Clark County Disaster Risk
Clark County, Idaho
FEMA Risk Rating
Very Low
National Percentile
1th
of 3,144 counties
State Rank
#44
of 44 (1 = highest risk)
Flood Risk
2th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Very Low
Higher than 2% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively Low
Higher than 65% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 1% of US counties
Earthquake
Seismic activity and ground shaking risk
Very Low
Higher than 31% of US counties
Risk Overview
About Natural Disaster Risk in Clark County, Idaho
Clark County's risk is exceptionally low
With a composite risk score of 0.76 and a Very Low rating, Clark County sits far below the national average for natural disaster exposure. This puts your community among the safest in the country for multiple hazard types.
Lowest-risk county in Idaho
Clark County's composite score of 0.76 dramatically outperforms Idaho's state average of 38.51, making it the safest county in the state by a wide margin. Your neighbors across Idaho face significantly higher hazard exposure.
Standing alone in safety
Clark County's 0.76 score is nearly 45 times lower than Clearwater County's 46.91 and 68 times lower than Custer County's 52.42, its nearest regional neighbors. This exceptional advantage reflects both geography and relatively sparse development patterns.
Wildfire and earthquake are top concerns
Even in Clark County, wildfire risk registers at 64.66 and earthquake risk at 30.95—higher than flood (2.13) or tornado risk (1.49). These two hazards deserve your preparedness attention despite the county's overall low-risk profile.
Focus insurance on forest fire exposure
While Clark County's overall risk is minimal, properties in or near forested areas should carry robust wildfire coverage and maintain defensible space. Standard homeowners policies may exclude wildfire damage, so review your coverage with an agent now.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Clark County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Clark County
Risk Verdict
Clark County's overall natural disaster score at the 1th percentile puts it well below the national median for hazard exposure. Even at the 1th percentile, Clark County's composite score reflects real hazard exposure categories — knowing which ones apply locally enables targeted, efficient household preparedness.
Hazard Breakdown
Wildfire risk is Clark County's dominant natural hazard, ranked at the 65th percentile nationally under FEMA's National Risk Index. Earthquake ranks second at the 31th percentile nationally. Additional tracked hazards include flood (2th percentile), tornado (1th percentile).
Preparedness Context
With wildfire ranked at the 65th percentile nationally, Clark County is in a zone where air quality can deteriorate rapidly before structures are threatened. An N95 respirator and a HEPA air purifier are practical items for Clark County households to have on hand before fire season. The county's earthquake exposure at the 31th percentile nationally complements the wildfire risk — saturating rain after burn scarring often triggers secondary flood and debris flow events. Defensible space, insurance review, and an evacuation plan are the three preparedness pillars for Clark County households — and the insurance review is the one most often deferred by Clark County residents and most costly to skip when a fire event actually occurs.
Regional Context
Clark County's composite risk score sits 37.7 points below the Idaho county average, reflecting a more favorable hazard environment than the state typical.
Is your household prepared for Clark County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Clark County, ID?
What types of natural hazards affect Clark County?
How does Clark County risk compare to the Idaho average?
Is Clark County at risk for wildfire?
How is natural disaster risk measured?
Is Clark County a safe place to live?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.