Area guideNorth Bay Shore
Water Damage Restoration Help in North Bay Shore, NY
Connect with a local specialist now.
The hamlet of North Bay Shore · 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 North Bay Shore, 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.
- You call Tell us what you're seeing
- We connect you With a local specialist covering all of North Bay Shore
- They arrange A visit with you
None of the 3,706 addresses in North Bay Shore is in FEMA's flood zone, so the water that damages homes here usually comes from their own pipes and drains, not from a flood.
North Bay Shore at a glanceTap a figure to see it on the map
Flood risk: LowFlood zone. None of the 3,706 addresses here is inside FEMA's mapped flood zone or within about 100 ft of it.
Groundwater. At 54 of the 3,706 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. At the other 3,652, water in a basement usually comes in from above.
Each square is about 350 ft across. Color shows the typical depth under its addresses (USGS map, spring 2013):
- Within 10 ft3
- 10 to 14 ft51
- 14 to 25 ft1,428
- Deeper than 25 ft2,224
What is happening at your home?
Other water emergencies we cover
Not sure which one fits? Call (631) 440-4144 and tell us what you see.
Why water gets into North Bay Shore homes
None of North Bay Shore's built-up land is in FEMA's flood zone, so floodwater from outside is not the main threat to homes here. For homes here, the risks to know are a cesspool backing up, a wet basement, a pipe that freezes and splits and an aging pipe giving way.
- 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. Homes in North Bay Shore treat their own wastewater in a cesspool or septic tank, so when the system is full, slow drains and gurgling pipes come before sewage in the lowest drain. Cesspool Overflow help in North Bay Shore
- Water in the basement. North Bay Shore's water table averages 25 ft, but most addresses sit beyond its reach, so a wet basement here usually points to a pipe, a downspout or runoff. The soil in North Bay Shore drains fast, so standing water by the foundation after rain is a sign to check the gutters and grading before it finds the basement. Basement Flooding help in North Bay Shore
- A burst pipe. If a pipe bursts, shut the main water valve first; a split supply line keeps running at full pressure until someone does. Fuel oil heats about 33% of North Bay Shore's homes, so a missed delivery in a cold week can leave a house without heat long enough for a pipe to freeze and split. Frozen Pipe Burst help in North Bay Shore
- A leak in a wall or ceiling. A leak caught early is a drying job; one that has run for weeks inside a wall is a mold job, so have it opened up and dried properly. About 57% of North Bay Shore'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. 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 North Bay Shore
See how many of its addresses are mapped inside the FEMA flood zone and how deep groundwater is mapped under it.
114 streets, from county address records. Nothing you type is sent anywhere.
Quick facts — North Bay Shore
Flood and storm
- FEMA flood zone
- X (minimal)
- Water nearby
- Orowoc Creek to the east. Each direction is to its nearest point, from the center of North Bay Shore.
In an emergency
- Nearest fire department
- Bay Shore Fire Department Headquarters
- Nearest emergency shelter
- Brentwood Senior High 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
- 11706
Homes here
- Sewer status
- Unsewered (Cesspool/Septic)
- Home heating fuel
- 33% fuel oil Utility gas heats 50% of occupied homes in North Bay Shore. Census estimates; the oil figure is within 7 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 1950s band is the largest, at 24%, but its lead over the 1960s band (24%) is inside the Census margin of error (6 points), so no decade clearly leads in North Bay Shore. 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.
Sources: FEMA NFHL / NOAA SLOSH, US Census ACS, USDA SSURGO, Suffolk County records. Verified 2026-10-18. How we measured this.
North Bay Shore and nearby areas
None of the other 4 areas compared here has a smaller mapped floodplain share than North Bay Shore.
- Bay Shore 7.6%
- Brightwaters 7.5%
- Islip 4.4%
- North Bay Shore 0.0%
- Baywood 0.0%
Share of developed area inside FEMA's mapped floodplain, largest first.
North Bay Shore has the deepest average groundwater of the 5 areas compared here.
- Brightwaters 7 ft
- Islip 9 ft
- Bay Shore 12 ft
- Baywood 21 ft
- North Bay Shore 25 ft
Average depth to groundwater, shallowest first.
3 of the other 4 areas compared here have lower average ground than North Bay Shore.
- Brightwaters 19 ft
- Islip 25 ft
- Bay Shore 31 ft
- North Bay Shore 62 ft
- Baywood 64 ft
Average height above sea level, lowest first.
Across the 4 areas around North Bay Shore the sewer coverage averages 72%. Here it is 0%. North Bay Shore is less sewered than the areas around it. The second gap is ground elevation: 62 ft against 35 ft next door. North Bay Shore sits on higher ground than the areas around it.
Compared with the areas around North Bay Shore. How we measured them.
Frequently asked questions about North Bay Shore
Is North Bay Shore in a flood zone?
North Bay Shore has no developed land inside a FEMA special flood hazard area, per FEMA's flood map (NFHL). The flood map describes surface flooding only, so it says nothing about groundwater, sewer or plumbing failures.
Does North Bay Shore have public sewer, or cesspools?
North Bay Shore is unsewered — nearly every property runs on its own cesspool or septic system.
How deep is the water table in North Bay Shore?
The measured water table runs about 25 ft below the surface on average across North Bay Shore. It is mapped within 10 ft at 3 of 3,706 addresses and within 25 ft at 1,482.
How old are homes in North Bay Shore?
The average home in North Bay Shore is about 59 years old, and 57% of the housing stock predates 1970 — older plumbing and unwaterproofed foundations are a common factor in local water damage.
About the figures for North Bay Shore
Check them at the source
Who to call for water damage in North Bay Shore
(631) 440-4144Tell us what is happening. We connect you with a local specialist who covers North Bay Shore.