Clatsop County Disaster Risk
Clatsop County, Oregon
FEMA Risk Rating
Relatively High
National Percentile
95th
of 3,144 counties
State Rank
#5
of 36 (1 = highest risk)
Flood Risk
96th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively High
Higher than 96% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively Low
Higher than 44% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 12% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively High
Higher than 97% of US counties
Risk Overview
About Natural Disaster Risk in Clatsop County, Oregon
Clatsop County: High National Risk
Clatsop County scores 95.07 on the composite risk scale, ranking among the nation's highest-risk counties and nearly 32 points above Oregon's 63.43 state average. This coastal county faces significant multi-hazard exposure driven by water and seismic threats.
Oregon's Riskiest County
Clatsop County ranks as one of Oregon's highest-risk counties by composite score, reflecting its unique coastal geography and seismic setting. Only a handful of Oregon counties approach this risk level.
Riskier Than Coastal Peers
Clatsop County's 95.07 score exceeds neighboring Tillamook County and other coastal counties, driven by exceptionally high flood (96.40) and earthquake (96.50) risks. Its position at the mouth of the Columbia River amplifies flood vulnerability compared to southern Oregon coastal counties.
Floods and Earthquakes Dominate
Flood risk soars to 96.40—the county's most severe threat—reflecting heavy winter rains, storm surge potential, and river proximity. Earthquake risk is nearly as dangerous at 96.50, positioning Clatsop residents near major Cascadia Subduction Zone rupture zones where tsunamis and ground shaking create compounded coastal risks.
Coastal Hazard Insurance Is Mandatory
Flood insurance is non-negotiable for Clatsop County residents; most lenders require it for properties in designated flood zones, and the risk extends beyond mapped areas. Earthquake insurance protects against the subduction zone threat, and tsunami evacuation planning is essential for coastal communities.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Clatsop County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Clatsop County
Risk Verdict
At the 95th percentile nationally, Clatsop County is among the more hazard-exposed counties in the United States. Proactive preparedness — not reactive response — is key to managing life in one of the country's higher-risk counties; Clatsop County residents should plan accordingly.
Hazard Breakdown
Earthquake risk is Clatsop County's dominant natural hazard, ranked at the 97th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 96th percentile nationally. Additional tracked hazards include wildfire (44th percentile), tornado (12th percentile).
Preparedness Context
At the 97th percentile nationally for earthquake exposure, Clatsop County households benefit from practicing Drop, Cover, and Hold On — the protocol that minimizes injury during shaking. Getting under a sturdy table or desk and holding on until shaking stops is the key action. Alongside earthquake exposure, Clatsop County's flood risk at the 96th percentile nationally reinforces the value of maintaining a household emergency supply cache usable for multiple hazard scenarios. Building age matters for earthquake risk in Clatsop County: structures built before local seismic code adoption are statistically more vulnerable. Contacting the local building department about retrofit programs can reveal whether your structure qualifies for mitigation assistance.
Regional Context
At 31.6 points above the Oregon state average, Clatsop County carries meaningfully higher natural disaster exposure than a typical Oregon county.
Is your household prepared for Clatsop County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Clatsop County, OR?
What types of natural hazards affect Clatsop County?
How does Clatsop County risk compare to the Oregon average?
Is Clatsop County at risk for earthquake?
How is natural disaster risk measured?
Why is Clatsop 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.