Medium 102 of 102
24Iowa$807K
54.5
Medium 99 of 99
25Georgia$768K
30.0
Low 159 of 159
26New Hampshire$695K
78.7
High 10 of 10
27Vermont$615K
73.7
High 14 of 14
28Alabama$566K
60.6
High 67 of 67
29Indiana$560K
50.5
Medium 92 of 92
30Arizona$475K
68.4
High 15 of 15
31Arkansas$433K
51.0
Medium 75 of 75
32New Mexico$417K
48.0
Medium 33 of 33
33Oklahoma$278K
50.5
Medium 77 of 77
34Michigan$263K
51.3
Medium 83 of 83
35Maryland$230K
50.2
Medium 24 of 24
36Connecticut$204K
74.8
High 9 of 9
37Texas$197K
23.1
Low 254 of 254
38Massachusetts$191K
58.0
Medium 14 of 14
39Nevada$162K
56.3
Medium 17 of 17
40Kansas$162K
26.5
Low 105 of 105
41South Carolina$148K
40.2
Medium 46 of 46
42Maine$141K
68.0
High 16 of 16
43Nebraska$118K
23.7
Low 93 of 93
44New Jersey$117K
48.8
Medium 21 of 21
45South Dakota$66K
27.5
Low 66 of 66
46Florida$54K
30.4
Low 67 of 67
47North Dakota$43K
27.1
Low 53 of 53
48Louisiana$27K
27.6
Low 64 of 64
49District of Columbia$17K
80.9
Very High 1 of 1
50Delaware$13K
52.5
Medium 3 of 3
51Rhode Island$10K
33.5
Low 5 of 5

States ranked by total expected annual landslide losses; the average score is the mean over all counties, counting unrated counties as zero.

Riskiest Counties for Landslide

#CountyStateLandslide ScoreRatingAnn. Freq.Ann. Loss
1Santa Barbara CountyCA
100.0
Very High 60.37 / yr$51M
2Snohomish CountyWA
100.0
Very High 4.12 / yr$25M
3San Bernardino CountyCA
99.9
Very High 27.53 / yr$18M
4Monterey CountyCA
99.9
High 129.63 / yr$5M
5Island CountyWA
99.9
High 0.40 / yr$6M
6Alameda CountyCA
99.8
High 24.63 / yr$6M
7Sonoma CountyCA
99.8
High 67.44 / yr$5M
8Macon CountyNC
99.8
High 1.92 / yr$3M
9Orange CountyCA
99.7
High 17.84 / yr$4M
10Santa Clara CountyCA
99.7
High 64.63 / yr$5M
11San Mateo CountyCA
99.7
High 3.94 / yr$4M
12Petersburg BoroughAK
99.7
High 5.74 / yr$3M
13Honolulu CountyHI
99.6
High 0.32 / yr$4M
14Humboldt CountyCA
99.6
High 83.33 / yr$2M
15Mendocino CountyCA
99.6
High 94.88 / yr$2M
16San Diego CountyCA
99.5
High 177.45 / yr$3M
17Mariposa CountyCA
99.5
High 27.38 / yr$2M
18Hawkins CountyTN
99.5
High 1.47 / yr$2M
19San Luis Obispo CountyCA
99.4
High 128.71 / yr$2M
20Fairbanks North Star BoroughAK
99.4
High 11.13 / yr$3M
21Mesa CountyCO
99.4
High 2.96 / yr$2M
22Los Angeles CountyCA
99.3
High 78.63 / yr$2M
23Contra Costa CountyCA
99.3
High 19.83 / yr$2M
24Santa Cruz CountyCA
99.3
High 6.50 / yr$2M
25Marin CountyCA
99.2
High 12.05 / yr$2M

Showing the top 25 seeded counties for landslide risk.