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Natural hazards · Nashua

Nashua, NH natural hazards

Most of the natural-hazard damage FEMA expects in Nashua comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 40 claims here since 1982. 15 federal disasters brought FEMA money into town.

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

How exposed is Nashua?

50
Moderate
vs. U.S. communities

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

Inland flooding60%Hurricanes16%Earthquakes7%Tornadoes6%Everything else11%
By hazard

What Nashua faces

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

Inland flooding

60% of expected damage
Above average · higher than 60% of U.S. places
Recorded about 2 times a year in the area

Hurricanes

16% of expected damage
Well above average · higher than 84% of U.S. places
Recorded about once every 7 years in the area

Earthquakes

7% of expected damage
Above average · higher than 70% of U.S. places

Tornadoes

6% of expected damage
Below average · higher than 48% of U.S. places

Lower here

HailIce 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 Nashua flood?

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

40paid claims since 1982
$531Kpaid to owners
4homes flooded more than once
19822026

Biggest named events

  • March 2010 Nor'easter: 7 claims, $145K
  • December Nor'easter: 1 claim, $7K

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
🏷️ 10% off flood insurance. Nashua is in FEMA’s Community Rating System (class 8) for its flood-proofing work.
Insurance rates: Hillsborough County.
Disasters that hit Nashua

15 federal disasters brought FEMA money here

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

Brought FEMA money into NashuaDeclared for Hillsborough County only
2015

Severe Winter Storm and Snowstorm

$241K to the City of Nashua for repairs
2013

Severe Winter Storm and Snowstorm

$325K to the City of Nashua for repairs
2012

Hurricane Sandy

$68K to the City of Nashua for repairs
2011

Severe Storm and Snowstorm

$647K to the City of Nashua for repairs
2011

Hurricane Irene

$16K to the City of Nashua for repairs
2010

Severe Storms and Flooding

$7K to the City of Nashua for repairs
2010

Severe Winter Storm

$121K to the City of Nashua for repairs
2008

Severe Winter Storm

$225K to the City of Nashua for repairs
2007

Severe Storms and Flooding

23 households applied for aid $14K aid approved $15K to the City of Nashua for repairs
2006

Severe Storms and Flooding

86 households applied for aid $142K aid approved $42K to the City of Nashua for repairs
2005

Severe Storms and Flooding

2 households applied for aid $2K aid approved
2005

Record Snow

$108K to the City of Nashua for repairs
2005

Record And/Or Near Record Snow

$124K to the City of Nashua for repairs
2003

Snow

$241K to the City of Nashua for repairs
2001

Snow

$112K to the City of Nashua for repairs
Hillsborough County has had 26 natural disasters declared since 1953, most often severe storms and winter storms.
Around Nashua

Nashua and the towns around it

Merrimack: Moderate, mostly inland floodingHollis: Moderate, mostly inland floodingHudson: Moderate, mostly inland floodingDunstable: Very low, mostly inland floodingLitchfield: Moderate, mostly inland floodingAmherst: Moderate, mostly inland floodingBedford: Low, mostly inland floodingManchester: Moderate, mostly inland floodingMilford: Moderate, mostly inland floodingBrookline: Moderate, mostly inland floodingPepperell: Low, mostly inland floodingWindham: Low, mostly inland floodingPelham: High, mostly inland floodingLondonderry: Low, mostly inland floodingTyngsborough: Low, mostly inland floodingGroton: Very low, mostly inland floodingNashua: Moderate, mostly inland flooding NashuaMerrimackHollisHudsonDunstableLitchfield
Very lowLowModerateHighVery high
Merrimackmostly inland floodingModerate
Nashuamostly inland floodingModerate
Litchfieldmostly inland floodingModerate
Hudsonmostly inland floodingModerate
Hollismostly inland floodingModerate
Dunstablemostly 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. Nashua covers 20 census tracts, combined by population.
Money that reached townFlood claims are matched to Nashua’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Nashua. 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 Nashua total about $23.7M 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/18 · 2025-01-01
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