Natural hazards · Muttontown

Muttontown, NY natural hazards

Most of the natural-hazard damage FEMA expects in Muttontown comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 6 claims here since 1979. 5 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Muttontown?

Very low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Muttontown to be higher than in 12% of U.S. communities, mostly from inland flooding.

Inland flooding69%Hurricanes12%Earthquakes11%Everything else9%

By hazard

What Muttontown faces

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

Inland flooding

69% of expected damage

Well below average · higher than 21% of U.S. places

Recorded about 3 times a year in the area

Hurricanes

12% of expected damage

Well above average · higher than 79% of U.S. places

Recorded about once every 6 years in the area

Earthquakes

11% of expected damage

Above average · higher than 68% of U.S. places

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Muttontown flood?

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

6paid claims since 1979

$39Kpaid to owners

0homes flooded more than once

19792026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Nassau County.

Disasters that hit Muttontown

5 federal disasters brought FEMA money here

Disasters the President declared that paid out in Muttontown itself: aid to households, or repair grants to the Village of Muttontown.

Brought FEMA money into MuttontownDeclared for Nassau County only

2021

Remnants of Hurricane Ida

1 household applied for aid $2K aid approved

2020

Tropical Storm Isaias

$75K to the Village of Muttontown for repairs

2012

Hurricane Sandy

2 households applied for aid $329K to the Village of Muttontown for repairs

2011

Hurricane Irene

$63K to the Village of Muttontown for repairs

2003

Snow

$13K to the Village of Muttontown for repairs

Nassau County has had 24 natural disasters declared since 1953, most often hurricanes and severe storms.

Around Muttontown

Muttontown and the towns around it

Very lowLowModerateHighVery high

Muttontownmostly inland floodingVery low

Upper Brookvillemostly inland floodingVery low

Brookvillemostly inland floodingVery low

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. Muttontown covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Muttontown’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Village of Muttontown. 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 Muttontown total about $3.1M 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.