Augustus Lutheran Church · Public domainOn FEMA’s figures, few U.S. towns expect less hazard damage per building than Trappe, mostly from river and rain flooding
On FEMA’s National Risk Index, Trappe gets an A+ for hazard risk: among the lowest expected damage per building of U.S. towns, #27 of 1,037 in Pennsylvania. Most of that expected damage is river and rain flooding (72%). Flood insurance has paid 10 claims here since 1999.
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 stands out about Trappe’s natural hazards
From FEMA’s model and FEMA’s records, below.
What Trappe 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
Earthquakes
Hurricanes
Tornadoes
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 Trappe’s grade
River and rain flooding is 72% of the building damage FEMA expects in Trappe, and Trappe’s rate of river and rain flooding damage is lower than 94% of U.S. census tracts. Next is earthquakes at 10% (higher than 59% of U.S. census tracts).
A+ #27 of 1,037 in Pennsylvania; among the lowest expected damage per building of U.S. towns (21,298).
All of Trappe’s residents live in one census tract; the figures are that tract’s.
The typical Pennsylvania town has lower expected damage than 71% of U.S. towns; within the state, Trappe has less expected damage per building than 97% of Pennsylvania towns.
In dollars, FEMA expects about $949K a year in losses across Trappe: $598K to buildings, the rest to people and crops.
Does Trappe flood? Sometimes: 10 flood claims since 1999
Every paid claim on a federal flood insurance policy in Trappe, from FEMA’s records: 6.1 per 1,000 homes, more than 64% of the 13,809 U.S. towns with a flood insurance record.
- Hurricane Ida3 claims · $170K
- Hurricane Floyd2 claims · $20K
- Hurricane Irene1 claim · $38K
Trappe isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Montgomery County.2 federal disasters brought FEMA money to Trappe
Disasters that paid out in Trappe itself (aid to households or repair grants to the Borough of Trappe), newest first, with that year’s flood claims.
- 2021Remnants of Hurricane Ida8 households applied for aid$24K aid approved3 flood claims paid for it, $170K
- 2011Hurricane Irene3 households applied for aid$3K aid approved1 flood claim paid for it, $38K
Montgomery County has had 23 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 Trappe after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Trappe archive →Trappe and its neighbors
Trappe has the lowest expected damage per building of the 4 graded towns here. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Trappe | A+among the lowest damage | river and rain flooding | 10 |
| Collegeville | A−less damage than 79% | river and rain flooding | 135 |
| Perkiomen Township | B+less damage than 74% | river and rain flooding | 104 |
| Upper Providence Township | B+less damage than 71% | river and rain flooding | 418 |
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 Trappe 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.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- The season runs June through November and peaks from mid-August to mid-October.
- Bring in porch furniture and anything the wind can throw.
- Fill the gas tank and charge phones before the storm arrives.
- Pick your spot now: the lowest floor, an inside room, no windows.
- A watch means be ready; a warning means take cover now.
- Keep shoes and a flashlight by the bed.
- 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 Trappe
Is Trappe at risk for natural disasters?
On FEMA’s National Risk Index, Trappe has among the lowest expected damage per building of U.S. towns: A+ for hazard risk, #27 of 1,037 in Pennsylvania. Most of the expected damage is river and rain flooding (72%) and earthquakes (10%). 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 Trappe flood?
Flood insurance has paid 10 claims in Trappe since 1999, $306K in all, or 6.1 per 1,000 homes, more than 64% of U.S. towns with a flood insurance record. 1 properties have flooded more than once. The most claims came from Hurricane Ida (3).
Is Trappe 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 Montgomery County, 47% of homes in mapped flood zones carry federal flood insurance, and 0.9% of all homes do.
How much is flood insurance in Trappe?
FEMA’s Community Rating System list shows no discount for Trappe’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 Trappe?
By FEMA money that reached Trappe, Remnants of Hurricane Ida (2021): 8 households applied for aid, $24K approved. By flood claims, Hurricane Ida: 3 paid, $170K.
Is Trappe at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (72%), and Trappe’s rate for it is lower than 94% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Trappe.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Trappe’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.