Bonner County Disaster Risk

Bonner County has a FEMA National Risk Index rating of Relatively Low, placing it in the 77th 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.

Bonner County is evaluated for five major natural hazard types: flooding (87th percentile), wildfire (83th percentile), earthquake (56th percentile), tornado (10th percentile). The highest-risk hazard is flooding at the 87th 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.

Bonner County's composite risk percentile is 77th, compared to the Idaho state average of 39th percentile. The state's overall risk rating is Very Low. This means Bonner County faces higher natural disaster risk than the typical county in Idaho.

Yes, Bonner County's flooding risk is at the 87th percentile nationally. This places it in the top quartile for this hazard type.

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.

Bonner County's composite risk score of 77th percentile is above the Idaho state average of 39th percentile. This elevated risk is driven by flooding exposure (87th percentile), along with wildfire and earthquake risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.