Bayside & Little Neck Flood Exposure · NYC DEP Separate Storm Sewer Area
Bayside & Little Neck, Queens - MS4 Area
Properties here drain through separate storm sewers: rain runs in its own pipes straight to Little Neck Bay, apart from the sewage. When a storm drops rain faster than the catch basins can take it in, the water collects on streets and low lots instead. Here’s what that looks like for Bayside & Little Neck, Queens specifically.
6,801 properties in Bayside & Little Neck, Queens drain through separate storm sewers to Little Neck Bay. Flood Form rates 24% of them Moderate or High for stormwater, 21% for sewer backup, 9% for groundwater, and 6% for coastal flooding. 93% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation varies widely here: the land drops from about 105 ft to 28 ft, sloping down toward the northwest. Rain that falls uphill runs down the streets toward the low end, so properties there take on water from the blocks above as well as their own, and are the first to see ponding and sewer backups when the pipes fill. Properties higher up shed water downhill and pond less, so where a lot sits on the slope matters more here than any average for the area. The median building dates to 1950. 8% of parcels sit over a historic stream or pond. Their runoff reaches the water through 10 NYC DEP storm sewer outfalls. NYC DEP lists pathogens as a pollutant of concern in these waters under its MS4 stormwater permit.
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Flood exposure in Bayside & Little Neck (Little Neck Bay)
The share of properties Flood Form rates Moderate or High for each type of flooding, on the same Minimal to High scale as an individual report.
24%
Stormwater exposure: Moderate or High
21%
Sewer Backup exposure: Moderate or High
9%
Groundwater exposure: Moderate or High
6%
Coastal exposure: Moderate or High
What sets Bayside & Little Neck (Little Neck Bay) apart
The three figures on which this area differs most from the rest of NYC’s separate storm sewer areas.
24%
Properties with Moderate or High stormwater exposure
Lower than 90% of NYC's separate storm sewer areas. Few lots sit where heavy rain ponds or flows.
93%
Legally eligible for on-site infiltration
Higher than 85% of NYC's separate storm sewer areas. More yards here have room to soak stormwater in.
77 ft
Elevation change from low to high ground
Steeper than 80% of NYC's separate storm sewer areas. Runoff from the higher blocks flows downhill onto the lower ones.
Stats computed from Flood Form’s NYC parcel data as of October 28, 2026
Where Bayside & Little Neck’s storm sewers drain
The waters NYC DEP maps this area’s storm sewer outfalls to, by number of properties.
4,056
Little Neck Bay
1,472
Alley Creek
1,109
Udall's Cove
164
Alley Creek/Little Neck Bay Trib
Common solutions for Bayside & Little Neck properties
The measures that most often suit conditions here. An individual Flood Form picks the exact set for one lot. See all flood prevention solutions.
Downspout Diversion
Redirect roof downspouts away from the sewer system toward permeable yard areas, planters, or a rain barrel.
Complexity: Low · 1–4 weeks
Modular Drywell System
An NDS Flo-Well modular drywell system lets water soak into the ground on-site.
Complexity: Moderate · 1–3 weeks
Rain Garden
A shallow planted depression that collects runoff from roofs and paved areas and lets it soak into the ground over a day or two.
Complexity: Low · 1–3 weeks
Backflow Preventer + Gate Valve
A backflow preventer on the building sewer lets wastewater flow out to the street but closes automatically when the municipal sewer surcharges, preventing sewage from backing up into the basement.
Complexity: Moderate · 2–6 weeks
Sewer Line Video Inspection
A licensed plumber runs a camera through the building sewer from a cleanout to the street connection, recording the condition of the pipe.
Complexity: Low · 1–2 weeks
Detention System
A detention cistern or underground storage tank temporarily holds stormwater runoff and releases it slowly after storm peaks subside.
Complexity: High · 3–6 months
Which of these fit your lot?
Your Flood Form rates your property’s exposure and recommends the measures suited to it.
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Questions about flooding in Bayside & Little Neck (Little Neck Bay)
What does it mean that Bayside & Little Neck has separate storm sewers?
This part of Bayside & Little Neck, Queens is served by a separate storm sewer system, which NYC DEP calls an MS4. Catch basins and roof drains carry rain in their own pipes straight to Little Neck Bay, while wastewater flows in another pipe to a treatment plant. Because rain doesn't share a pipe with sewage here, a storm is less likely to push sewage back into basements than in combined-sewer neighborhoods, though a blocked or undersized house sewer line can still back up. Flooding here mostly comes from runoff the storm drains can't take in fast enough, and from groundwater and tides.
How exposed to flooding is Bayside & Little Neck (Little Neck Bay)?
The most widespread exposure in Bayside & Little Neck is stormwater: Flood Form rates 24% of properties Moderate or High for it. The share is 21% for sewer backup, 9% for groundwater and 6% for coastal flooding. These figures describe the whole area, and exposure varies lot by lot within it.
Can properties in Bayside & Little Neck (Little Neck Bay) manage stormwater on site?
93% of lots in Bayside & Little Neck have yard area that legally qualifies for on-site infiltration, such as a drywell or rain garden. A lot without that room can still hold runoff with a detention tank or a blue roof.
Why does runoff from Bayside & Little Neck matter for Little Neck Bay?
Storm sewers here discharge runoff without treatment, so what washes off streets, roofs and yards ends up in Little Neck Bay. NYC DEP lists pathogens as a pollutant of concern in these waters under its MS4 stormwater permit. Holding roof runoff on site with a rain garden, drywell, or detention tank cuts flooding on the property and what reaches the water.
How do I check one property in Bayside & Little Neck (Little Neck Bay)?
Enter the address on this page to get its free Flood Form. The report rates that property for stormwater, sewer backup, groundwater, and coastal flooding, and recommends measures suited to the lot.
Nearby separate storm sewer areas
- East River & Long Island SoundWhitestone & College Point4,510 properties · 25% with Moderate or High stormwater exposure
- Flushing Bay & CreekCollege Point & Flushing1,104 properties · 32% with Moderate or High stormwater exposure
- Bergen BasinSt. Albans & South Jamaica41,298 properties · 44% with Moderate or High stormwater exposure
- Long Island Sound & Eastchester BayPelham Bay & City Island2,071 properties · 33% with Moderate or High stormwater exposure
- Hook Creek & Head of BayRosedale & Springfield Gardens8,449 properties · 39% with Moderate or High stormwater exposure
- Shellbank & Hawtree BasinsHoward Beach5,067 properties · 52% with Moderate or High stormwater exposure