Winthrop’s biggest natural hazard is inland flooding
Most of the natural-hazard damage FEMA expects in Winthrop comes from inland flooding, and overall the risk is moderate for a U.S. community.
What stands out about Winthrop’s weather risks
Read from FEMA’s records below. The page puts what stands out first.
Does Winthrop flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Winthrop. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Winthrop isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: St. Lawrence County.How exposed is Winthrop?
FEMA expects yearly storm and flood damage to homes and buildings here to be higher than in 50% of U.S. communities, mostly from inland flooding and cold waves.
Rated higher than 936 of the 1,524 New York towns we cover.
Winthrop is smaller than a census tract, so it shares the figures of the tract around its center.
What Winthrop faces
Each hazard’s share of the damage FEMA expects here, and how it compares with the rest of the country.
Inland flooding
Cold waves
Earthquakes
Federal disasters declared here
None of the disasters declared for St. Lawrence County shows FEMA aid or repair money reaching Winthrop itself in FEMA’s records.
St. Lawrence County has had 14 natural disasters declared since 1953, most often winter storms and hurricanes.
Get ready for what Winthrop actually faces
A short kit for its top hazards, 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.
- Let faucets drip so pipes don’t freeze.
- Know where your water shutoff is.
- Never heat the house with the oven or a grill.
- 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.
Winthrop and its neighbors
How storm and flood risk compares across the town line. Tap a town to see its hazards.
| Town | Rating | Mostly | Flood claims |
|---|---|---|---|
| Winthrop | Moderate | inland flooding | 0 |
| Brasher | Moderate | inland flooding | 4 |
Rating = expected yearly storm and flood damage as a share of what’s there, vs. U.S. communities. Flood claims = paid federal flood insurance claims on record.
Disasters here can come any time of year
The month each of St. Lawrence County’s 14 declared disasters began, since 1953.
What these numbers can and can’t tell you
- An average, not a forecast. FEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.
- Compared by rate. “Higher than N%” compares yearly damage as a share of what’s there, so a big city isn’t rated riskier just for having more buildings.
- Money that reached town. Flood claims are matched to Winthrop’s own flood-insurance community; household aid to the registrant’s city; repair grants to Winthrop.
- It follows property value. FEMA’s model weighs damage to buildings, so a place that recently lost many homes can rate lower than it feels.
Storm stories
Memories, warnings and help from neighbors in Winthrop.
Your answer becomes a post in Town Square.
Sources: FEMA National Risk Index (December 2025); 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. Census tracts: U.S. Census Bureau. Weather alerts: National Weather Service. Preparedness tips: Ready.gov. An average of past damage, not a forecast.