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Natural hazards · Wilton

Wilton, NH natural hazards

Most of the natural-hazard damage FEMA expects in Wilton comes from inland flooding, and overall the risk is high for a U.S. community. Flood insurance has paid 5 claims here since 1979. 10 federal disasters brought FEMA money into town.

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

How exposed is Wilton?

76
High
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Wilton to be higher than in 76% of U.S. communities, mostly from inland flooding.

Inland flooding79%Hurricanes8%Everything else14%
By hazard

What Wilton faces

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

Inland flooding

79% of expected damage
Well above average · higher than 89% of U.S. places
Recorded about 2 times a year in the area

Hurricanes

8% of expected damage
Well above average · higher than 83% of U.S. places
Recorded about once every 10 years in the area

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingDroughtAvalanchesTsunamisVolcanic 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 Wilton flood?

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

5paid claims since 1979
$319Kpaid to owners
1homes flooded more than once
19792026

Biggest named events

  • March 2010 Nor'easter: 1 claim, $38K

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

of homes in flood zones
are insured
of all homes
are insured
No community discount. Wilton isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Hillsborough County.
Disasters that hit Wilton

10 federal disasters brought FEMA money here

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

Brought FEMA money into WiltonDeclared for Hillsborough County only
2015

Severe Winter Storm and Snowstorm

$8K to the Town of Wilton for repairs
2011

Severe Storm and Snowstorm

$13K to the Town of Wilton for repairs
2010

Severe Storms and Flooding

$28K to the Town of Wilton for repairs
2008

Severe Winter Storm

$57K to the Town of Wilton for repairs
2007

Severe Storms and Flooding

20 households applied for aid $30K aid approved $294K to the Town of Wilton for repairs
2006

Severe Storms and Flooding

2 households applied for aid
2005

Record Snow

$8K to the Town of Wilton for repairs
2005

Record And/Or Near Record Snow

$13K to the Town of Wilton for repairs
2003

Snow

$15K to the Town of Wilton for repairs
2001

Snow

$7K to the Town of Wilton for repairs
Hillsborough County has had 26 natural disasters declared since 1953, most often severe storms and winter storms.
Around Wilton

Wilton and the towns around it

Lyndeborough: Moderate, mostly inland floodingMilford: Moderate, mostly inland floodingTemple: Low, mostly inland floodingMason: Low, mostly inland floodingMont Vernon: Very low, mostly inland floodingGreenfield: Low, mostly inland floodingAmherst: Moderate, mostly inland floodingHollis: Moderate, mostly inland floodingBrookline: Moderate, mostly inland floodingSharon: Low, mostly inland floodingPeterborough: High, mostly inland floodingNew Ipswich: Moderate, mostly inland floodingGreenville: Moderate, mostly inland floodingWilton: High, mostly inland flooding WiltonLyndeboroughMilfordTempleMason
Very lowLowModerateHighVery high
Wiltonmostly inland floodingHigh
Milfordmostly inland floodingModerate
Lyndeboroughmostly inland floodingModerate
Templemostly inland floodingLow
Masonmostly 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. Wilton covers 1 census tract, combined by population.
Money that reached townFlood claims are matched to Wilton’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Wilton. 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 Wilton total about $1.6M 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.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/15 · 2025-01-01
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