Photo: Photo by Chuck Walsh. WallyFromColumbia at en.wikipedia · Public domainGreen Township’s building-damage rate from strong wind is in the top 1% of U.S. census tracts
On FEMA’s National Risk Index, Green Township gets a B for hazard risk: lower expected damage per building than 56% of U.S. towns, #170 of 468 in New Jersey. Most of that expected damage is river and rain flooding (71%), then strong wind (20%). Flood insurance has paid 2 claims here since 2011.
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 Green 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
Strong wind
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 Green Township’s grade
River and rain flooding is 71% of the building damage FEMA expects in Green Township, and Green Township’s rate of river and rain flooding damage is higher than 53% of U.S. census tracts. Strong wind adds 20%, at a rate in the top 1% of U.S. census tracts.
B #170 of 468 in New Jersey; lower expected damage per building than 56% of U.S. towns (21,298).
All of Green Township’s residents live in one census tract; the figures are that tract’s.
The typical New Jersey town has higher expected damage than 56% of U.S. towns; within the state, Green Township has less expected damage per building than 64% of New Jersey towns.
In dollars, FEMA expects about $1.8M a year in losses across Green Township: $1.2M to buildings, the rest to people and crops.
Does Green Township flood? Rarely: 2 flood claims since 2011
Every paid claim on a federal flood insurance policy in Green Township, from FEMA’s records: 1.6 per 1,000 homes, fewer than 68% of the 13,809 U.S. towns with a flood insurance record.
- Hurricane Ida1 claim · $10K
Green 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: Sussex County.6 federal disasters brought FEMA money to Green Township
Disasters that paid out in Green Township itself (aid to households or repair grants to Green Township), newest first, with that year’s flood claims.
- 2021Severe Winter Storm and Snowstorm$43K to Green Township for repairs1 flood claim paid that year
- 2012Hurricane Sandy$64K to Green Township for repairs
- 2011Severe Storm$24K to Green Township for repairs
- 2011Hurricane Irene$17K to Green Township for repairs
- 2004Severe Storms and Flooding$5K to Green Township for repairs
- 2000Severe Storms, Flooding and Mudslides$939 to Green Township for repairs
Sussex County has had 20 natural disasters declared by the President since 1953, most often severe storms, then hurricanes and tropical 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 Green Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Green Township archive →Green Township and its neighbors
Green Township is 5th of the 5 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 |
|---|---|---|---|
| Frelinghuysen Township | A−less damage than 80% | river and rain flooding | 2 |
| Fredon Township | A−less damage than 80% | river and rain flooding | 1 |
| Allamuchy Township | B+less damage than 68% | river and rain flooding | 1 |
| Andover Township | B+less damage than 68% | river and rain flooding | 1 |
| Green Township | Bless damage than 56% | river and rain flooding | 2 |
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 Green 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.
- Trim dead limbs over the house and driveway.
- Tie down trash cans and outdoor furniture.
- Stay clear of downed lines and call the utility.
- 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 Green Township
Is Green Township at risk for natural disasters?
On FEMA’s National Risk Index, Green Township has lower expected damage per building than 56% of U.S. towns: B for hazard risk, #170 of 468 in New Jersey. Most of the expected damage is river and rain flooding (71%) and strong wind (20%). The figures are for the one census tract the town shares with its neighbors. This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Green Township flood?
Flood insurance has paid 2 claims in Green Township since 2011, $22K in all, or 1.6 per 1,000 homes, fewer than 68% of U.S. towns with a flood insurance record. The most claims came from Hurricane Ida (1).
Is Green 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 Sussex County, 36% of homes in mapped flood zones carry federal flood insurance, and 0.3% of all homes do.
How much is flood insurance in Green Township?
FEMA’s Community Rating System list shows no discount for Green 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 Green Township?
By FEMA money that reached Green Township, Hurricane Sandy (2012): $64K to Green Township for repairs. By flood claims, Hurricane Ida: 1 paid, $10K.
Is Green Township at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (71%), and Green Township’s rate for it is higher than 53% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Green Township.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Green 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.