Nez Perce County
Idaho — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 33th
Nez Perce County faces very low composite natural disaster risk (NRI Risk Index score 33.0, 33th national percentile), driven primarily by wildfire and avalanche exposure. Expected annual loss across all 18 hazard types is $15M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Wildfire | Medium | 0.00 / yr | $2M |
| Avalanche | Very Low | 0.01 / yr | $4K |
| Riverine Flood | Low | 0.54 / yr | $12M |
| Heat Wave | Low | 4.52 / yr | $697K |
| Landslide | Very Low | 0.40 / yr | $1K |
| Earthquake | Very Low | 0.00 / yr | $196K |
| Cold Wave | Very Low | 0.23 / yr | $299K |
| Drought | Very Low | 18.02 / yr | $1K |
| Lightning | Very Low | 16.92 / yr | $41K |
| Hail | Very Low | 0.34 / yr | $35K |
| Strong Wind | Very Low | 0.19 / yr | $84K |
| Tornado | Very Low | 0.02 / yr | $56K |
| Ice Storm | Very Low | 0.01 / yr | $5K |
| Winter Weather | Very Low | 12.51 / yr | $5K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Nez Perce County?
Nez Perce County has a composite FEMA National Risk Index score of 33.0 out of 100, placing it in the Very Low category and the 33th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Nez Perce County?
The three highest-rated hazards are Wildfire (Medium, $2M EAL), Avalanche (Very Low, $4K EAL), Riverine Flood (Low, $12M EAL). These account for most of the county's expected annual losses.
How does Nez Perce County compare to other Idaho counties?
Nez Perce County ranks #26 of 44 Idaho counties for overall natural disaster risk, with a very low rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Nez Perce County's $15M EAL is a statistical average, not a guarantee for any specific year or address.