Westerleigh & West New Brighton Flood Exposure · NYC DEP Separate Storm Sewer Area
Westerleigh & West New Brighton, Staten Island - MS4 Area
Properties here drain through separate storm sewers: rain runs in its own pipes straight to the Kill Van Kull and Upper New York 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 Westerleigh & West New Brighton, Staten Island specifically.
17,898 properties in Westerleigh & West New Brighton, Staten Island drain through separate storm sewers to the Kill Van Kull and Upper New York Bay. Flood Form rates 30% of them Moderate or High for stormwater, 29% for sewer backup, 3% for groundwater, and 5% 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 231 ft to 24 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 1940. 12% of parcels sit over a historic stream or pond. Their runoff reaches the water through 18 NYC DEP storm sewer outfalls. NYC DEP lists floatables as a pollutant of concern in these waters under its MS4 stormwater permit.
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Flood exposure in Westerleigh & West New Brighton (Kill Van Kull & Upper New York 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.
30%
Stormwater exposure: Moderate or High
29%
Sewer Backup exposure: Moderate or High
3%
Groundwater exposure: Moderate or High
5%
Coastal exposure: Moderate or High
What sets Westerleigh & West New Brighton (Kill Van Kull & Upper New York Bay) apart
The three figures on which this area differs most from the rest of NYC’s separate storm sewer areas.
3%
Properties with Moderate or High groundwater exposure
The lowest of NYC's separate storm sewer areas. Few lots show signs of a shallow water table.
207 ft
Elevation change from low to high ground
The steepest of NYC's separate storm sewer areas. Runoff from the higher blocks flows downhill onto the lower ones.
61%
Average impervious cover per lot
Lower than 95% of NYC's separate storm sewer areas. More open ground to absorb rain.
Stats computed from Flood Form’s NYC parcel data as of October 28, 2026
Where Westerleigh & West New Brighton’s storm sewers drain
The waters NYC DEP maps this area’s storm sewer outfalls to, by number of properties.
12,873
Kill Van Kull
2,751
Clove Lake
1,171
Upper New York Bay
370
Silver Lake Reservoir
356
Martling Lake
352
Brooks Lake
18
Minor Staten Island Tributaries, North
7
Valley Lake
Common solutions for Westerleigh & West New Brighton 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
Area Drain
A yard area drain — a surface inlet at the lowest point in the yard — provides a direct outlet for stormwater that pools on the site.
Complexity: Low · 1–4 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
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 Westerleigh & West New Brighton (Kill Van Kull & Upper New York Bay)
What does it mean that Westerleigh & West New Brighton has separate storm sewers?
This part of Westerleigh & West New Brighton, Staten Island 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 the Kill Van Kull and Upper New York 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 Westerleigh & West New Brighton (Kill Van Kull & Upper New York Bay)?
The most widespread exposure in Westerleigh & West New Brighton is stormwater: Flood Form rates 30% of properties Moderate or High for it. The share is 29% for sewer backup, 3% for groundwater and 5% for coastal flooding. These figures describe the whole area, and exposure varies lot by lot within it.
Can properties in Westerleigh & West New Brighton (Kill Van Kull & Upper New York Bay) manage stormwater on site?
93% of lots in Westerleigh & West New Brighton 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 Westerleigh & West New Brighton matter for the Kill Van Kull and Upper New York Bay?
Storm sewers here discharge runoff without treatment, so what washes off streets, roofs and yards ends up in the Kill Van Kull and Upper New York Bay. NYC DEP lists floatables 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 Westerleigh & West New Brighton (Kill Van Kull & Upper New York 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.
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