Natural hazards · Cornwall

Cornwall, CT natural hazards

Most of the natural-hazard damage FEMA expects in Cornwall comes from inland flooding, and overall the risk is high for a U.S. community. Flood insurance has paid 2 claims here since 2005.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations

Expected damage

How exposed is Cornwall?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Cornwall to be higher than in 72% of U.S. communities, mostly from inland flooding.

Inland flooding84%Hurricanes8%Everything else9%

By hazard

What Cornwall faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Inland flooding

84% of expected damage

Well above average · higher than 88% of U.S. places

Recorded about 4 times a year in the area

Hurricanes

8% of expected damage

Well above average · higher than 82% of U.S. places

Recorded about once every 11 years in the area

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningDroughtAvalanches

Not a risk here

Coastal floodingTsunamisVolcanic activity

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Cornwall flood?

Every paid claim on a federal flood insurance policy in Cornwall, from FEMA’s records.

2paid claims since 2005

$49Kpaid to owners

0homes flooded more than once

20052026

Biggest named events

Hurricane Irene: 1 claim, $47K

of all homes
are insured

No community discount. Cornwall isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: .

Around Cornwall

Cornwall and the towns around it

Very lowLowModerateHighVery high

Kentmostly inland floodingHigh

Cornwallmostly inland floodingHigh

Canaanmostly inland floodingHigh

Sharonmostly inland floodingModerate

Warrenmostly inland floodingModerate

Goshenmostly inland floodingModerate

About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.

Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Cornwall covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Cornwall’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Cornwall. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Cornwall total about $1.0M 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.