Jesse Chew House · Photo: Ton2cats · CC BY-SA 3.0FEMA puts Mantua Township’s expected hazard damage per building below that of 90% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Mantua Township gets an A for hazard risk: lower expected damage per building than 90% of U.S. towns, #23 of 468 in New Jersey. Most of that expected damage is river and rain flooding (72%). Flood insurance has paid 18 claims here since 1978.
Graded on FEMA’s expected yearly building damage per dollar of building value (NRI v1.20, December 2025), weighted by where residents live; flood claims are shown, not graded. How hazard risk is graded
What Mantua Township faces
Each hazard’s share of the building damage FEMA expects here, and how its rate compares with the rest of the country.
River and rain flooding
Earthquakes
Strong wind
Hurricanes
Shares are of FEMA’s expected building damage, the measure the grade uses; ranks compare each hazard’s building-damage rate with all 85,154 U.S. census tracts. In FEMA’s terms, river and rain flooding is FEMA’s “Inland Flooding” (rivers and streams overflowing their banks, or rain overwhelming drainage). FEMA defines coastal flooding as high or rising tides and storm surge, so surge damage is counted there. Drought isn’t listed: FEMA counts its losses in crops only.
What’s behind Mantua Township’s grade
River and rain flooding is 72% of the building damage FEMA expects in Mantua Township, and Mantua Township’s rate of river and rain flooding damage is lower than 78% of U.S. census tracts. Strong wind adds 7%, at a rate in the top 10% of U.S. census tracts.
A #23 of 468 in New Jersey; lower expected damage per building than 90% of U.S. towns (21,298).
Mantua Township’s residents live in 4 census tracts; FEMA’s figures are combined by where they live.
The typical New Jersey town has higher expected damage than 56% of U.S. towns; within the state, Mantua Township has less expected damage per building than 95% of New Jersey towns.
In dollars, FEMA expects about $3.2M a year in losses across Mantua Township: $2.2M to buildings, the rest to people and crops.
Does Mantua Township flood? Sometimes: 18 flood claims since 1978
Every paid claim on a federal flood insurance policy in Mantua Township, from FEMA’s records: 2.9 per 1,000 homes, fewer than 53% of the 13,809 U.S. towns with a flood insurance record.
- Hurricane Irene4 claims · $51K
- Hurricane Floyd2 claims · $28K
- The March 2010 nor’easter1 claim · $3K
Mantua Township 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.9 federal disasters brought FEMA money to Mantua Township
Disasters that paid out in Mantua Township itself (aid to households or repair grants to Mantua Township), newest first, with that year’s flood claims.
- 2021Remnants of Hurricane Ida34 households applied for aid$2K aid approved$275K to Mantua Township for repairs
- 2015Severe Storm$210K to Mantua Township for repairs
- 2012Hurricane Sandy9 households applied for aid$22K aid approved$32K to Mantua Township for repairs
- 2011Hurricane Irene40 households applied for aid$50K aid approved4 flood claims paid for it, $51K
- 2010Severe Storms and Flooding6 households applied for aid$4K aid approved
- 2010Severe Winter Storm and Snowstorm$21K to Mantua Township for repairs
Show all 9
- 2009Snowstorm$23K to Mantua Township for repairs
- 2007Severe Storms and Inland and Coastal Flooding14 households applied for aid$6K aid approved1 flood claim paid that year
- 2005Severe Storms and Flooding5 households applied for aid$2K aid approved1 flood claim paid that year
Gloucester County has had 20 natural disasters declared by the President since 1953, most often severe storms, then winter storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees; the 2001 World Trade Center declarations.
Old photos of Mantua Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Mantua Township archive →Mantua Township and its neighbors
Mantua Township is 4th of the 8 graded towns here, from least expected damage per building to most. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Pitman | Aless damage than 95% | river and rain flooding | 1 |
| Washington Township | Aless damage than 94% | river and rain flooding | 190 |
| Deptford Township | Aless damage than 91% | river and rain flooding | 12 |
| Mantua Township | Aless damage than 90% | river and rain flooding | 18 |
| Harrison Township | Aless damage than 88% | river and rain flooding | 3 |
| Wenonah | Aless damage than 88% | river and rain flooding | — |
| East Greenwich Township | A−less damage than 76% | river and rain flooding | 8 |
| West Deptford Township | Bless damage than 63% | river and rain flooding | 103 |
| Sewell | — | a Census area inside a town; graded with the town | |
| Richwood | — | a Census area inside a town; graded with the town | |
Hazard risk = FEMA’s expected yearly building damage per dollar of building value, vs. the 21,298 U.S. towns we grade; the map is shaded by fifths of the same scale. Flood claims = paid federal flood insurance claims on record.
Get ready for what Mantua Township faces
A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.
- Turn around at flooded roads: a foot of moving water can carry off a car.
- Flood insurance usually takes 30 days to start, so buy it before the forecast.
- Keep papers and medicines up high, in a grab-and-go bag.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- Trim dead limbs over the house and driveway.
- Tie down trash cans and outdoor furniture.
- Stay clear of downed lines and call the utility.
- The season runs June through November and peaks from mid-August to mid-October.
- Bring in porch furniture and anything the wind can throw.
- Fill the gas tank and charge phones before the storm arrives.
- Look up the address on FEMA’s flood map.
- Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
- Get a flood insurance quote early: policies usually start 30 days after you buy.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Questions about natural hazards in Mantua Township
Is Mantua Township at risk for natural disasters?
On FEMA’s National Risk Index, Mantua Township has lower expected damage per building than 90% of U.S. towns: A for hazard risk, #23 of 468 in New Jersey. Most of the expected damage is river and rain flooding (72%) and earthquakes (8%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Mantua Township flood?
Flood insurance has paid 18 claims in Mantua Township since 1978, $342K in all, or 2.9 per 1,000 homes, fewer than 53% of U.S. towns with a flood insurance record. 6 properties have flooded more than once. The most claims came from Hurricane Irene (4).
Is Mantua Township in a flood zone?
Flood zones are drawn street by street, so the answer depends on the address: look it up on FEMA’s flood map. In Gloucester County, 50% of homes in mapped flood zones carry federal flood insurance, and 0.9% of all homes do.
How much is flood insurance in Mantua Township?
FEMA’s Community Rating System list shows no discount for Mantua Township’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
What was the biggest storm in Mantua Township?
By FEMA money that reached Mantua Township, Remnants of Hurricane Ida (2021): 34 households applied for aid, $2K approved, and $275K to Mantua Township for repairs. By flood claims, Hurricane Irene: 4 paid, $51K.
Is Mantua Township at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (72%), and Mantua Township’s rate for it is lower than 78% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Mantua Township.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Mantua Township’s residents lived in the 2020 census; 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. Homes: Census ACS 2020–24. Preparedness tips: Ready.gov. FEMA’s model is an average of expected damage, not a forecast. How hazard risk is graded.