Drought Risk in Idaho
All Idaho counties ranked by FEMA National Risk Index drought score
Drought risk — extended dry periods that stress water supplies and agriculture — is rated for 44 of 44 Idaho counties in FEMA's National Risk Index. Bingham County carries the state's highest drought score at 26.8, with $18K in expected annual drought losses.
No Idaho county reaches the High band for drought, and expected annual losses from drought total roughly $142K statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Drought
| # | County | Drought Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Bingham County | Very Low | 55.37 / yr | $18K | |
| 2 | Minidoka County | Very Low | 58.01 / yr | $15K | |
| 3 | Cassia County | Very Low | 64.26 / yr | $15K | |
| 4 | Power County | Very Low | 63.73 / yr | $12K | |
| 5 | Jerome County | Very Low | 59.79 / yr | $8K | |
| 6 | Twin Falls County | Very Low | 75.62 / yr | $10K | |
| 7 | Jefferson County | Very Low | 58.68 / yr | $9K | |
| 8 | Madison County | Very Low | 39.51 / yr | $6K | |
| 9 | Canyon County | Very Low | 17.43 / yr | $6K | |
| 10 | Gooding County | Very Low | 61.13 / yr | $5K | |
| 11 | Owyhee County | Very Low | 94.18 / yr | $2K | |
| 12 | Bonneville County | Very Low | 62.94 / yr | $5K | |
| 13 | Fremont County | Very Low | 67.53 / yr | $5K | |
| 14 | Lincoln County | Very Low | 78.98 / yr | $3K | |
| 15 | Butte County | Very Low | 93.39 / yr | $2K | |
| 16 | Elmore County | Very Low | 52.06 / yr | $3K | |
| 17 | Caribou County | Very Low | 68.24 / yr | $3K | |
| 18 | Franklin County | Very Low | 74.13 / yr | $2K | |
| 19 | Bannock County | Very Low | 67.55 / yr | $1K | |
| 20 | Clark County | Very Low | 92.83 / yr | $1K | |
| 21 | Latah County | Very Low | 14.34 / yr | $1K | |
| 22 | Teton County | Very Low | 28.76 / yr | $1K | |
| 23 | Blaine County | Very Low | 75.29 / yr | $955 | |
| 24 | Nez Perce County | Very Low | 18.02 / yr | $1K | |
| 25 | Oneida County | Very Low | 80.92 / yr | $1K | |
| 26 | Bear Lake County | Very Low | 78.84 / yr | $1K | |
| 27 | Camas County | Very Low | 47.94 / yr | $730 | |
| 28 | Lewis County | Very Low | 15.86 / yr | $608 | |
| 29 | Boundary County | Very Low | 22.29 / yr | $520 | |
| 30 | Custer County | Very Low | 93.94 / yr | $387 | |
| 31 | Idaho County | Very Low | 32.65 / yr | $468 | |
| 32 | Payette County | Very Low | 19.19 / yr | $616 | |
| 33 | Ada County | Very Low | 14.29 / yr | $783 | |
| 34 | Lemhi County | Very Low | 68.80 / yr | $355 | |
| 35 | Washington County | Very Low | 23.53 / yr | $237 | |
| 36 | Benewah County | Very Low | 15.08 / yr | $300 | |
| 37 | Kootenai County | Very Low | 14.92 / yr | $281 | |
| 38 | Bonner County | Very Low | 17.44 / yr | $110 | |
| 39 | Clearwater County | Very Low | 30.47 / yr | $53 | |
| 40 | Adams County | Very Low | 17.89 / yr | $50 | |
| 41 | Gem County | Very Low | 12.54 / yr | $77 | |
| 42 | Valley County | Very Low | 23.54 / yr | $12 | |
| 43 | Shoshone County | Very Low | 33.25 / yr | $1 | |
| 44 | Boise County | Very Low | 7.80 / yr | $1 |
44 Idaho counties with measurable drought risk. See the national drought ranking or all Idaho counties by overall risk.
Frequently Asked Questions
Which Idaho county has the highest drought risk?
Bingham County has the highest FEMA drought risk score in Idaho at 26.8 (Very Low), with $18K in expected annual losses and about 55.37 events per year.
How many Idaho counties face significant drought risk?
44 Idaho counties record measurable drought risk in FEMA's National Risk Index; 0 of them are rated High or Very High.