Clark County Disaster Risk
Clark County, Washington
FEMA Risk Rating
Relatively Moderate
National Percentile
92th
of 3,144 counties
State Rank
#9
of 39 (1 = highest risk)
Flood Risk
93th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Moderate
Higher than 93% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively Low
Higher than 70% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 31% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively High
Higher than 98% of US counties
Risk Overview
About Natural Disaster Risk in Clark County, Washington
Clark County ranks among most hazardous
Clark County's composite risk score of 92.24 is the highest in Washington and well above the national average, placing it in the relatively moderate risk category. Residents face substantial exposure to multiple natural disasters that require comprehensive preparedness.
Washington's single highest-risk county
Clark County's score of 92.24 significantly exceeds Washington's state average of 70.01, ranking it as the state's most hazardous county by composite risk. The county faces notably greater disaster exposure than all but a few other Washington communities.
Riskier than adjacent counties
Clark County (92.24) faces more disaster risk than neighboring Cowlitz County (90.30) and substantially more than western Washington communities across the Cascades. Its lower-elevation position and proximity to seismic zones create exceptional hazard exposure.
Earthquakes, floods, and wildfires converge
Clark County experiences extreme earthquake risk (97.65), severe flood risk (92.56), and elevated wildfire risk (69.59), creating a uniquely hazardous environment. Tornado risk is also moderate at 31.27, making four distinct hazards significant concerns for residents.
Multi-hazard protection is critical
Clark County residents should maintain comprehensive disaster coverage including earthquake insurance, flood insurance through the National Flood Insurance Program, and wildfire protection. Given the county's status as Washington's highest-risk county, adequate insurance across all hazard categories is non-negotiable for financial security.
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 faces a moderate natural disaster risk profile, ranking at the 92th percentile nationally under FEMA's composite risk model. This risk level calls for more than general awareness: insurance coverage review, a family communication plan, and a prepared go-bag are practical priorities.
Hazard Breakdown
Earthquake risk is Clark County's dominant natural hazard, ranked at the 98th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 93th percentile nationally. Additional tracked hazards include wildfire (70th percentile), tornado (31th percentile).
Preparedness Context
Earthquake risk is Clark County's leading natural hazard, ranked at the 98th percentile nationally. Securing tall furniture, water heaters, and bookcases to walls with anti-tip hardware is among the simplest and most effective life-safety measures households can take. The county's flood risk at the 93th percentile nationally is a seasonal consideration alongside the year-round earthquake threat, requiring awareness of both hazard types. Clark County residents should locate the main gas shutoff valve and keep an appropriate wrench nearby — gas leaks cause a significant share of earthquake-related injuries and fires, and the shutoff step is safe to take immediately after shaking stops.
Regional Context
Clark County's composite risk score sits 22.2 points above the Washington county average, placing it among the more hazard-exposed counties in the state.
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, WA?
What types of natural hazards affect Clark County?
How does Clark County risk compare to the Washington average?
Is Clark County at risk for earthquake?
How is natural disaster risk measured?
Why is Clark County higher risk than average?
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.