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Natural hazards · Mantua

Mantua, NJ natural hazards

Most of the natural-hazard damage FEMA expects in Mantua comes from inland flooding, and overall the risk is very low for a U.S. community. Flood insurance has paid 18 claims here since 1978. 9 federal disasters brought FEMA money into town.

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

How exposed is Mantua?

13
Very low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Mantua to be higher than in 13% of U.S. communities, mostly from inland flooding.

Inland flooding51%Heat waves9%Strong wind7%Earthquakes7%Cold waves7%Hurricanes5%Everything else14%
By hazard

What Mantua faces

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

Inland flooding

51% of expected damage
Well below average · higher than 22% of U.S. places
Recorded about 3 times a year in the area

Heat waves

9% of expected damage
Well below average · higher than 6% of U.S. places
Recorded about 11 times a year in the area

Strong wind

7% of expected damage
Well above average · higher than 90% of U.S. places
Recorded about 6 times a year in the area

Earthquakes

7% of expected damage
Above average · higher than 63% of U.S. places

Cold waves

7% of expected damage
Below average · higher than 40% of U.S. places
Recorded about once a year in the area

Hurricanes

5% of expected damage
Above average · higher than 66% of U.S. places
Recorded about once every 11 years in the area

Lower here

Coastal floodingHailIce stormsWinter weatherWildfireLandslidesLightningDrought

Not a risk here

AvalanchesTsunamisVolcanic 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 Mantua flood?

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

18paid claims since 1978
$342Kpaid to owners
6homes flooded more than once
19782026

Biggest named events

  • Hurricane Irene: 4 claims, $51K
  • Hurricane Floyd: 2 claims, $28K
  • March 2010 Nor'easter: 1 claim, $3K

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. Mantua isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Gloucester County.
Disasters that hit Mantua

9 federal disasters brought FEMA money here

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

Brought FEMA money into MantuaDeclared for Gloucester County only
2021

Remnants of Hurricane Ida

34 households applied for aid $2K aid approved $275K to the Township of Mantua for repairs
2015

Severe Storm

$210K to the Township of Mantua for repairs
2012

Hurricane Sandy

9 households applied for aid $22K aid approved $32K to the Township of Mantua for repairs
2011

Hurricane Irene

40 households applied for aid $50K aid approved
2010

Severe Storms and Flooding

6 households applied for aid $4K aid approved
2010

Severe Winter Storm and Snowstorm

$21K to the Township of Mantua for repairs
2009

Snowstorm

$23K to the Township of Mantua for repairs
2007

Severe Storms and Inland and Coastal Flooding

14 households applied for aid $6K aid approved
2005

Severe Storms and Flooding

5 households applied for aid $2K aid approved
Gloucester County has had 22 natural disasters declared since 1953, most often hurricanes and severe storms.
Around Mantua

Mantua and the towns around it

Washington: Very low, mostly inland floodingDeptford: Very low, mostly inland floodingWest Deptford: Low, mostly inland floodingWenonah: Very low, mostly inland floodingPitman: Very low, mostly inland floodingHarrison: Very low, mostly inland floodingEast Greenwich: Low, mostly inland floodingGloucester: Very low, mostly inland floodingGlassboro: Very low, mostly inland floodingMonroe: Very low, mostly inland floodingWoodbury Heights: Very low, mostly inland floodingRunnemede: Very low, mostly inland floodingBellmawr: Low, mostly inland floodingWoodbury: Low, mostly inland floodingWestville: High, mostly inland floodingPaulsboro: High, mostly inland floodingNational Park: Very high, mostly inland floodingPhiladelphia: Moderate, mostly inland floodingTinicum: Moderate, mostly inland floodingElk: Very low, mostly inland floodingWoolwich: Very low, mostly inland floodingSouth Harrison: Very low, mostly inland floodingGreenwich: Very high, mostly inland floodingMantua: Very low, mostly inland flooding MantuaWashingtonDeptfordWest DeptfordWenonahPitmanHarrisonEast Greenwich
Very lowLowModerateHighVery high
West Deptfordmostly inland floodingLow
East Greenwichmostly inland floodingLow
Wenonahmostly inland floodingVery low
Harrisonmostly inland floodingVery low
Mantuamostly inland floodingVery low
Deptfordmostly inland floodingVery low
Washingtonmostly inland floodingVery low
Pitmanmostly 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. Mantua covers 4 census tracts, combined by population.
Money that reached townFlood claims are matched to Mantua’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Mantua. 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 Mantua total about $3.2M 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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