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Natural hazards · Grafton

Grafton, NH natural hazards

Most of the natural-hazard damage FEMA expects in Grafton comes from inland flooding, and overall the risk is very high for a U.S. community. 11 federal disasters brought FEMA money into town.

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

How exposed is Grafton?

81
Very high
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Grafton to be higher than in 81% of U.S. communities, mostly from inland flooding.

Inland flooding83%Everything else17%
By hazard

What Grafton faces

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

Inland flooding

83% of expected damage
Well above average · higher than 94% of U.S. places
Recorded about 4 times a year in the area

Lower here

HurricanesTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningAvalanches

Not a risk here

Coastal floodingDroughtTsunamisVolcanic 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 Grafton flood?

FEMA's records show no paid flood insurance claims in Grafton.

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

11 federal disasters brought FEMA money here

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

Brought FEMA money into GraftonDeclared for Grafton County only
2023

Severe Storms and Flooding

$60K to the Town of Grafton for repairs
2019

Severe Storm and Flooding

$32K to the Town of Grafton for repairs
2017

Severe Storms and Flooding

$76K to the Town of Grafton for repairs
2011

Tropical Storm Irene

7 households applied for aid $5K aid approved $265K to the Town of Grafton for repairs
2007

Severe Storms and Flooding

$591K to the Town of Grafton for repairs
2006

Severe Storms and Flooding

$47K to the Town of Grafton for repairs
2005

Record Snow

$5K to the Town of Grafton for repairs
2005

Record And/Or Near Record Snow

$4K to the Town of Grafton for repairs
2003

Snow

$3K to the Town of Grafton for repairs
2001

Snow

$3K to the Town of Grafton for repairs
1999

Tropical Storm Floyd

$21K to the Town of Grafton for repairs
Grafton County has had 32 natural disasters declared since 1953, most often severe storms and floods.
Around Grafton

Grafton and the towns around it

Springfield: High, mostly inland floodingDanbury: Very high, mostly inland floodingOrange: Very high, mostly inland floodingEnfield: High, mostly inland floodingCanaan: Very high, mostly inland floodingGrantham: High, mostly inland floodingWilmot: Very high, mostly inland floodingNew London: Very low, mostly inland floodingSunapee: Moderate, mostly inland floodingCroydon: High, mostly inland floodingHill: Very high, mostly inland floodingAlexandria: Very high, mostly inland floodingGroton: Very high, mostly inland floodingDorchester: Very high, mostly inland floodingLebanon: High, mostly inland floodingHanover: Moderate, mostly inland floodingGrafton: Very high, mostly inland flooding GraftonSpringfieldDanburyOrangeEnfieldCanaan
Very lowLowModerateHighVery high
Graftonmostly inland floodingVery high
Orangemostly inland floodingVery high
Danburymostly inland floodingVery high
Canaanmostly inland floodingVery high
Enfieldmostly inland floodingHigh
Springfieldmostly inland floodingHigh
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. Grafton is smaller than a census tract, so it shares the figures of the tract around its center.
Money that reached townFlood claims are matched to Grafton’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Grafton. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

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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