Volcanic Activity Risk in Oregon
All Oregon counties ranked by FEMA National Risk Index volcanic activity score
Volcanic Activity risk — eruptions producing ashfall, lava, and pyroclastic hazards — is rated for 32 of 36 Oregon counties in FEMA's National Risk Index. Deschutes County carries the state's highest volcanic activity score at 96.1, with $554K in expected annual volcanic activity losses.
No Oregon county reaches the High band for volcanic activity, and expected annual losses from volcanic activity total roughly $2M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Volcanic Activity
| # | County | Volcanic Activity Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Deschutes County | Medium | 0.00 / yr | $554K | |
| 2 | Clackamas County | Medium | 0.01 / yr | $495K | |
| 3 | Hood River County | Medium | 0.01 / yr | $491K | |
| 4 | Lane County | Medium | 0.01 / yr | $197K | |
| 5 | Multnomah County | Medium | 0.01 / yr | $159K | |
| 6 | Marion County | Medium | 0.01 / yr | $84K | |
| 7 | Linn County | Low | 0.01 / yr | $34K | |
| 8 | Klamath County | Low | 0.00 / yr | $26K | |
| 9 | Wasco County | Low | 0.01 / yr | $28K | |
| 10 | Washington County | Low | 0.01 / yr | $16K | |
| 11 | Jefferson County | Low | 0.01 / yr | $7K | |
| 12 | Douglas County | Low | 0.00 / yr | $2K | |
| 13 | Yamhill County | Low | 0.01 / yr | $3K | |
| 14 | Polk County | Very Low | 0.01 / yr | $2K | |
| 15 | Lincoln County | Very Low | 0.01 / yr | $1K | |
| 16 | Clatsop County | Very Low | 0.01 / yr | $987 | |
| 17 | Columbia County | Very Low | 0.01 / yr | $1K | |
| 18 | Tillamook County | Very Low | 0.01 / yr | $657 | |
| 19 | Jackson County | Very Low | 0.00 / yr | $290 | |
| 20 | Lake County | Very Low | 0.00 / yr | $212 | |
| 21 | Sherman County | Very Low | 0.01 / yr | $149 | |
| 22 | Harney County | Very Low | 0.00 / yr | $104 | |
| 23 | Umatilla County | Very Low | 0.00 / yr | $102 | |
| 24 | Crook County | Very Low | 0.00 / yr | $88 | |
| 25 | Morrow County | Very Low | 0.00 / yr | $51 | |
| 26 | Grant County | Very Low | 0.00 / yr | $12 | |
| 27 | Malheur County | Very Low | 0.00 / yr | $15 | |
| 28 | Gilliam County | Very Low | 0.01 / yr | $11 | |
| 29 | Wheeler County | Very Low | 0.00 / yr | $6 | |
| 30 | Benton County | Very Low | 0.01 / yr | $0 | |
| 31 | Baker County | Very Low | 0.00 / yr | $0 | |
| 32 | Josephine County | Very Low | 0.00 / yr | $0 |
32 Oregon counties with measurable volcanic activity risk. See the national volcanic activity ranking or all Oregon counties by overall risk.
Frequently Asked Questions
Which Oregon county has the highest volcanic activity risk?
Deschutes County has the highest FEMA volcanic activity risk score in Oregon at 96.1 (Medium), with $554K in expected annual losses and about 0.00 events per year.
How many Oregon counties face significant volcanic activity risk?
32 Oregon counties record measurable volcanic activity risk in FEMA's National Risk Index; 0 of them are rated High or Very High.