Seneca County
New York — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 42th
Seneca County faces very low composite natural disaster risk (NRI Risk Index score 41.8, 42th national percentile), driven primarily by drought and ice storm exposure. Expected annual loss across all 18 hazard types is $10M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Drought | Medium | 2.52 / yr | $462K |
| Ice Storm | Medium | 0.74 / yr | $161K |
| Riverine Flood | Low | 0.54 / yr | $8M |
| Hurricane | Low | 0.02 / yr | $146K |
| Hail | Low | 1.89 / yr | $227K |
| Earthquake | Very Low | 0.00 / yr | $176K |
| Lightning | Low | 29.86 / yr | $94K |
| Heat Wave | Very Low | 3.47 / yr | $123K |
| Tornado | Low | 0.06 / yr | $401K |
| Strong Wind | Low | 1.52 / yr | $217K |
| Wildfire | Very Low | 0.00 / yr | $8K |
| Landslide | Very Low | 0.06 / yr | $127 |
| Cold Wave | Very Low | 3.00 / yr | $170K |
| Winter Weather | Very Low | 15.00 / yr | $6K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Tsunami | 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 Seneca County?
Seneca County has a composite FEMA National Risk Index score of 41.8 out of 100, placing it in the Very Low category and the 42th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Seneca County?
The three highest-rated hazards are Drought (Medium, $462K EAL), Ice Storm (Medium, $161K EAL), Riverine Flood (Low, $8M EAL). These account for most of the county's expected annual losses.
How does Seneca County compare to other New York counties?
Seneca County ranks #55 of 62 New York 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. Seneca County's $10M EAL is a statistical average, not a guarantee for any specific year or address.