Marcus Hook Range Rear Light · Photo: United States Coast Guard · Public domainFEMA expects less hazard damage per building in Edgemoor than in 68% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Edgemoor gets a B+ for hazard risk: lower expected damage per building than 68% of U.S. towns, #18 of 37 in Delaware. Most of that expected damage is river and rain flooding (84%). 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 Edgemoor 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
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 Edgemoor’s grade
River and rain flooding is 84% of the building damage FEMA expects in Edgemoor, and Edgemoor’s rate of river and rain flooding damage is higher than 55% of U.S. census tracts. Coastal flooding adds 1%, at a rate in the top 6% of U.S. census tracts.
B+ #18 of 37 in Delaware; lower expected damage per building than 68% of U.S. towns (21,298).
Edgemoor’s residents live in 3 census tracts; FEMA’s figures are combined by where they live.
The typical Delaware town has lower expected damage than 65% of U.S. towns; within the state, Edgemoor has less expected damage per building than 53% of Delaware towns.
In dollars, FEMA expects about $1.7M a year in losses across Edgemoor: $1.4M to buildings, the rest to people and crops.
Does Edgemoor flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Edgemoor. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Edgemoor isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: New Castle County.The storms Edgemoor remembers
None of the 13 disasters declared for New Castle County shows FEMA aid or repair money reaching Edgemoor itself in FEMA’s records, so these are its biggest flood-claim years.
New Castle County has had 13 natural disasters declared by the President since 1953, most often hurricanes and tropical storms, then winter storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Edgemoor and its neighbors
Edgemoor is 2nd 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 |
|---|---|---|---|
| Bellefonte | A+less damage than 95% | river and rain flooding | — |
| Edgemoor | B+less damage than 68% | river and rain flooding | 0 |
| Wilmington | Cmore damage than 74% | river and rain flooding | 202 |
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 Edgemoor 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.
- 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 Edgemoor
Is Edgemoor at risk for natural disasters?
On FEMA’s National Risk Index, Edgemoor has lower expected damage per building than 68% of U.S. towns: B+ for hazard risk, #18 of 37 in Delaware. Most of the expected damage is river and rain flooding (84%) and earthquakes (5%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Is Edgemoor 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 New Castle County, 45% of homes in mapped flood zones carry federal flood insurance, and 0.9% of all homes do.
How much is flood insurance in Edgemoor?
FEMA’s Community Rating System list shows no discount for Edgemoor’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Edgemoor at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (84%), and Edgemoor’s rate for it is higher than 55% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Edgemoor.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Edgemoor’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.