Beaverhead County Disaster Risk

Beaverhead County has a FEMA National Risk Index rating of Relatively Low, placing it in the 43th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.

Beaverhead County is evaluated for five major natural hazard types: earthquake (86th percentile), wildfire (84th percentile), flooding (36th percentile), tornado (7th percentile). The highest-risk hazard is earthquake at the 86th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.

Beaverhead County's composite risk percentile is 43th, compared to the Montana state average of 33th percentile. The state's overall risk rating is Very Low. This means Beaverhead County faces higher natural disaster risk than the typical county in Montana.

Yes, Beaverhead County's earthquake risk is at the 86th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Beaverhead County is at the 36th percentile.

FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.

Beaverhead County's composite risk score of 43th percentile is above the Montana state average of 33th percentile. This elevated risk is driven by earthquake exposure (86th percentile), along with wildfire risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.