Area guideOakdale

Water Damage Restoration Help in Oakdale, NY

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The hamlet of Oakdale · Town of Islip

Water in the basement, a burst pipe, or sewage backing up into the house? Call and we'll connect you with a local specialist who covers Oakdale, even if you don't know the cause yet.

Water doesn't stay where it lands. It soaks into drywall, insulation and flooring, and mold can start within 24 to 48 hours.

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Since 1978, federal flood insurance has paid $38.3 million on 806 claims in ZIP 11769, which takes in Oakdale, so water has reached homes here before.

Oakdale at a glanceTap a figure to see it on the map

Flood risk: Very High

Flood zone. 546 of the 3,249 addresses here are inside FEMA's mapped flood zone. 491 more are within about 100 ft of its edge.

If your home is in it, most mortgage lenders must require flood insurance. That is a separate policy from homeowner's insurance, which usually covers a burst pipe or leaking appliance.

Look up your street

The percentage above counts all developed land, including lawns, parks and roads, not just homes.

Each square is about 350 ft across. Color shows how many of its addresses are mapped inside the zone:

Fewer than half
Half or more
All

Groundwater. At 2,262 of the 3,242 addresses measured here, groundwater is within 14 ft of the surface, close enough to reach a basement floor.

In those basements, water can seep up through the floor and come back after pumping until the ground drains. The 980 measured deeper are the exception.

7 addresses fall where the groundwater map has no reading.

Each square is about 350 ft across. Color shows the typical depth under its addresses (USGS map, spring 2013):

Within 10 ft1,891
10 to 14 ft371
14 to 25 ft834
Deeper than 25 ft146

Sewer. 176 of the 3,249 addresses in Oakdale have a county sewer main mapped past them. That does not mean every house is connected.

At the other 3,073, a backup means a cesspool or septic tank, and a pumping company. On a main, it means a plumber, or the sewer district if the main is blocked.

Each square is about 350 ft across. Color shows how many of its addresses have a mapped main:

Fewer than half
All

What is happening at your home?

Cesspool Overflow Cesspool sewage backing up into the house? Get help in Oakdale Basement Flooding Water coming up through the basement floor or walls? Get help in Oakdale Sump Pump Failure Sump pump stopped, or the pit filling faster than it empties? Get help in Oakdale

Other water emergencies we cover

Appliance Leak Cleanup Ceiling & Roof Leak Water Damage Mold Remediation Storm Damage Restoration Toilet Overflow Cleanup Water Heater Leak

Not sure which one fits? Call (631) 440-4144 and tell us what you see.

Why water gets into Oakdale homes

In Oakdale, storm surge is the outside risk, and the risks inside the house are a full or failing cesspool, water rising through the basement floor and an aging pipe giving way.

Water coming in from outside. Salt water corrodes the wiring, outlets and appliances it reaches, so have them checked before the power goes back on. Oakdale sits in the path of storm surge: in a hurricane or a strong nor'easter, water from Nicoll Bay can be pushed into streets and ground floors, and 26.4% of its built-up land is in FEMA's flood zone. Look up your street. Storm Damage Restoration help
Sewage coming up a drain. Standard homeowners policies usually exclude sewage backup unless a water-backup endorsement was added, so check yours and photograph the damage before cleanup starts. County records map no sewer main past 3,073 of Oakdale's 3,249 addresses; those homes run on a cesspool or septic tank, and when one fills or fails, sewage comes back up through the lowest drain in the house. Cesspool Overflow help in Oakdale
Water in the basement. Anything kept on the basement floor is safer on shelves or pallets, because groundwater can rise into a basement with no sign of it outside. Groundwater sits about 9 ft below the yard in Oakdale, close enough to seep up through a basement floor after heavy rain or in a high-water season. Basement Flooding help in Oakdale
A leak or a burst pipe. Mold can start on wet drywall within a day or two, so a slow leak needs the wall opened and dried, not just the pipe fixed. About 49% of Oakdale's homes were built before 1970, and pipes from that era, galvanized steel and cast iron, corrode from the inside until a joint or a section gives way. If a pipe bursts, shut the main water valve first; a split supply line keeps running at full pressure until someone does. Ceiling & Roof Leak Water Damage help

Insurance and safety guidance from FEMA FloodSmart, the CDC and the Red Cross. How we measured the figures.

Street by street in Oakdale

Look up your street in Oakdale

See how many of its addresses are mapped inside the FEMA flood zone, how deep groundwater is mapped under it, and whether a sewer main is mapped past it.

107 streets, from county address records. Nothing you type is sent anywhere.

Check a house number in Oakdale

Streets inside the FEMA flood zone

546 of 3,249 address points in Oakdale are mapped inside a FEMA special flood hazard area. These streets hold the most of them:

Shore Dr — 92 of 136 addresses
Vanderbilt Blvd — 40 of 119 addresses
Connetquot Dr — 35 of 70 addresses
Bellevue Rd — 30 of 34 addresses
W Shore Rd — 24 of 64 addresses
Grassmere Ave — 24 of 33 addresses
Twin River Dr — 24 of 24 addresses
Riverview Ct — 22 of 23 addresses

How streets are counted

Streets with a mapped sewer main

County records map an active sewer main past 176 of 3,249 address points in Oakdale. On 2 streets nearly every address has one; the largest:

Willow Wood Dr — 67 addresses
Okeefe Ct — 32 addresses

How streets are counted

Quick facts — Oakdale

Flood and storm

FEMA flood zone: AE (100-yr floodplain)
Hurricane evacuation zone: Zone B Zones run A to E. A evacuates first.
Hurricane Sandy high-water mark: 5.8 ft The one mark USGS surveyed in Oakdale after the 2012 storm, in feet above the NAVD88 datum — a reading at one point, not a level across all of Oakdale. Ground elevation here averages 14 ft on the same datum.
Water nearby: Nicoll Bay to the south-east, Grand Canal to the south-west and Brook Kiln Creek to the south. Each direction is to its nearest point, from the center of Oakdale.

All 7 named water features

East: Indian Creek
South-east: Nicoll Bay, Ludlows Creek
South: Brook Kiln Creek, Connetquot River
South-west: Grand Canal
Direction not measured: Great South Bay

Oakdale's land area

FEMA coastal wave zone (VE)
FEMA 100-year floodplain (AE)
The flood-zone figure above says how much of the land these zones cover.

Homes here

Sewer status: Unsewered (Cesspool/Septic)
Home heating fuel: 28% fuel oil Utility gas heats 60% of occupied homes in Oakdale. Census estimates; the oil figure is within 8 points. An oil tank can float or tip in a flood and spill. That is a separate cleanup from the water (NYS DEC). In a cold snap, an empty tank means no heat.
When homes were built: Spread across decades The highlighted 1960s band is the largest, at 28%, but its lead over the 1970s band (27%) is inside the Census margin of error (8 points), so no decade clearly leads in Oakdale. Most homes here are over 30 years old. Past that age, an insurance-industry study (IBHS) found supply and drain pipe problems three times as likely.

In an emergency

Nearest fire department: West Sayville Fire Department
Nearest emergency shelter: East Islip Middle SchoolNot every shelter opens for every storm, and the nearest may stay closed. Suffolk County announces which ones open; follow its alerts and local news before you go.
ZIP code: 11769

Sources: FEMA NFHL / NOAA SLOSH, US Census ACS, USDA SSURGO, Suffolk County records. Verified 2026-10-18. How we measured this.

Oakdale and nearby areas

Oakdale has the largest mapped floodplain share of the 7 areas compared here.

Oakdale 26.4%
Great River 22.3%
West Sayville 16.7%
Sayville 5.3%
East Islip 4.0%
North Great River 0.2%
Bohemia 0.0%

Share of developed area inside FEMA's mapped floodplain, largest first.

1 of the other 6 areas compared here has shallower average groundwater than Oakdale.

Great River 8 ft
East Islip 9 ft
Oakdale 9 ft
West Sayville 13 ft
Sayville 16 ft
North Great River 19 ft
Bohemia 31 ft

Average depth to groundwater, shallowest first.

1 of the other 6 areas compared here has lower average ground than Oakdale.

Great River 11 ft
Oakdale 14 ft
East Islip 17 ft
West Sayville 17 ft
Sayville 31 ft
North Great River 40 ft
Bohemia 59 ft

Average height above sea level, lowest first.

Across the 6 areas around Oakdale the flood-zone share averages 8.1%. Here it is 26.4%. More of Oakdale's developed land is in a mapped flood zone than in the areas around it. The second gap is sewer coverage: 0% against 21% next door. Oakdale is less sewered than the areas around it.

Compared with the areas around Oakdale. How we measured them.

Frequently asked questions about Oakdale

Is Oakdale in a flood zone?

Oakdale's FEMA-mapped flood zone is AE (100-yr floodplain), covering about 26.4% of the developed area, per FEMA's flood map (NFHL).

Does Oakdale have public sewer, or cesspools?

Oakdale is unsewered — nearly every property runs on its own cesspool or septic system.

How old are homes in Oakdale?

The average home in Oakdale is about 56 years old, and 49% of the housing stock predates 1970 — older plumbing and unwaterproofed foundations are a common factor in local water damage.

Is Oakdale in a hurricane evacuation zone?

Oakdale falls in Suffolk County hurricane evacuation Zone B. Check the county's current maps before a named storm — zones are what county officials use when ordering evacuations.

See all FAQs

About the figures for Oakdale

Check them at the source

Who to call for water damage in Oakdale

(631) 440-4144

Tell us what is happening. We connect you with a local specialist who covers Oakdale.