Del Norte County
California — Natural Disaster Risk Assessment
HighComposite Risk Score
National percentile: 94th
Del Norte County faces high composite natural disaster risk (NRI Risk Index score 94.4, 94th national percentile), driven primarily by landslide and tsunami exposure. Expected annual loss across all 18 hazard types is $142M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Landslide | High | 2.18 / yr | $847K |
| Tsunami | Very High | 0.23 / yr | $114M |
| Earthquake | Medium | 0.02 / yr | $11M |
| Wildfire | Low | 0.00 / yr | $650K |
| Riverine Flood | Medium | 0.32 / yr | $16M |
| Coastal Flood | Very Low | 3.63 / yr | $25K |
| Avalanche | Very Low | 0.01 / yr | $229 |
| Drought | Low | 19.62 / yr | $58K |
| Heat Wave | Very Low | 1.96 / yr | $31K |
| Lightning | Very Low | 6.99 / yr | $38K |
| Winter Weather | Very Low | 13.27 / yr | $6K |
| Hail | Very Low | 0.05 / yr | $9K |
| Strong Wind | Very Low | 0.03 / yr | $20K |
| Tornado | Very Low | 0.01 / yr | $8K |
| Cold Wave | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Ice Storm | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Del Norte County?
Del Norte County has a composite FEMA National Risk Index score of 94.4 out of 100, placing it in the High category and the 94th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Del Norte County?
The three highest-rated hazards are Landslide (High, $847K EAL), Tsunami (Very High, $114M EAL), Earthquake (Medium, $11M EAL). These account for most of the county's expected annual losses.
How does Del Norte County compare to other California counties?
Del Norte County ranks #30 of 58 California counties for overall natural disaster risk, with a high 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. Del Norte County's $142M EAL is a statistical average, not a guarantee for any specific year or address.