Denali Borough
Alaska — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 28th
Denali Borough faces very low composite natural disaster risk (NRI Risk Index score 28.3, 28th national percentile), driven primarily by avalanche and landslide exposure. Expected annual loss across all 18 hazard types is $11M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Avalanche | Very High | 0.50 / yr | $6M |
| Landslide | Low | 30.97 / yr | $35K |
| Wildfire | Low | 0.01 / yr | $806K |
| Earthquake | Low | 0.11 / yr | $2M |
| Volcanic Activity | Very Low | 0.01 / yr | $133 |
| Cold Wave | Low | 6.33 / yr | $2M |
| Winter Weather | Low | 16.68 / yr | $30K |
| Ice Storm | Very Low | 0.01 / yr | $1K |
| Riverine Flood | Very Low | 0.01 / yr | $361K |
| Lightning | Very Low | 27.20 / yr | $6K |
| Hail | Very Low | 0.00 / yr | $86 |
| Strong Wind | Very Low | 0.00 / yr | $1 |
| Tornado | Very Low | 0.00 / yr | $1 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | Very Low | 0.00 / yr | $0 |
| Heat Wave | 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 Denali Borough?
Denali Borough has a composite FEMA National Risk Index score of 28.3 out of 100, placing it in the Very Low category and the 28th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Denali Borough?
The three highest-rated hazards are Avalanche (Very High, $6M EAL), Landslide (Low, $35K EAL), Wildfire (Low, $806K EAL). These account for most of the county's expected annual losses.
How does Denali Borough compare to other Alaska counties?
Denali Borough ranks #15 of 30 Alaska counties for overall natural disaster risk, with a very 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. Denali Borough's $11M EAL is a statistical average, not a guarantee for any specific year or address.