Tehama County
California — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 89th
Tehama County faces medium composite natural disaster risk (NRI Risk Index score 88.9, 89th national percentile), driven primarily by drought and wildfire exposure. Expected annual loss across all 18 hazard types is $69M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Drought | High | 78.95 / yr | $6M |
| Wildfire | High | 0.01 / yr | $16M |
| Landslide | High | 78.86 / yr | $625K |
| Earthquake | Medium | 0.04 / yr | $11M |
| Volcanic Activity | Low | 0.00 / yr | $58K |
| Riverine Flood | Medium | 0.75 / yr | $35M |
| Heat Wave | Low | 6.90 / yr | $459K |
| Lightning | Low | 12.79 / yr | $141K |
| Avalanche | Very Low | 0.01 / yr | $79 |
| Tornado | Very Low | 0.16 / yr | $96K |
| Hail | Very Low | 0.11 / yr | $25K |
| Strong Wind | Very Low | 0.01 / yr | $21K |
| Winter Weather | Very Low | 13.47 / yr | $1K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Cold Wave | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Ice Storm | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Tehama County?
Tehama County has a composite FEMA National Risk Index score of 88.9 out of 100, placing it in the Medium category and the 89th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Tehama County?
The three highest-rated hazards are Drought (High, $6M EAL), Wildfire (High, $16M EAL), Landslide (High, $625K EAL). These account for most of the county's expected annual losses.
How does Tehama County compare to other California counties?
Tehama County ranks #41 of 58 California 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. Tehama County's $69M EAL is a statistical average, not a guarantee for any specific year or address.