Photo: Quintin Soloviev · CC BY 4.0Storms, floods and disasters in Water Mill
Water Mill isn’t graded for hazard risk: Water Mill is a Census area inside a town, graded with the town. Flood insurance has paid 24 claims here since 2005.
What Water Mill 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.
Does Water Mill flood? Sometimes: 24 flood claims since 2005
Every paid claim on a federal flood insurance policy in Water Mill, from FEMA’s records.
- Hurricane Sandy10 claims · $494K
- The March 2010 nor’easter3 claims · $15K
- The December nor’easter1 claim · $13K
Water Mill isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Suffolk County.The storms Water Mill remembers
None of the 26 disasters declared for Suffolk County shows FEMA aid or repair money reaching Water Mill itself in FEMA’s records, so these are its biggest flood-claim years.
- 201210 flood claims paidThe year of Hurricane Sandy, declared for Suffolk County
- 20235 flood claims paidNo declaration for the county that year
- 20103 flood claims paidThe year of Severe Winter Storm and Snowstorm, declared for Suffolk County
Suffolk County has had 26 natural disasters declared by the President since 1953, most often severe storms, then hurricanes and tropical storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees; the 2001 World Trade Center declarations.
Old photos of Water Mill after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Water Mill archive →Water Mill and its neighbors
How expected damage per building compares across the town line. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Southampton | A+less damage than 96% | river and rain flooding | 144 |
| Bridgehampton | — | a Census area inside a town; graded with the town | |
| North Sea | — | a Census area inside a town; graded with the town | |
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 Water Mill 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 Water Mill
Does Water Mill flood?
Flood insurance has paid 24 claims in Water Mill since 2005, $606K in all. The most claims came from Hurricane Sandy (10).
Is Water Mill 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 Suffolk County, 66% of homes in mapped flood zones carry federal flood insurance, and 5.4% of all homes do.
How much is flood insurance in Water Mill?
FEMA’s Community Rating System list shows no discount for Water Mill’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 Water Mill?
By flood claims, Hurricane Sandy: 10 paid, $494K.
Storm stories
Memories, warnings and help from neighbors in Water Mill.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Water Mill’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.