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Natural hazards · Gilmanton

Gilmanton, NH natural hazards

Most of the natural-hazard damage FEMA expects in Gilmanton comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 1 claim here since 1978. 5 federal disasters brought FEMA money into town.

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

How exposed is Gilmanton?

50
Moderate
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Gilmanton to be higher than in 50% of U.S. communities, mostly from inland flooding.

Inland flooding61%Hurricanes11%Lightning10%Everything else17%
By hazard

What Gilmanton faces

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

Inland flooding

61% of expected damage
Above average · higher than 67% of U.S. places
Recorded about once a year in the area

Hurricanes

11% of expected damage
Well above average · higher than 83% of U.S. places
Recorded about once every 9 years in the area

Lightning

10% of expected damage
Well above average · higher than 80% of U.S. places

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windDrought

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 Gilmanton flood?

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

1paid claims since 1978
$318paid to owners
0homes flooded more than once
19782026
of all homes
are insured
No community discount. Gilmanton isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Belknap County.
Disasters that hit Gilmanton

5 federal disasters brought FEMA money here

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

Brought FEMA money into GilmantonDeclared for Belknap County only
2007

Severe Storms and Flooding

6 households applied for aid $4K aid approved $106K to the Town of Gilmanton for repairs
2006

Severe Storms and Flooding

3 households applied for aid $9K aid approved $60K to the Town of Gilmanton for repairs
2005

Severe Storms and Flooding

3 households applied for aid $6K aid approved $33K to the Town of Gilmanton for repairs
2005

Record And/Or Near Record Snow

$8K to the Town of Gilmanton for repairs
2003

Snow

$12K to the Town of Gilmanton for repairs
Belknap County has had 24 natural disasters declared since 1953, most often severe storms and winter storms.
Around Gilmanton

Gilmanton and the towns around it

Barnstead: High, mostly inland floodingBelmont: High, mostly inland floodingAlton: Moderate, mostly inland floodingLoudon: High, mostly inland floodingGilford: Low, mostly inland floodingPittsfield: High, mostly inland floodingStrafford: Low, mostly inland floodingFarmington: High, mostly inland floodingTilton: Moderate, mostly inland floodingSanbornton: Moderate, mostly inland floodingLaconia: Moderate, mostly inland floodingNorthfield: High, mostly inland floodingTuftonboro: Moderate, mostly inland floodingNew Durham: Low, mostly inland floodingWolfeboro: Moderate, mostly inland floodingCanterbury: Moderate, mostly inland floodingChichester: Moderate, mostly inland floodingConcord: Moderate, mostly inland floodingMeredith: Low, mostly inland floodingGilmanton: Moderate, mostly inland flooding GilmantonBarnsteadBelmontAltonLoudonGilford
Very lowLowModerateHighVery high
Loudonmostly inland floodingHigh
Belmontmostly inland floodingHigh
Barnsteadmostly inland floodingHigh
Altonmostly inland floodingModerate
Gilmantonmostly inland floodingModerate
Gilfordmostly 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. Gilmanton covers 1 census tract, combined by population.
Money that reached townFlood claims are matched to Gilmanton’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to the Town of Gilmanton. 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 Gilmanton total about $1.4M 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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