Dennis, MA natural hazards
Most of the natural-hazard damage FEMA expects in Dennis comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 200 claims here since 1978. 9 federal disasters brought FEMA money into town.
FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarationsHow exposed is Dennis?
FEMA expects yearly storm and flood damage to homes and buildings in Dennis to be higher than in 47% of U.S. communities, mostly from inland flooding and hurricanes.
What Dennis faces
Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.
Inland flooding
Hurricanes
Coastal flooding
Lower here
Not a risk here
Does Dennis flood?
Every paid claim on a federal flood insurance policy in Dennis, from FEMA’s records.
Biggest named events
- Hurricane Bob: 77 claims, $934K
- December Nor'easter: 14 claims, $510K
- The “Halloween” storm: 7 claims, $36K
Homes that flooded again and again
■ FEMA “severe repetitive loss” (1) ■ flooded 2+ times
are insured
are insured
9 federal disasters brought FEMA money here
Disasters the President declared that paid out in Dennis itself: aid to households, or repair grants to the Town of Dennis.
Severe Winter Storm and Flooding
Severe Winter Storm, Snowstorm, and Flooding
Severe Winter Storm, Snowstorm, and Flooding
Hurricane Sandy
Tropical Storm Irene
Hurricane Earl
Severe Storms and Inland and Coastal Flooding
Record And/Or Near Record Snow
Snow
Dennis and the towns around it
How to read this page
FEMA’s expected losses across Dennis total about $6.1M a year, counting buildings, people and crops.
Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.