Natural Hazard Risk in South Dakota
The risk score (0–100) combines expected annual loss from 18 natural hazards with social vulnerability and community resilience. Higher = greater relative risk. Scores compare counties across the United States.
See what's happening right now on the live map →| County | Risk score | Rating | Expected annual loss | Population |
|---|---|---|---|---|
| Minnehaha | 89.5 | Relatively Moderate | $103.7M | 196,891 |
| Dewey | 78.7 | Relatively Low | $22.1M | 5,228 |
| Pennington | 78.6 | Relatively Low | $40.8M | 109,015 |
| Brown | 73.5 | Relatively Low | $36.6M | 38,265 |
| Yankton | 63.4 | Relatively Low | $19.4M | 23,308 |
| Lincoln | 63 | Relatively Low | $41.7M | 65,123 |
| Codington | 61.8 | Relatively Low | $24.9M | 28,315 |
| Brule | 58.7 | Relatively Low | $19.2M | 5,033 |
| Brookings | 50.1 | Relatively Low | $23.8M | 34,375 |
| Oglala Lakota | 49.8 | Relatively Low | $8.5M | 13,666 |
| Meade | 49.5 | Relatively Low | $21.7M | 29,730 |
| Lawrence | 49.3 | Relatively Low | $16.1M | 25,743 |
| Charles Mix | 48.5 | Relatively Low | $13.2M | 9,373 |
| Hutchinson | 47.9 | Relatively Low | $18.8M | 7,420 |
| Beadle | 47.1 | Relatively Low | $16.4M | 19,129 |
| McCook | 43.4 | Relatively Low | $21.4M | 5,682 |
| Walworth | 39.5 | Very Low | $10.2M | 5,315 |
| Davison | 39.2 | Very Low | $13.2M | 19,950 |
| Corson | 38.1 | Very Low | $7.1M | 3,902 |
| Roberts | 37.8 | Very Low | $8.6M | 10,217 |
| Union | 37.1 | Very Low | $16.3M | 16,799 |
| Todd | 36.6 | Very Low | $6.2M | 9,304 |
| Tripp | 36.5 | Very Low | $8.3M | 5,612 |
| Lake | 32.6 | Very Low | $11.7M | 11,059 |
| Fall River | 30.9 | Very Low | $6.8M | 6,903 |
| Day | 27.6 | Very Low | $7.2M | 5,449 |
| Moody | 26.9 | Very Low | $8.8M | 6,336 |
| Lyman | 26.5 | Very Low | $5.9M | 3,715 |
| Ziebach | 25.2 | Very Low | $4.5M | 2,413 |
| Turner | 24 | Very Low | $10.7M | 8,673 |
| Butte | 23.3 | Very Low | $8.1M | 10,241 |
| Clay | 20.5 | Very Low | $11.6M | 14,967 |
| Aurora | 19.6 | Very Low | $8.1M | 2,747 |
| Grant | 18.9 | Very Low | $10.7M | 7,556 |
| Spink | 17.7 | Very Low | $9.7M | 6,353 |
| Hughes | 16.5 | Very Low | $9.9M | 17,751 |
| Custer | 16.3 | Very Low | $8.8M | 8,303 |
| Gregory | 16.2 | Very Low | $7.5M | 3,989 |
| Hanson | 14.8 | Very Low | $4.3M | 3,461 |
| Marshall | 14.5 | Very Low | $6M | 4,275 |
| Buffalo | 13.7 | Very Low | $4.2M | 1,948 |
| McPherson | 11.1 | Very Low | $3.7M | 2,411 |
| Bon Homme | 10.8 | Very Low | $7.2M | 6,996 |
| Douglas | 10.4 | Very Low | $6M | 2,834 |
| Jackson | 10.2 | Very Low | $2.6M | 2,801 |
| Potter | 10 | Very Low | $5.4M | 2,466 |
| Hamlin | 10 | Very Low | $7M | 6,164 |
| Haakon | 9.7 | Very Low | $4.3M | 1,867 |
| Jerauld | 9.5 | Very Low | $4.3M | 1,663 |
| Faulk | 8 | Very Low | $2.7M | 2,125 |
| Kingsbury | 7.9 | Very Low | $6.7M | 5,183 |
| Edmunds | 7 | Very Low | $5.3M | 3,952 |
| Deuel | 6.9 | Very Low | $5.5M | 4,285 |
| Hyde | 6.5 | Very Low | $2.7M | 1,257 |
| Hand | 6.5 | Very Low | $4.4M | 3,140 |
| Sully | 6.3 | Very Low | $5.2M | 1,446 |
| Bennett | 5.9 | Very Low | $1.9M | 3,380 |
| Mellette | 5.2 | Very Low | $1.9M | 1,879 |
| Stanley | 5.1 | Very Low | $4.3M | 2,972 |
| Clark | 4.5 | Very Low | $4.2M | 3,828 |
| Campbell | 4.4 | Very Low | $4.3M | 1,375 |
| Sanborn | 3.6 | Very Low | $3.8M | 2,329 |
| Miner | 3.4 | Very Low | $4.7M | 2,298 |
| Perkins | 2.6 | Very Low | $3.1M | 2,834 |
| Harding | 1.5 | Very Low | $2.3M | 1,311 |
| Jones | 1.3 | Very Low | $2.1M | 917 |
🏛️ Federal disaster declarations (last 2 years)
Severe Storm · Designated areas: Hyde (County), Stanley (County), Bennett (County), Hughes (County), Hand (County), Lower Brule Indian Reservation, Buffalo (County), Day (County), Crow Creek Indian Reservation, Beadle (County)
Severe Storm · Designated areas: Oglala Sioux Tribe of the Pine Ridge Reservation
Straight-Line Winds · Designated areas: Fall River (County), Pennington (County), Custer (County)
Fire · Designated areas: Custer (County)
Flood · Designated areas: Lake Traverse (Sisseton) Indian Reservation
Severe Storm · Designated areas: Cheyenne River Indian Reservation
Major disaster (DR) and emergency (EM) declarations unlock federal assistance for the designated areas. Source: FEMA / OpenFEMA.
Other states
Data: FEMA National Risk Index (updated ~annually). AlertAtlas is not an official warning service — always follow local authorities.