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Aleppo Township municipal buildingPhoto: Nyttend · Public domain
C+Hazard risk
Natural hazards in Aleppo Township · FEMA

On FEMA’s figures, Aleppo Township faces about as much hazard damage per building as the typical U.S. town, mostly from river and rain flooding

On FEMA’s National Risk Index, Aleppo Township gets a C+ for hazard risk: higher expected damage per building than 56% of U.S. towns. Most of that expected damage is river and rain flooding (97%). Flood insurance has paid 6 claims here since 2003.

River and rain flooding 97%Tornadoes 2%

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 56%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade
Hazard risk
C+
in Pennsylvania · higher than 56% of U.S. towns
Main hazard
River and rain flooding
97% of expected building damage
Flood claims
6
paid since 2003 · $103K
Flooded more than once
2
properties
Flood claims per home
6 per 1,000
more than 63% of U.S. towns
By hazard

What Aleppo 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

97%of expected building damage
Above average · higher than 79% of U.S. census tracts
Recorded about 7 times a year in the area
Smaller shares here
 Tornadoes Earthquakes Strong wind Hurricanes Winter storms Hail Wildfire Ice storms Cold waves Heat waves Landslides Lightning
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 Aleppo Township’s grade

River and rain flooding is 97% of the building damage FEMA expects in Aleppo Township, and Aleppo Township’s rate of river and rain flooding damage is higher than 79% of U.S. census tracts.

Where Aleppo Township sits
Aleppo Township
Least damageMiddleMost damage

C+ higher expected damage per building than 56% of U.S. towns (21,298).

All of Aleppo Township’s residents live in one census tract; the figures are that tract’s.

What drives the damage to buildings
River and rain flooding97%Everything else3%

In dollars, FEMA expects about $758K a year in losses across Aleppo Township: $635K to buildings, the rest to people and crops.

Shared tract.All of Aleppo Township’s 1,825 residents (2020 census) live in one census tract, which it shares with Kilbuck township (773 residents) and Glen Osborne borough (590 residents) and Ben Avon Heights borough (400 residents) and Glenfield borough (212 residents) and Haysville borough (81 residents). FEMA publishes its model by tract, so the rate and the hazard mix are the tract’s, the same for all of them. The flood claims below are the township’s own.
A shared figure. The grade describes the whole tract, not each street in it, and FEMA’s model is an average year for today’s buildings, not a record: the claims below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Aleppo Township flood? Rarely: 6 flood claims since 2003

Every paid claim on a federal flood insurance policy in Aleppo Township, from FEMA’s records: 5.6 per 1,000 homes, more than 63% of the 13,809 U.S. towns with a flood insurance record.

Paid flood claims, by year
2003: 1 claim2004: 1 claim2005: 0 claims2006: 0 claims2007: 0 claims2008: 0 claims2009: 0 claims2010: 0 claims2011: 0 claims2012: 0 claims2013: 0 claims2014: 0 claims2015: 0 claims2016: 0 claims2017: 1 claim2018: 0 claims2019: 1 claim2020: 0 claims2021: 0 claims2022: 0 claims2023: 0 claims2024: 1 claim2025: 0 claims2026: 1 claim200320042017
20032026
Biggest named events
  • Tropical Storm Ivan1 claim · $14K
6
paid claims since 2003
$103K
paid to owners
2
homes flooded more than once
$17K
average claim
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

Aleppo 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: Allegheny County.
Disasters

The storms Aleppo Township remembers

None of the 15 disasters declared for Allegheny County shows FEMA aid or repair money reaching Aleppo Township itself in FEMA’s records, so these are its biggest flood-claim years.

  1. 20031 flood claims paidNo declaration for the county that year
  2. 20041 flood claims paidThe year of Tropical Depression Ivan, declared for Allegheny County
  3. 20171 flood claims paidNo declaration for the county that year
Disasters declared, by decade
Paid out in Aleppo TownshipAllegheny County only

Allegheny County has had 15 natural disasters declared by the President since 1953, most often severe storms, then floods. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.

Were you here?

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

Add to the Aleppo Township archive →
Next door

Aleppo Township and its neighbors

Aleppo Township has the lowest expected damage per building of the 2 graded towns here. Tap a town to see its hazards.

Sewickley Heights: not gradedHaysville: not gradedSewickley: hazard risk CGlenfield: not gradedGlen Osborne: not gradedKilbuck Township: not gradedSewickley Hills: not gradedSewickley HeightsHaysvilleSewickleyGlenfieldGlen OsborneKilbuck TownshipSewickley HillsAleppo Township
Lowest fifthSecondMiddleFourthHighest fifth
TownHazard riskMostly (buildings)Flood claims
Aleppo TownshipC+more damage than 56%river and rain flooding6
SewickleyCmore damage than 72%river and rain flooding13
Sewickley Heights—690 residents; we grade 1,000+
Haysville—99 residents; we grade 1,000+
Glenfield—199 residents; we grade 1,000+
Glen Osborne—585 residents; we grade 1,000+
Kilbuck Township—704 residents; we grade 1,000+
Sewickley Hills—672 residents; we grade 1,000+

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 Aleppo 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 Aleppo Township

Is Aleppo Township at risk for natural disasters?

On FEMA’s National Risk Index, Aleppo Township has higher expected damage per building than 56% of U.S. towns: C+ for hazard risk. Most of the expected damage is river and rain flooding (97%). 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 Aleppo Township flood?

Flood insurance has paid 6 claims in Aleppo Township since 2003, $103K in all, or 5.6 per 1,000 homes, more than 63% of U.S. towns with a flood insurance record. 2 properties have flooded more than once. The most claims came from Tropical Storm Ivan (1).

Is Aleppo 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 Allegheny County, 28% of homes in mapped flood zones carry federal flood insurance, and 0.4% of all homes do.

How much is flood insurance in Aleppo Township?

FEMA’s Community Rating System list shows no discount for Aleppo 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 Aleppo Township?

By flood claims, Tropical Storm Ivan: 1 paid, $14K.

Is Aleppo Township at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (97%), and Aleppo Township’s rate for it is higher than 79% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Aleppo Township.

Town Square →
Start the conversation

Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Aleppo 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.