Wasco County Disaster Risk
Wasco County, Oregon
FEMA Risk Rating
Relatively Low
National Percentile
68th
of 3,144 counties
State Rank
#22
of 36 (1 = highest risk)
Flood Risk
59th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively Low
Higher than 59% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively High
Higher than 98% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 5% of US counties
Earthquake
Seismic activity and ground shaking risk
Moderate
Higher than 83% of US counties
Risk Overview
About Natural Disaster Risk in Wasco County, Oregon
Wasco ranks low on national risk scale
Wasco County scores 67.81 on the national composite risk scale, placing it in the Relatively Low category and sitting above the national median. This score reflects a county where disaster risk exists but remains manageable compared to the highest-risk counties nationwide.
Moderate risk for Oregon
Wasco's 67.81 composite score sits above Oregon's state average of 63.43, ranking it among the mid-tier counties in the state for overall natural disaster risk. While not among Oregon's most vulnerable counties, Wasco still experiences notably elevated risk in specific hazards.
Wasco faces unique earthquake and fire threats
Among its neighboring counties, Wasco's wildfire risk (98.09) far exceeds Wheeler County's (88.74) and significantly outpaces Yamhill's (52.13). Wasco also carries much higher earthquake risk (82.98) than Wheeler (17.88), reflecting its proximity to major geological fault zones.
Wildfires and earthquakes dominate Wasco's threat landscape
Wasco County faces an exceptional wildfire risk score of 98.09—among the highest statewide—driven by the county's extensive grasslands and proximity to active fire corridors. Earthquake risk ranks second at 82.98, reflecting Wasco's location near the Cascadia Subduction Zone and local fault systems that pose significant structural threats.
Prepare now for fire and seismic events
Wasco residents should prioritize wildfire mitigation through defensible space maintenance and comprehensive homeowners insurance that explicitly covers wildfire damage. Earthquake insurance is critical—standard policies exclude seismic damage, so most Wasco homeowners need supplemental coverage to protect against the county's elevated seismic risk.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Wasco County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Wasco County
Risk Verdict
Natural hazard pressure in Wasco County is below the national midpoint, with a composite score at the 68th percentile. Proactive emergency planning and awareness of the specific hazards driving Wasco County's score can meaningfully reduce household risk.
Hazard Breakdown
Wildfire risk is Wasco County's dominant natural hazard, ranked at the 98th percentile nationally under FEMA's National Risk Index. Earthquake ranks second at the 83th percentile nationally. Additional tracked hazards include flood (59th percentile), tornado (5th percentile).
Preparedness Context
With wildfire ranked at the 98th percentile nationally, Wasco 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 Wasco County households to have on hand before fire season. The county's earthquake exposure at the 83th 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 Wasco County households — and the insurance review is the one most often deferred by Wasco County residents and most costly to skip when a fire event actually occurs.
Regional Context
Wasco County's risk score is broadly comparable to the Oregon county average, with a 4.4-point gap that places the county near the center of the state's hazard distribution.
Is your household prepared for Wasco County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Wasco County, OR?
What types of natural hazards affect Wasco County?
How does Wasco County risk compare to the Oregon average?
Is Wasco County at risk for wildfire?
How is natural disaster risk measured?
Why is Wasco 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.