Naugatuck Valley Planning Region
Connecticut — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 93th
Naugatuck Valley Planning Region faces medium composite natural disaster risk (NRI Risk Index score 93.2, 93th national percentile), driven primarily by riverine flood and hurricane exposure. Expected annual loss across all 18 hazard types is $140M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Riverine Flood | High | 3.54 / yr | $101M |
| Hurricane | High | 0.15 / yr | $24M |
| Ice Storm | High | 2.17 / yr | $2M |
| Strong Wind | High | 3.71 / yr | $2M |
| Winter Weather | High | 15.15 / yr | $364K |
| Landslide | Low | 0.65 / yr | $39K |
| Earthquake | Low | 0.00 / yr | $3M |
| Lightning | High | 27.30 / yr | $1M |
| Heat Wave | Medium | 5.48 / yr | $2M |
| Tornado | Medium | 0.13 / yr | $3M |
| Cold Wave | Medium | 1.39 / yr | $2M |
| Hail | Low | 2.52 / yr | $326K |
| Drought | Low | 3.85 / yr | $153K |
| Wildfire | Very Low | 0.00 / yr | $43K |
| Coastal Flood | Very Low | 6.16 / yr | $27K |
| Avalanche | 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 Naugatuck Valley Planning Region?
Naugatuck Valley Planning Region has a composite FEMA National Risk Index score of 93.2 out of 100, placing it in the Medium category and the 93th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Naugatuck Valley Planning Region?
The three highest-rated hazards are Riverine Flood (High, $101M EAL), Hurricane (High, $24M EAL), Ice Storm (High, $2M EAL). These account for most of the county's expected annual losses.
How does Naugatuck Valley Planning Region compare to other Connecticut counties?
Naugatuck Valley Planning Region ranks #4 of 9 Connecticut 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. Naugatuck Valley Planning Region's $140M EAL is a statistical average, not a guarantee for any specific year or address.