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RainbowFallPhoto: Redjockey · CC BY 3.0
C−Hazard risk
Natural hazards in Parsippany-Troy Hills Township · FEMA

FEMA expects more hazard damage per building in Parsippany-Troy Hills Township than in 77% of U.S. towns, mostly from river and rain flooding

On FEMA’s National Risk Index, Parsippany-Troy Hills Township gets a C− for hazard risk: higher expected damage per building than 77% of U.S. towns, #360 of 468 in New Jersey. Most of that expected damage is river and rain flooding (90%). Flood insurance has paid 542 claims here since 1978.

River and rain flooding 90%Earthquakes 4%Hurricanes 3%

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

more than 77%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade#360 of 468 in New Jersey
Hazard risk
C−#360 of 468
in New Jersey · higher than 77% of U.S. towns
Main hazard
River and rain flooding
90% of expected building damage
Flood claims
542
paid since 1978 · $13.8M
Flooded more than once
51
properties · 5 “severe repetitive loss”
Disasters paid out here
10
of 25 declared for Morris County

What stands out about Parsippany-Troy Hills Township’s natural hazards

From FEMA’s model and FEMA’s records, below.

542 paid flood claims since 1978$13.8M in all; 51 properties flooded more than once. More per home than 86% of U.S. towns.Moved out of harm’s way30 homes raised above flood level; 26 flood-prone properties bought out and cleared with FEMA grants.Remembers 2011235 flood claims were paid for 2011 alone, the most of any year.
By hazard

What Parsippany-Troy Hills 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

90%of expected building damage
Well above average · higher than 88% of U.S. census tracts
Recorded about 4 times a year in the area
Smaller shares here
 Earthquakes Hurricanes Tornadoes Strong wind Winter storms Lightning Hail Wildfire Ice storms Cold waves Heat waves Landslides
FEMA models no building damage here
Coastal floodingAvalanchesTsunamisVolcanic activity

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.

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.
Hazard risk grade

What’s behind Parsippany-Troy Hills Township’s grade

River and rain flooding is 90% of the building damage FEMA expects in Parsippany-Troy Hills Township, and Parsippany-Troy Hills Township’s rate of river and rain flooding damage is higher than 88% of U.S. census tracts.

Where Parsippany-Troy Hills Township sits
Parsippany-Troy Hills Township
Least damageMiddleMost damage

C− #360 of 468 in New Jersey; higher expected damage per building than 77% of U.S. towns (21,298).

Parsippany-Troy Hills Township’s residents live in 13 census tracts; FEMA’s figures are combined by where they live.

What drives the damage to buildings
River and rain flooding90%Earthquakes4%Hurricanes3%Everything else2%

The typical New Jersey town has higher expected damage than 56% of U.S. towns; within the state, Parsippany-Troy Hills Township has more expected damage per building than 77% of New Jersey towns.

In dollars, FEMA expects about $22.0M a year in losses across Parsippany-Troy Hills Township: $18.4M to buildings, the rest to people and crops.

A firm figure. It combines 13 census tracts by where Parsippany-Troy Hills Township’s residents live. FEMA’s model is an average year for today’s buildings, not a record: the claims and disasters below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Parsippany-Troy Hills Township flood? Yes: 542 flood claims since 1978

Every paid claim on a federal flood insurance policy in Parsippany-Troy Hills Township, from FEMA’s records: 22.9 per 1,000 homes, more than 86% of the 13,809 U.S. towns with a flood insurance record.

Paid flood claims, by year
1978: 9 claims1979: 96 claims1980: 4 claims1981: 5 claims1982: 2 claims1983: 34 claims1984: 104 claims1985: 1 claim1986: 1 claim1987: 0 claims1988: 0 claims1989: 1 claim1990: 1 claim1991: 0 claims1992: 1 claim1993: 0 claims1994: 3 claims1995: 0 claims1996: 4 claims1997: 0 claims1998: 0 claims1999: 9 claims2000: 2 claims2001: 0 claims2002: 0 claims2003: 0 claims2004: 1 claim2005: 2 claims2006: 2 claims2007: 4 claims2008: 1 claim2009: 0 claims2010: 5 claims2011: 235 claims2012: 1 claim2013: 1 claim2014: 0 claims2015: 0 claims2016: 0 claims2017: 0 claims2018: 0 claims2019: 0 claims2020: 0 claims2021: 6 claims2022: 0 claims2023: 4 claims2024: 2 claims2025: 0 claims2026: 1 claim197919842011
19782026
Biggest named events
  • Hurricane Irene228 claims · $11.9M
  • Hurricane Floyd9 claims · $70K
542
paid claims since 1978
$13.8M
paid to owners
51
homes flooded more than once
$26K
average claim
Homes that flooded again and again
FEMA “severe repetitive loss” (5)Flooded 2+ times
of all homes are insured
No community discount

Parsippany-Troy Hills 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: Morris County.
What’s been done with FEMA grants
30homes raised above flood level
26flood-prone properties bought out and cleared
Disasters

10 federal disasters brought FEMA money to Parsippany-Troy Hills Township

Disasters that paid out in Parsippany-Troy Hills Township itself (aid to households or repair grants to Parsippany-Troy Hills Township), newest first, with that year’s flood claims.

  1. 2021Remnants of Hurricane Ida$121K to Parsippany-Troy Hills Township for repairs5 flood claims paid for it, $227K
  2. 2021Severe Winter Storm and Snowstorm$367K to Parsippany-Troy Hills Township for repairs
  3. 2018Severe Winter Storm and Snowstorm$957K to Parsippany-Troy Hills Township for repairs
  4. 2016Severe Winter Storm and Snowstorm$195K to Parsippany-Troy Hills Township for repairs
  5. 2012Hurricane Sandy$1.1M to Parsippany-Troy Hills Township for repairs1 flood claim paid that year
  6. 2011Severe Storm$359K to Parsippany-Troy Hills Township for repairs
Show all 10
  1. 2011Hurricane Irene$1.2M to Parsippany-Troy Hills Township for repairs228 flood claims paid for it, $11.9M
  2. 2010Severe Winter Storm and Snowstorm$120K to Parsippany-Troy Hills Township for repairs
  3. 2010Severe Storms and Flooding$86K to Parsippany-Troy Hills Township for repairs
  4. 1999Hurricane Floyd Major Disaster Declarations$31K to Parsippany-Troy Hills Township for repairs9 flood claims paid for it, $70K
Disasters declared, by decade
Paid out in Parsippany-Troy Hills TownshipMorris County only

Morris County has had 25 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.

Were you here?

Old photos of Parsippany-Troy Hills Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.

Add to the Parsippany-Troy Hills Township archive →
Next door

Parsippany-Troy Hills Township and its neighbors

Parsippany-Troy Hills Township is 5th of the 8 graded towns here, from least expected damage per building to most. Tap a town to see its hazards.

Montville Township: hazard risk DPine Brook: not gradedLake Hiawatha: not gradedEast Hanover Township: hazard risk C−Boonton: hazard risk DMountain Lakes: hazard risk A−Morris Township: hazard risk BMorris Plains: hazard risk B+Hanover Township: hazard risk BParsippany: not gradedMontville TownshipPine BrookLake HiawathaEast Hanover TownshipBoontonMountain LakesMorris TownshipMorris PlainsHanover TownshipParsippanyParsippany-Troy Hills Township
Lowest fifthSecondMiddleFourthHighest fifth
TownHazard riskMostly (buildings)Flood claims
Mountain LakesA−less damage than 77%river and rain flooding4
Morris PlainsB+less damage than 72%river and rain flooding11
Hanover TownshipBless damage than 62%river and rain flooding72
Morris TownshipBless damage than 60%river and rain flooding58
Parsippany-Troy Hills TownshipC−more damage than 77%river and rain flooding542
East Hanover TownshipC−more damage than 77%river and rain flooding89
Montville TownshipDmore damage than 88%river and rain flooding104
BoontonDmore damage than 91%river and rain flooding9
Pine Brook—a Census area inside a town; graded with the town
Lake Hiawatha—a Census area inside a town; graded with the town
Parsippany—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.

Be ready

Get ready for what Parsippany-Troy Hills 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.

When the river rises
  • 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.
More from Ready.gov ↗
Before you buy or rent
  • 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.
When a storm is coming
Forecast and alertsWeather →911, the nearest ERSafety →

Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.

Questions about natural hazards in Parsippany-Troy Hills Township

Is Parsippany-Troy Hills Township at risk for natural disasters?

On FEMA’s National Risk Index, Parsippany-Troy Hills Township has higher expected damage per building than 77% of U.S. towns: C− for hazard risk, #360 of 468 in New Jersey. Most of the expected damage is river and rain flooding (90%). This is FEMA’s model of an average year for today’s buildings, not a forecast.

Does Parsippany-Troy Hills Township flood?

Flood insurance has paid 542 claims in Parsippany-Troy Hills Township since 1978, $13.8M in all, or 22.9 per 1,000 homes, more than 86% of U.S. towns with a flood insurance record. 51 properties have flooded more than once. The most claims came from Hurricane Irene (228).

Is Parsippany-Troy Hills 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 Morris County, 1.4% of all homes carry federal flood insurance.

How much is flood insurance in Parsippany-Troy Hills Township?

FEMA’s Community Rating System list shows no discount for Parsippany-Troy Hills 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 Parsippany-Troy Hills Township?

By FEMA money that reached Parsippany-Troy Hills Township, Hurricane Irene (2011): $1.2M to Parsippany-Troy Hills Township for repairs. By flood claims, Hurricane Irene: 228 paid, $11.9M.

Is Parsippany-Troy Hills Township at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (90%), and Parsippany-Troy Hills Township’s rate for it is higher than 88% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Parsippany-Troy Hills Township.

Town Square →
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Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Parsippany-Troy Hills 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.