ResourcesSuffolk County
Water risk resources for Suffolk County
Built from the county's and FEMA's public map and claims data, area by area, with an address check for one house.
Check an address
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Check an address in Suffolk County
What the county and FEMA maps show at one address: flood zone, ground height, groundwater depth, sewer main and surge zone.
Guides
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Flood zones and flood insurance by area
How much of each area is in FEMA's flood zone, the ZIP's flood insurance claims since 1978, and what the zone means for a mortgage.
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Checking water risk before you buy a house
What to look up about a house before you buy, what the public maps miss, and what to ask the seller and the inspector.
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Cesspools by area: what the sewer map shows
How many addresses in each area have no sewer main mapped past them, where that count can be trusted, and who handles what when sewage comes back up.
How we measure
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How we measure this data
How each figure on the area pages is derived, and what it can and cannot tell you.
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Data sources and known limits
Every public dataset behind the Suffolk County figures, its date, and where it stops.
Who to call for water damage in Suffolk County
(631) 440-4144Tell us what is happening. We connect you with a local specialist who covers your part of Suffolk County.