Beaverhead County
Montana — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 43th
Beaverhead County faces low composite natural disaster risk (NRI Risk Index score 42.9, 43th national percentile), driven primarily by avalanche and landslide exposure. Expected annual loss across all 18 hazard types is $10M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Avalanche | High | 0.13 / yr | $2M |
| Landslide | Medium | 3.66 / yr | $60K |
| Winter Weather | High | 36.80 / yr | $220K |
| Earthquake | Low | 0.04 / yr | $2M |
| Wildfire | Low | 0.00 / yr | $480K |
| Cold Wave | Medium | 3.48 / yr | $2M |
| Lightning | Medium | 34.80 / yr | $288K |
| Drought | Low | 120.57 / yr | $44K |
| Riverine Flood | Low | 0.18 / yr | $3M |
| Hail | Very Low | 0.28 / yr | $30K |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
| Ice Storm | Very Low | 0.01 / yr | $4K |
| Strong Wind | Very Low | 0.26 / yr | $33K |
| Tornado | Very Low | 0.17 / yr | $24K |
| Heat Wave | Very Low | 0.05 / yr | $4K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Beaverhead County?
Beaverhead County has a composite FEMA National Risk Index score of 42.9 out of 100, placing it in the Low category and the 43th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Beaverhead County?
The three highest-rated hazards are Avalanche (High, $2M EAL), Landslide (Medium, $60K EAL), Winter Weather (High, $220K EAL). These account for most of the county's expected annual losses.
How does Beaverhead County compare to other Montana counties?
Beaverhead County ranks #22 of 56 Montana counties for overall natural disaster risk, with a 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. Beaverhead County's $10M EAL is a statistical average, not a guarantee for any specific year or address.