Wasco County
Oregon — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 68th
Wasco County faces low composite natural disaster risk (NRI Risk Index score 67.8, 68th national percentile), driven primarily by wildfire and volcanic activity exposure. Expected annual loss across all 18 hazard types is $29M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Wildfire | High | 0.02 / yr | $15M |
| Volcanic Activity | Low | 0.01 / yr | $28K |
| Ice Storm | High | 0.25 / yr | $609K |
| Earthquake | Low | 0.01 / yr | $2M |
| Avalanche | Low | 0.03 / yr | $9K |
| Riverine Flood | Low | 0.11 / yr | $9M |
| Landslide | Very Low | 1.08 / yr | $2K |
| Cold Wave | Low | 0.39 / yr | $799K |
| Heat Wave | Low | 3.50 / yr | $280K |
| Winter Weather | Low | 13.31 / yr | $49K |
| Lightning | Low | 7.98 / yr | $163K |
| Drought | Very Low | 55.47 / yr | $2K |
| Hail | Very Low | 0.25 / yr | $62K |
| Strong Wind | Very Low | 0.10 / yr | $135K |
| Tornado | Very Low | 0.06 / yr | $18K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Wasco County?
Wasco County has a composite FEMA National Risk Index score of 67.8 out of 100, placing it in the Low category and the 68th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Wasco County?
The three highest-rated hazards are Wildfire (High, $15M EAL), Volcanic Activity (Low, $28K EAL), Ice Storm (High, $609K EAL). These account for most of the county's expected annual losses.
How does Wasco County compare to other Oregon counties?
Wasco County ranks #22 of 36 Oregon counties for overall natural disaster risk, with a low rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Wasco County's $29M EAL is a statistical average, not a guarantee for any specific year or address.