Photo: Nyttend · Public domainFEMA expects more hazard damage per building in Crescent Township than in 70% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Crescent Township gets a C for hazard risk: higher expected damage per building than 70% of U.S. towns. Most of that expected damage is river and rain flooding (97%). Flood insurance has paid 1 claim here since 2004.
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 Crescent 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
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 Crescent Township’s grade
River and rain flooding is 97% of the building damage FEMA expects in Crescent Township, and Crescent Township’s rate of river and rain flooding damage is higher than 86% of U.S. census tracts.
C higher expected damage per building than 70% of U.S. towns (21,298).
All of Crescent Township’s residents live in one census tract; the figures are that tract’s.
In dollars, FEMA expects about $857K a year in losses across Crescent Township: $733K to buildings, the rest to people and crops.
Does Crescent Township flood? Rarely: 1 flood claim since 2004
Every paid claim on a federal flood insurance policy in Crescent Township, from FEMA’s records: 0.9 per 1,000 homes, fewer than 81% of the 13,809 U.S. towns with a flood insurance record.
- Tropical Storm Ivan1 claim · $487
Crescent 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.1 federal disaster brought FEMA money to Crescent Township
Disasters that paid out in Crescent Township itself (aid to households or repair grants to Crescent Township), newest first, with that year’s flood claims.
- 2004Tropical Depression Ivan13 households applied for aid$28K aid approved1 flood claim paid for it, $487
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.
Old photos of Crescent Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Crescent Township archive →Crescent Township and its neighbors
Crescent Township is 2nd of the 3 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 |
|---|---|---|---|
| Moon Township | Aless damage than 91% | river and rain flooding | 19 |
| Crescent Township | Cmore damage than 70% | river and rain flooding | 1 |
| Leetsdale | C−more damage than 83% | river and rain flooding | 4 |
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 Crescent 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.
- 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 Crescent Township
Is Crescent Township at risk for natural disasters?
On FEMA’s National Risk Index, Crescent Township has higher expected damage per building than 70% 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 Crescent Township flood?
Flood insurance has paid 1 claim in Crescent Township since 2004, $487 in all, or 0.9 per 1,000 homes, fewer than 81% of U.S. towns with a flood insurance record. The most claims came from Tropical Storm Ivan (1).
Is Crescent 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 Crescent Township?
FEMA’s Community Rating System list shows no discount for Crescent 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 Crescent Township?
By FEMA money that reached Crescent Township, Tropical Depression Ivan (2004): 13 households applied for aid, $28K approved. By flood claims, Tropical Storm Ivan: 1 paid, $487.
Is Crescent Township at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (97%), and Crescent Township’s rate for it is higher than 86% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Crescent Township.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Crescent 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.