Idaho drought risk
Bingham County has the highest drought risk in Idaho, scoring 26.8 out of 100 — rated "Very Low" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Bingham County | 26.8 | Very Low | 0 |
| 2 | Minidoka County | 26 | Very Low | 0 |
| 3 | Cassia County | 25.2 | Very Low | 0 |
| 4 | Power County | 24.4 | Very Low | 0 |
| 5 | Jerome County | 24.1 | Very Low | 0 |
| 6 | Twin Falls County | 23.3 | Very Low | 0 |
| 7 | Jefferson County | 22.2 | Very Low | 0 |
| 8 | Madison County | 21.3 | Very Low | 0 |
| 9 | Canyon County | 20.9 | Very Low | 0 |
| 10 | Gooding County | 20.9 | Very Low | 0 |
| 11 | Owyhee County | 20 | Very Low | 0 |
| 12 | Bonneville County | 19.4 | Very Low | 0 |
| 13 | Fremont County | 19.3 | Very Low | 0 |
| 14 | Lincoln County | 18.6 | Very Low | 0 |
| 15 | Butte County | 18.2 | Very Low | 0 |
| 16 | Caribou County | 18 | Very Low | 0 |
| 17 | Elmore County | 18 | Very Low | 0 |
| 18 | Franklin County | 16.5 | Very Low | 0 |
| 19 | Bannock County | 16.2 | Very Low | 0 |
| 20 | Clark County | 16.1 | Very Low | 0 |
| 21 | Latah County | 16 | Very Low | 0 |
| 22 | Teton County | 15.9 | Very Low | 0 |
| 23 | Blaine County | 15.6 | Very Low | 0 |
| 24 | Nez Perce County | 15.6 | Very Low | 0 |
| 25 | Oneida County | 15.5 | Very Low | 0 |
| 26 | Bear Lake County | 15.4 | Very Low | 0 |
| 27 | Camas County | 15.4 | Very Low | 0 |
| 28 | Lewis County | 15.3 | Very Low | 0 |
| 29 | Boundary County | 15.2 | Very Low | 0 |
| 30 | Custer County | 15 | Very Low | 0 |
| 31 | Idaho County | 14.9 | Very Low | 0 |
| 32 | Payette County | 14.8 | Very Low | 0 |
| 33 | Ada County | 14.6 | Very Low | 0 |
| 34 | Lemhi County | 14.4 | Very Low | 0 |
| 35 | Benewah County | 14.2 | Very Low | 0 |
| 36 | Washington County | 14.2 | Very Low | 0 |
| 37 | Kootenai County | 14 | Very Low | 0 |
| 38 | Bonner County | 13.4 | Very Low | 0 |
| 39 | Clearwater County | 13.3 | Very Low | 0 |
| 40 | Adams County | 13.2 | Very Low | 0 |
| 41 | Gem County | 13.2 | Very Low | 0 |
| 42 | Valley County | 12.8 | Very Low | 0 |
| 43 | Boise County | 12.4 | Very Low | 0 |
| 44 | Shoshone County | 12.4 | Very Low | 0 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Drought risk nationally:
Other hazard risks in Idaho:
Frequently asked questions
What is the highest drought risk county in Idaho?
Bingham County, ID has the highest drought risk in Idaho, with a FEMA National Risk Index score of 26.8 out of 100 (rated "Very Low").
What causes drought risk in Idaho?
Drought risk captures expected annual losses from prolonged precipitation deficits affecting agriculture, water supply, and ecosystems. High scores cover the western Great Plains, Southwest, and California's Central Valley. Climate change is increasing drought frequency and severity across much of the US, with multi-year droughts becoming more common in the West.