Photo: Ron Shawley · CC BY 3.0More hazard damage per building is expected in Duncansville than in 73% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Duncansville gets a C for hazard risk: higher expected damage per building than 73% of U.S. towns. Most of that expected damage is river and rain flooding (94%). Flood insurance has paid 44 claims here since 1979.
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 Duncansville 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 Duncansville’s grade
River and rain flooding is 94% of the building damage FEMA expects in Duncansville, and Duncansville’s rate of river and rain flooding damage is higher than 87% of U.S. census tracts.
C higher expected damage per building than 73% of U.S. towns (21,298).
All of Duncansville’s residents live in one census tract; the figures are that tract’s.
In dollars, FEMA expects about $841K a year in losses across Duncansville: $681K to buildings, the rest to people and crops.
Does Duncansville flood? Sometimes: 44 flood claims since 1979
Every paid claim on a federal flood insurance policy in Duncansville, from FEMA’s records: 77.9 per 1,000 homes, more than 95% of the 13,809 U.S. towns with a flood insurance record.
- Tropical Storm Ivan4 claims · $19K
- Hurricane Ida2 claims · $7K
Duncansville isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Blair County.3 federal disasters brought FEMA money to Duncansville
Disasters that paid out in Duncansville itself (aid to households or repair grants to the Borough of Duncansville), newest first, with that year’s flood claims.
- 2004Tropical Depression Ivan89 households applied for aid$230K aid approved4 flood claims paid for it, $19K
- 2004Severe Storms and Flooding Associated with Tropical Depression Frances84 households applied for aid$215K aid approved
- 2003Severe Storms, Tornadoes, and Flooding3 households applied for aid$9K aid approved1 flood claim paid that year
Blair County has had 15 natural disasters declared by the President since 1953, most often floods, then winter storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Old photos of Duncansville after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Duncansville archive →Duncansville and its neighbors
Duncansville is 3rd 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 |
|---|---|---|---|
| Allegheny Township | Aless damage than 92% | river and rain flooding | 86 |
| Blair Township | B+less damage than 65% | river and rain flooding | 54 |
| Duncansville | Cmore damage than 73% | river and rain flooding | 44 |
| Sunbrook | — | 440 residents; we grade 1,000+ | |
| Penn Farms | — | 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 Duncansville 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 Duncansville
Is Duncansville at risk for natural disasters?
On FEMA’s National Risk Index, Duncansville has higher expected damage per building than 73% of U.S. towns: C for hazard risk. Most of the expected damage is river and rain flooding (94%). 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 Duncansville flood?
Flood insurance has paid 44 claims in Duncansville since 1979, $433K in all, or 77.9 per 1,000 homes, more than 95% of U.S. towns with a flood insurance record. 8 properties have flooded more than once. The most claims came from Tropical Storm Ivan (4).
Is Duncansville 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 Blair County, 19% of homes in mapped flood zones carry federal flood insurance, and 1.1% of all homes do.
How much is flood insurance in Duncansville?
FEMA’s Community Rating System list shows no discount for Duncansville’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 Duncansville?
By FEMA money that reached Duncansville, Tropical Depression Ivan (2004): 89 households applied for aid, $230K approved. By flood claims, Tropical Storm Ivan: 4 paid, $19K.
Is Duncansville at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (94%), and Duncansville’s rate for it is higher than 87% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Duncansville.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Duncansville’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.