Colusa County Disaster Risk

Colusa County has a FEMA National Risk Index rating of Relatively Moderate, placing it in the 81th 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.

Colusa County is evaluated for five major natural hazard types: earthquake (91th percentile), wildfire (89th percentile), flooding (38th percentile), tornado (9th percentile). The highest-risk hazard is earthquake at the 91th 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.

Colusa County's composite risk percentile is 81th, compared to the California state average of 89th percentile. The state's overall risk rating is Relatively Moderate. This means Colusa County faces lower natural disaster risk than the typical county in California.

Yes, Colusa County's earthquake risk is at the 91th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Colusa County is at the 38th 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.

Colusa County's composite risk score of 81th percentile is below the California state average of 89th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is earthquake at the 91th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.