Photo: Plazak · CC BY-SA 3.0FEMA expects more hazard damage per building in Cornplanter Township than in 77% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Cornplanter Township gets a C− for hazard risk: higher expected damage per building than 77% of U.S. towns. Most of that expected damage is river and rain flooding (95%). Flood insurance has paid 10 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 Cornplanter 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 Cornplanter Township’s grade
River and rain flooding is 95% of the building damage FEMA expects in Cornplanter Township, and Cornplanter Township’s rate of river and rain flooding damage is higher than 89% of U.S. census tracts.
C− higher expected damage per building than 77% of U.S. towns (21,298).
All of Cornplanter Township’s residents live in one census tract; the figures are that tract’s.
In dollars, FEMA expects about $1,000K a year in losses across Cornplanter Township: $927K to buildings, the rest to people and crops.
Does Cornplanter Township flood? Sometimes: 10 flood claims since 1978
Every paid claim on a federal flood insurance policy in Cornplanter Township, from FEMA’s records: 9.3 per 1,000 homes, more than 73% of the 13,809 U.S. towns with a flood insurance record.
Cornplanter 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: Venango County.The storms Cornplanter Township remembers
None of the 12 disasters declared for Venango County shows FEMA aid or repair money reaching Cornplanter Township itself in FEMA’s records, so these are its biggest flood-claim years.
- 19814 flood claims paidThe year of Severe Storms and Flooding, declared for Venango County
- 19824 flood claims paidNo declaration for the county that year
- 19781 flood claims paidNo declaration for the county that year
Venango County has had 12 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 Cornplanter Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Cornplanter Township archive →Cornplanter Township and its neighbors
Cornplanter Township is 6th of the 6 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 |
|---|---|---|---|
| Cherrytree Township | A+less damage than 95% | river and rain flooding | 3 |
| Cranberry Township | Aless damage than 91% | river and rain flooding | 28 |
| Sugarcreek | Bless damage than 64% | river and rain flooding | 43 |
| Oil City | B−more damage than 54% | river and rain flooding | 185 |
| Oakland Township | C+more damage than 60% | river and rain flooding | — |
| Cornplanter Township | C−more damage than 77% | river and rain flooding | 10 |
| President Township | — | 495 residents; we grade 1,000+ | |
| Hasson Heights | — | a Census area inside a town; graded with the town | |
| Oil Creek Township | — | 638 residents; we grade 1,000+ | |
| Allegheny Township | — | 308 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.
Get ready for what Cornplanter 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 Cornplanter Township
Is Cornplanter Township at risk for natural disasters?
On FEMA’s National Risk Index, Cornplanter Township has higher expected damage per building than 77% of U.S. towns: C− for hazard risk. Most of the expected damage is river and rain flooding (95%). 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 Cornplanter Township flood?
Flood insurance has paid 10 claims in Cornplanter Township since 1978, $174K in all, or 9.3 per 1,000 homes, more than 73% of U.S. towns with a flood insurance record.
Is Cornplanter 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 Venango County, 9% of homes in mapped flood zones carry federal flood insurance, and 0.4% of all homes do.
How much is flood insurance in Cornplanter Township?
FEMA’s Community Rating System list shows no discount for Cornplanter Township’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Cornplanter Township at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (95%), and Cornplanter Township’s rate for it is higher than 89% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Cornplanter Township.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Cornplanter 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.