Photo: John Phelan · CC BY-SA 4.0FEMA expects more hazard damage per building in Andover than in 64% of U.S. towns, mostly from river and rain flooding
On FEMA’s National Risk Index, Andover gets a C+ for hazard risk: higher expected damage per building than 64% of U.S. towns, #87 of 155 in Connecticut. Most of that expected damage is river and rain flooding (90%). Flood insurance has paid 2 claims here since 1979.
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 Andover 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 Andover’s grade
River and rain flooding is 90% of the building damage FEMA expects in Andover, and Andover’s rate of river and rain flooding damage is higher than 80% of U.S. census tracts. Next is hurricanes at 5% (higher than 73% of U.S. census tracts).
C+ #87 of 155 in Connecticut; higher expected damage per building than 64% of U.S. towns (21,298).
All of Andover’s residents live in one census tract; the figures are that tract’s.
The typical Connecticut town has higher expected damage than 62% of U.S. towns; within the state, Andover has more expected damage per building than 56% of Connecticut towns.
In dollars, FEMA expects about $981K a year in losses across Andover: $887K to buildings, the rest to people and crops.
Does Andover flood? Rarely: 2 flood claims since 1979
Every paid claim on a federal flood insurance policy in Andover, from FEMA’s records: 1.6 per 1,000 homes, fewer than 67% of the 13,809 U.S. towns with a flood insurance record.
Andover isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: the county.Andover and its neighbors
Andover is 5th of the 5 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 |
|---|---|---|---|
| Hebron | A−less damage than 82% | river and rain flooding | 1 |
| Bolton | A−less damage than 80% | river and rain flooding | 1 |
| Columbia | Bless damage than 61% | river and rain flooding | 8 |
| Coventry | Bless damage than 55% | river and rain flooding | 7 |
| Andover | C+more damage than 64% | river and rain flooding | 2 |
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 Andover 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 Andover
Is Andover at risk for natural disasters?
On FEMA’s National Risk Index, Andover has higher expected damage per building than 64% of U.S. towns: C+ for hazard risk, #87 of 155 in Connecticut. Most of the expected damage is river and rain flooding (90%) and hurricanes (5%). 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 Andover flood?
Flood insurance has paid 2 claims in Andover since 1979, $5K in all, or 1.6 per 1,000 homes, fewer than 67% of U.S. towns with a flood insurance record.
Is Andover 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 the county, 32% of homes in mapped flood zones carry federal flood insurance, and 0.5% of all homes do.
How much is flood insurance in Andover?
FEMA’s Community Rating System list shows no discount for Andover’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
Is Andover at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (90%), and Andover’s rate for it is higher than 80% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Andover.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Andover’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.