Ashton-Hursh House · Photo: Smallbones · CC BY-SA 3.0On FEMA’s figures, Lower Allen Township faces less hazard damage per building than 67% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Lower Allen Township gets a B+ for hazard risk: lower expected damage per building than 67% of U.S. towns, #567 of 1,037 in Pennsylvania. Most of that expected damage is river and rain flooding (84%). Flood insurance has paid 87 claims here since 1978.
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 Lower Allen Township’s natural hazards
From FEMA’s model and FEMA’s records, below.
What Lower Allen 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
Hurricanes
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 Lower Allen Township’s grade
River and rain flooding is 84% of the building damage FEMA expects in Lower Allen Township, and Lower Allen Township’s rate of river and rain flooding damage is higher than 56% of U.S. census tracts. Next is hurricanes at 9% (higher than 78% of U.S. census tracts).
B+ #567 of 1,037 in Pennsylvania; lower expected damage per building than 67% of U.S. towns (21,298).
Lower Allen Township’s residents live in 5 census tracts; FEMA’s figures are combined by where they live.
The typical Pennsylvania town has lower expected damage than 71% of U.S. towns; within the state, Lower Allen Township has more expected damage per building than 55% of Pennsylvania towns.
In dollars, FEMA expects about $4.8M a year in losses across Lower Allen Township: $4.1M to buildings, the rest to people and crops.
Does Lower Allen Township flood? Sometimes: 87 flood claims since 1978
Every paid claim on a federal flood insurance policy in Lower Allen Township, from FEMA’s records: 11.0 per 1,000 homes, more than 76% of the 13,809 U.S. towns with a flood insurance record.
- Tropical Storm Bill2 claims · $29K
- Tropical Storm Lee1 claim · $5K
Lower Allen 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: Cumberland County.The storms Lower Allen Township remembers
None of the 15 disasters declared for Cumberland County shows FEMA aid or repair money reaching Lower Allen Township itself in FEMA’s records, so these are its biggest flood-claim years.
- 201130 flood claims paidThe year of Tropical Storm Lee, declared for Cumberland County
- 197916 flood claims paidNo declaration for the county that year
- 19968 flood claims paidThe year of Flooding Associated with Tropical Depression Fran, declared for Cumberland County
Cumberland 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 Lower Allen Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Lower Allen Township archive →Lower Allen Township and its neighbors
Lower Allen Township is 7th of the 9 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 |
|---|---|---|---|
| Shiremanstown | Aless damage than 94% | river and rain flooding | 1 |
| Camp Hill | Aless damage than 88% | river and rain flooding | 71 |
| Upper Allen Township | Aless damage than 88% | river and rain flooding | 34 |
| Mechanicsburg | A−less damage than 84% | river and rain flooding | 33 |
| Fairview Township | B+less damage than 74% | river and rain flooding | 125 |
| Hampden Township | B+less damage than 68% | river and rain flooding | 165 |
| Lower Allen Township | B+less damage than 67% | river and rain flooding | 87 |
| Lemoyne | Bless damage than 61% | river and rain flooding | 7 |
| New Cumberland | Dmore damage than 92% | river and rain flooding | 254 |
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 Lower Allen 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.
- 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.
- 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 Lower Allen Township
Is Lower Allen Township at risk for natural disasters?
On FEMA’s National Risk Index, Lower Allen Township has lower expected damage per building than 67% of U.S. towns: B+ for hazard risk, #567 of 1,037 in Pennsylvania. Most of the expected damage is river and rain flooding (84%) and hurricanes (9%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Lower Allen Township flood?
Flood insurance has paid 87 claims in Lower Allen Township since 1978, $1.3M in all, or 11.0 per 1,000 homes, more than 76% of U.S. towns with a flood insurance record. 9 properties have flooded more than once. The most claims came from Tropical Storm Bill (2).
Is Lower Allen 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 Cumberland County, 21% of homes in mapped flood zones carry federal flood insurance, and 0.7% of all homes do.
How much is flood insurance in Lower Allen Township?
FEMA’s Community Rating System list shows no discount for Lower Allen 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 Lower Allen Township?
By flood claims, Tropical Storm Bill: 2 paid, $29K.
Is Lower Allen Township at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (84%), and Lower Allen Township’s rate for it is higher than 56% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Lower Allen Township.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Lower Allen 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.