Linn County
Oregon — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 88th
Linn County faces medium composite natural disaster risk (NRI Risk Index score 88.1, 88th national percentile), driven primarily by earthquake and volcanic activity exposure. Expected annual loss across all 18 hazard types is $71M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Earthquake | Medium | 0.02 / yr | $38M |
| Volcanic Activity | Low | 0.01 / yr | $34K |
| Riverine Flood | Medium | 0.25 / yr | $28M |
| Strong Wind | High | 0.05 / yr | $2M |
| Heat Wave | Medium | 5.05 / yr | $2M |
| Landslide | Low | 1.96 / yr | $14K |
| Lightning | Medium | 7.37 / yr | $492K |
| Winter Weather | Medium | 23.03 / yr | $101K |
| Wildfire | Very Low | 0.00 / yr | $75K |
| Ice Storm | Low | 0.39 / yr | $98K |
| Avalanche | Very Low | 0.01 / yr | $202 |
| Cold Wave | Low | 0.32 / yr | $485K |
| Hail | Very Low | 0.23 / yr | $83K |
| Drought | Very Low | 17.00 / yr | $2K |
| Tornado | Very Low | 0.13 / yr | $152K |
| 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 Linn County?
Linn County has a composite FEMA National Risk Index score of 88.1 out of 100, placing it in the Medium category and the 88th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Linn County?
The three highest-rated hazards are Earthquake (Medium, $38M EAL), Volcanic Activity (Low, $34K EAL), Riverine Flood (Medium, $28M EAL). These account for most of the county's expected annual losses.
How does Linn County compare to other Oregon counties?
Linn County ranks #12 of 36 Oregon counties for overall natural disaster risk, with a medium 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. Linn County's $71M EAL is a statistical average, not a guarantee for any specific year or address.