Tottenville & Huguenot Flood Exposure · NYC DEP Separate Storm Sewer Area
Tottenville & Huguenot, Staten Island - MS4 Area
Properties here drain through separate storm sewers: rain runs in its own pipes straight to Raritan 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 Tottenville & Huguenot, Staten Island specifically.
14,780 properties in Tottenville & Huguenot, Staten Island drain through separate storm sewers to Raritan Bay. Flood Form rates 32% of them Moderate or High for stormwater, 14% for sewer backup, 17% for groundwater, and 23% for coastal flooding. 82% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation varies widely here: the land drops from about 86 ft to 10 ft, sloping down toward the northeast. 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 1978. 18% of parcels sit over a historic stream or pond. Their runoff reaches the water through 50 NYC DEP storm sewer outfalls.
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Flood exposure in Tottenville & Huguenot (Raritan 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.
32%
Stormwater exposure: Moderate or High
14%
Sewer Backup exposure: Moderate or High
17%
Groundwater exposure: Moderate or High
23%
Coastal exposure: Moderate or High
What sets Tottenville & Huguenot (Raritan Bay) apart
The three figures on which this area differs most from the rest of NYC’s separate storm sewer areas.
61%
Average impervious cover per lot
Lower than 95% of NYC's separate storm sewer areas. More open ground to absorb rain.
18%
Properties over a historic stream or pond
Higher than 90% of NYC's separate storm sewer areas. Buried waterways still steer groundwater under these blocks.
1978
Median year built
Newer than 90% of NYC's separate storm sewer areas. Recent construction tends to have up-to-date drains and sewer connections.
Stats computed from Flood Form’s NYC parcel data as of October 28, 2026
Where Tottenville & Huguenot’s storm sewers drain
The waters NYC DEP maps this area’s storm sewer outfalls to, by number of properties.
5,980
Raritan Bay
5,959
Staten Island Tributaries, South
1,446
Mill Creek
639
Arbutus Creek
506
Arbutus Lake Tributaries
139
Raritan Bay, East
106
Raritan Bay (Class Sa)
5
Raritan Bay, West
Common solutions for Tottenville & Huguenot 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
Raised Threshold
Raising a doorway threshold with a concrete step or raised sill keeps shallow surface water from entering at ground-level and below-grade doors.
Complexity: Low · 1–2 weeks
Window Well
A lined enclosure around a below-grade basement window holds back soil and keeps surface water off the glass.
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 Tottenville & Huguenot (Raritan Bay)
What does it mean that Tottenville & Huguenot has separate storm sewers?
This part of Tottenville & Huguenot, 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 Raritan 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 Tottenville & Huguenot (Raritan Bay)?
The most widespread exposure in Tottenville & Huguenot is stormwater: Flood Form rates 32% of properties Moderate or High for it. The share is 14% for sewer backup, 17% for groundwater and 23% for coastal flooding. These figures describe the whole area, and exposure varies lot by lot within it.
Can properties in Tottenville & Huguenot (Raritan Bay) manage stormwater on site?
82% of lots in Tottenville & Huguenot 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 Tottenville & Huguenot matter for Raritan Bay?
Storm sewers here discharge runoff without treatment, so what washes off streets, roofs and yards ends up in Raritan Bay. 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 Tottenville & Huguenot (Raritan 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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