Photo: John Phelan · CC BY-SA 3.0FEMA expects less hazard damage per building in Windham than in 72% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Windham gets a B+ for hazard risk: lower expected damage per building than 72% of U.S. towns, #16 of 126 in New Hampshire. Most of that expected damage is river and rain flooding (82%). Flood insurance has paid 4 claims here since 1987.
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 Windham 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
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 Windham’s grade
River and rain flooding is 82% of the building damage FEMA expects in Windham, and Windham’s rate of river and rain flooding damage is lower than 50% of U.S. census tracts. Ice storms add 3%, at a rate in the top 8% of U.S. census tracts.
B+ #16 of 126 in New Hampshire; lower expected damage per building than 72% of U.S. towns (21,298).
Windham’s residents live in 2 census tracts; FEMA’s figures are combined by where they live.
The typical New Hampshire town has higher expected damage than 58% of U.S. towns; within the state, Windham has less expected damage per building than 88% of New Hampshire towns.
In dollars, FEMA expects about $3.8M a year in losses across Windham: $3.3M to buildings, the rest to people and crops.
Does Windham flood? Rarely: 4 flood claims since 1987
Every paid claim on a federal flood insurance policy in Windham, from FEMA’s records: 0.7 per 1,000 homes, fewer than 84% of the 13,809 U.S. towns with a flood insurance record.
Windham isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Rockingham County.15 federal disasters brought FEMA money to Windham
Disasters that paid out in Windham itself (aid to households or repair grants to the Town of Windham), newest first, with that year’s flood claims.
- 2018Severe Winter Storm and Snowstorm$37K to the Town of Windham for repairs
- 2018Severe Storm and Flooding$45K to the Town of Windham for repairs
- 2015Severe Winter Storm and Snowstorm$23K to the Town of Windham for repairs
- 2013Severe Winter Storm and Snowstorm$37K to the Town of Windham for repairs
- 2012Hurricane Sandy$10K to the Town of Windham for repairs
- 2011Severe Storm and Snowstorm$46K to the Town of Windham for repairs
Show all 15
- 2010Severe Storms and Flooding$7K to the Town of Windham for repairs
- 2010Severe Winter Storm$25K to the Town of Windham for repairs
- 2008Severe Winter Storm$106K to the Town of Windham for repairs
- 2007Severe Storms and Flooding4 households applied for aid$2K aid approved$5K to the Town of Windham for repairs1 flood claim paid that year
- 2006Severe Storms and Flooding78 households applied for aid$141K aid approved$9K to the Town of Windham for repairs1 flood claim paid that year
- 2005Record Snow$17K to the Town of Windham for repairs
- 2005Record And/or Near Record Snow$21K to the Town of Windham for repairs
- 2003Snow$15K to the Town of Windham for repairs
- 2001Snow$24K to the Town of Windham for repairs
Rockingham County has had 29 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 Windham after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Windham archive →Windham and its neighbors
Windham has the lowest expected damage per building of the 6 graded towns here. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Windham | B+less damage than 72% | river and rain flooding | 4 |
| Londonderry | Bless damage than 65% | river and rain flooding | 30 |
| Salem | Bless damage than 57% | river and rain flooding | 106 |
| Derry | Bless damage than 55% | river and rain flooding | 27 |
| Hudson | B−more damage than 52% | river and rain flooding | 9 |
| Pelham | Cmore damage than 68% | river and rain flooding | 24 |
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 Windham 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.
- 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 Windham
Is Windham at risk for natural disasters?
On FEMA’s National Risk Index, Windham has lower expected damage per building than 72% of U.S. towns: B+ for hazard risk, #16 of 126 in New Hampshire. Most of the expected damage is river and rain flooding (82%) and hurricanes (7%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Windham flood?
Flood insurance has paid 4 claims in Windham since 1987, $50K in all, or 0.7 per 1,000 homes, fewer than 84% of U.S. towns with a flood insurance record.
Is Windham 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 Rockingham County, 37% of homes in mapped flood zones carry federal flood insurance, and 2.2% of all homes do.
How much is flood insurance in Windham?
FEMA’s Community Rating System list shows no discount for Windham’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 Windham?
By FEMA money that reached Windham, Severe Storms and Flooding (2006): 78 households applied for aid, $141K approved, and $9K to the Town of Windham for repairs.
Is Windham at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (82%), and Windham’s rate for it is lower than 50% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Windham.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Windham’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.