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Natural hazards · Mason

Mason, NH natural hazards

Most of the natural-hazard damage FEMA expects in Mason comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 1 claim here since 2011. 13 federal disasters brought FEMA money into town.

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

How exposed is Mason?

27
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Mason to be higher than in 27% of U.S. communities, mostly from inland flooding and hurricanes.

Inland flooding54%Hurricanes17%Tornadoes9%Everything else20%
By hazard

What Mason faces

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

Inland flooding

54% of expected damage
Below average · higher than 31% of U.S. places
Recorded about 2 times a year in the area

Hurricanes

17% of expected damage
Well above average · higher than 83% of U.S. places
Recorded about once every 9 years in the area

Tornadoes

9% of expected damage
Above average · higher than 53% of U.S. places

Lower here

HailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong 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 Mason flood?

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

1paid claims since 2011
$8Kpaid to owners
0homes flooded more than once
20112026
of homes in flood zones
are insured
of all homes
are insured
No community discount. Mason 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 Mason

13 federal disasters brought FEMA money here

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

Brought FEMA money into MasonDeclared for Hillsborough County only
2015

Severe Winter Storm and Snowstorm

$11K to the Town of Mason for repairs
2013

Severe Winter Storm and Snowstorm

$14K to the Town of Mason for repairs
2011

Severe Storm and Snowstorm

$11K to the Town of Mason for repairs
2011

Hurricane Irene

$2K to the Town of Mason for repairs
2010

Severe Storms and Flooding

$3K to the Town of Mason for repairs
2010

Severe Winter Storm

$10K to the Town of Mason for repairs
2008

Severe Winter Storm

$71K to the Town of Mason for repairs
2007

Severe Storms and Flooding

3 households applied for aid $741 aid approved $59K to the Town of Mason for repairs
2006

Severe Storms and Flooding

1 household applied for aid
2005

Record Snow

$4K to the Town of Mason for repairs
2005

Record And/Or Near Record Snow

$6K to the Town of Mason for repairs
2003

Snow

$11K to the Town of Mason for repairs
2001

Snow

$4K to the Town of Mason for repairs
Hillsborough County has had 26 natural disasters declared since 1953, most often severe storms and winter storms.
Around Mason

Mason and the towns around it

Greenville: Moderate, mostly inland floodingBrookline: Moderate, mostly inland floodingNew Ipswich: Moderate, mostly inland floodingWilton: High, mostly inland floodingHollis: Moderate, mostly inland floodingMilford: Moderate, mostly inland floodingTownsend: Low, mostly inland floodingRindge: Low, mostly inland floodingTemple: Low, mostly inland floodingLyndeborough: Moderate, mostly inland floodingMason: Low, mostly inland flooding MasonGreenvilleBrooklineNew IpswichWilton
Very lowLowModerateHighVery high
Wiltonmostly inland floodingHigh
Brooklinemostly inland floodingModerate
Greenvillemostly inland floodingModerate
New Ipswichmostly inland floodingModerate
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. Mason covers 1 census tract, combined by population.
Money that reached townFlood claims are matched to Mason’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Mason. 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 Mason total about $346K 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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