Natural hazards · Glastonbury

Glastonbury, CT natural hazards

Most of the natural-hazard damage FEMA expects in Glastonbury comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 25 claims here since 1982.

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

Expected damage

How exposed is Glastonbury?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Glastonbury to be higher than in 51% of U.S. communities, mostly from inland flooding.

Inland flooding81%Hurricanes6%Everything else13%

By hazard

What Glastonbury faces

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

Inland flooding

81% of expected damage

Above average · higher than 74% of U.S. places

Recorded about 4 times a year in the area

Hurricanes

6% of expected damage

Above average · higher than 73% of U.S. places

Recorded about once every 6 years in the area

Lower here

Coastal floodingTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

AvalanchesTsunamisVolcanic 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 Glastonbury flood?

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

25paid claims since 1982

$162Kpaid to owners

0homes flooded more than once

19822026

Biggest named events

Hurricane Irene: 4 claims, $19K
Not a named storm: 1 claim, $632

of homes in flood zones
are insured

of all homes
are insured

No community discount. Glastonbury 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 Glastonbury

Glastonbury and the towns around it

Very lowLowModerateHighVery high

Portlandmostly inland floodingHigh

Cromwellmostly inland floodingHigh

East Hartfordmostly inland floodingModerate

Glastonburymostly inland floodingModerate

East Hamptonmostly inland floodingModerate

Rocky Hillmostly inland floodingModerate

Manchestermostly inland floodingModerate

Marlboroughmostly inland floodingModerate

Wethersfieldmostly inland floodingModerate

Boltonmostly inland floodingLow

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. Glastonbury covers 7 census tracts, combined by population.

Money that reached townFlood claims are matched to Glastonbury’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Glastonbury. 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 Glastonbury total about $11.8M 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.