John Baker Tavern · Photo: Wdzinc · CC BY-SA 3.0FEMA expects about as much hazard damage per building in Radnor Township as in the typical U.S. town, mostly from river and rain flooding
On FEMA’s National Risk Index, Radnor Township gets a B− for hazard risk: lower expected damage per building than 51% of U.S. towns. Most of that expected damage is river and rain flooding (81%). FEMA’s files show no paid flood insurance claims here.
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 Radnor 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
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 Radnor Township’s grade
River and rain flooding is 81% of the building damage FEMA expects in Radnor Township, and Radnor Township’s rate of river and rain flooding damage is higher than 65% of U.S. census tracts. Ice storms add 2%, at a rate in the top 10% of U.S. census tracts.
B− lower expected damage per building than 51% of U.S. towns (21,298).
Radnor Township’s residents live in 2 census tracts; FEMA’s figures are combined by where they live.
In dollars, FEMA expects about $651K a year in losses across Radnor Township: $575K to buildings, the rest to people and crops.
Does Radnor Township flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Radnor Township. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Radnor 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: Delaware County.1 federal disaster brought FEMA money to Radnor Township
Disasters that paid out in Radnor Township itself (aid to households or repair grants to Radnor Township), newest first, with that year’s flood claims.
- 2003Severe Winter Storm and Record/near Record Snow$989 to Radnor Township for repairs
Delaware County has had 12 natural disasters declared by the President since 1953, most often severe storms, then winter storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Old photos of Radnor Township after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Radnor Township archive →Radnor Township and its neighbors
Radnor Township is 2nd of the 4 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 |
|---|---|---|---|
| Troy Township | B−less damage than 53% | river and rain flooding | 2 |
| Radnor Township | B−less damage than 51% | river and rain flooding | 0 |
| Scioto Township | B−less damage than 51% | river and rain flooding | — |
| Prospect Township | Cmore damage than 73% | river and rain flooding | — |
| Thompson Township | — | 568 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 Radnor 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.
- 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 Radnor Township
Is Radnor Township at risk for natural disasters?
On FEMA’s National Risk Index, Radnor Township has lower expected damage per building than 51% of U.S. towns: B− for hazard risk. Most of the expected damage is river and rain flooding (81%) and tornadoes (9%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Is Radnor 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 Delaware County, 16% of homes in mapped flood zones carry federal flood insurance, and 0.3% of all homes do.
How much is flood insurance in Radnor Township?
FEMA’s Community Rating System list shows no discount for Radnor 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 Radnor Township?
By FEMA money that reached Radnor Township, Severe Winter Storm and Record/near Record Snow (2003): $989 to Radnor Township for repairs.
Is Radnor Township at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (81%), and Radnor Township’s rate for it is higher than 65% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Radnor Township.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Radnor 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.