Landslide Risk in Colorado
All Colorado counties ranked by FEMA National Risk Index landslide score
Landslide risk — downhill movement of rock, soil, and debris on unstable slopes — is rated for 64 of 64 Colorado counties in FEMA's National Risk Index. Mesa County carries the state's highest landslide score at 99.4, with $2M in expected annual landslide losses.
5 Colorado counties are rated High or Very High for landslide, and expected annual losses from landslide total roughly $11M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Landslide
| # | County | Landslide Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Mesa County | High | 2.96 / yr | $2M | |
| 2 | Garfield County | High | 3.91 / yr | $2M | |
| 3 | Pitkin County | High | 0.75 / yr | $1M | |
| 4 | Ouray County | High | 0.26 / yr | $1M | |
| 5 | Dolores County | High | 0.37 / yr | $489K | |
| 6 | Jefferson County | Medium | 0.41 / yr | $559K | |
| 7 | Chaffee County | Medium | 0.59 / yr | $489K | |
| 8 | Gunnison County | Medium | 2.10 / yr | $590K | |
| 9 | Larimer County | Medium | 1.14 / yr | $491K | |
| 10 | Saguache County | Medium | 0.91 / yr | $163K | |
| 11 | Eagle County | Medium | 1.32 / yr | $209K | |
| 12 | Lake County | Medium | 0.23 / yr | $162K | |
| 13 | Park County | Medium | 0.80 / yr | $161K | |
| 14 | Delta County | Medium | 0.79 / yr | $93K | |
| 15 | Rio Blanco County | Medium | 3.95 / yr | $94K | |
| 16 | Fremont County | Medium | 0.77 / yr | $80K | |
| 17 | Summit County | Medium | 0.49 / yr | $137K | |
| 18 | Grand County | Medium | 1.22 / yr | $122K | |
| 19 | Montezuma County | Medium | 1.01 / yr | $74K | |
| 20 | Rio Grande County | Medium | 0.23 / yr | $55K | |
| 21 | Moffat County | Medium | 3.34 / yr | $102K | |
| 22 | Teller County | Medium | 0.37 / yr | $107K | |
| 23 | Archuleta County | Medium | 0.79 / yr | $47K | |
| 24 | Boulder County | Medium | 0.27 / yr | $78K | |
| 25 | Routt County | Medium | 1.43 / yr | $86K | |
| 26 | Clear Creek County | Medium | 0.35 / yr | $64K | |
| 27 | La Plata County | Medium | 0.72 / yr | $51K | |
| 28 | Denver County | Medium | 0.03 / yr | $49K | |
| 29 | San Miguel County | Low | 0.77 / yr | $51K | |
| 30 | Gilpin County | Low | 0.13 / yr | $40K | |
| 31 | Montrose County | Low | 1.44 / yr | $21K | |
| 32 | Hinsdale County | Low | 0.73 / yr | $28K | |
| 33 | Custer County | Low | 0.27 / yr | $29K | |
| 34 | Costilla County | Low | 0.40 / yr | $7K | |
| 35 | Douglas County | Low | 0.86 / yr | $20K | |
| 36 | Mineral County | Low | 0.55 / yr | $19K | |
| 37 | Las Animas County | Low | 1.77 / yr | $5K | |
| 38 | Conejos County | Low | 0.38 / yr | $3K | |
| 39 | Jackson County | Low | 0.47 / yr | $4K | |
| 40 | San Juan County | Low | 0.33 / yr | $5K | |
| 41 | Arapahoe County | Very Low | 0.15 / yr | $2K | |
| 42 | Pueblo County | Very Low | 0.50 / yr | $1K | |
| 43 | El Paso County | Very Low | 0.50 / yr | $1K | |
| 44 | Huerfano County | Very Low | 0.35 / yr | $494 | |
| 45 | Weld County | Very Low | 0.54 / yr | $960 | |
| 46 | Adams County | Very Low | 0.16 / yr | $761 | |
| 47 | Alamosa County | Very Low | 0.08 / yr | $363 | |
| 48 | Elbert County | Very Low | 0.45 / yr | $523 | |
| 49 | Yuma County | Very Low | 0.41 / yr | $205 | |
| 50 | Logan County | Very Low | 0.24 / yr | $45 | |
| 51 | Morgan County | Very Low | 0.18 / yr | $30 | |
| 52 | Otero County | Very Low | 0.18 / yr | $16 | |
| 53 | Broomfield County | Very Low | 0.01 / yr | $17 | |
| 54 | Baca County | Very Low | 0.30 / yr | $5 | |
| 55 | Kit Carson County | Very Low | 0.24 / yr | $7 | |
| 56 | Lincoln County | Very Low | 0.29 / yr | $7 | |
| 57 | Prowers County | Very Low | 0.17 / yr | $3 | |
| 58 | Washington County | Very Low | 0.28 / yr | $3 | |
| 59 | Bent County | Very Low | 0.20 / yr | $5 | |
| 60 | Cheyenne County | Very Low | 0.18 / yr | $2 | |
| 61 | Sedgwick County | Very Low | 0.07 / yr | $1 | |
| 62 | Kiowa County | Very Low | 0.17 / yr | $1 | |
| 63 | Phillips County | Very Low | 0.07 / yr | $1 | |
| 64 | Crowley County | Very Low | 0.08 / yr | $0 |
64 Colorado counties with measurable landslide risk. See the national landslide ranking or all Colorado counties by overall risk.
Frequently Asked Questions
Which Colorado county has the highest landslide risk?
Mesa County has the highest FEMA landslide risk score in Colorado at 99.4 (High), with $2M in expected annual losses and about 2.96 events per year.
How many Colorado counties face significant landslide risk?
64 Colorado counties record measurable landslide risk in FEMA's National Risk Index; 5 of them are rated High or Very High.