New Hampshire drought risk
Rockingham County has the highest drought risk in New Hampshire, scoring 77.1 out of 100 — rated "Relatively Moderate" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Rockingham County | 77.1 | Relatively Moderate | 0 |
| 2 | Strafford County | 66.3 | Relatively Moderate | 0 |
| 3 | Merrimack County | 58.8 | Relatively Low | 0 |
| 4 | Hillsborough County | 57.9 | Relatively Low | 0 |
| 5 | Belknap County | 34.4 | Relatively Low | 0 |
| 6 | Carroll County | 0 | No Rating | 0 |
| 7 | Cheshire County | 0 | No Rating | 0 |
| 8 | Coos County | 0 | No Rating | 0 |
| 9 | Grafton County | 0 | No Rating | 0 |
| 10 | Sullivan County | 0 | No Rating | 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 New Hampshire:
Frequently asked questions
What is the highest drought risk county in New Hampshire?
Rockingham County, NH has the highest drought risk in New Hampshire, with a FEMA National Risk Index score of 77.1 out of 100 (rated "Relatively Moderate").
What causes drought risk in New Hampshire?
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.