Sewershed NR-020 · NYC DEP Combined Sewer Overflow Tributary Area
NR-020 - West Village, Manhattan
Properties in this area share the NR-020 combined sewer — during moderate-to-heavy rain, runoff can exceed pipe capacity faster than it drains, which is what drives sewer backup exposure block by block. Here’s what that looks like for West Village, Manhattan specifically.
NR-020 is a combined sewer area covering 385 properties in West Village, Manhattan. Flood Form rates 59% of them Moderate or High for stormwater exposure, and 5% for groundwater. 49% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation is typically 19 ft. The median building dates to 1868. 12% of parcels sit over a historic stream or pond.
385
Properties in sewershed
48.8%
Legally eligible for on-site infiltration
59%
Stormwater exposure: Moderate or High
5%
Groundwater exposure: Moderate or High
What sets NR-020 apart
19 ft
Median ground elevation
91%
Average impervious cover per lot
1868
Median year built
12%
Properties over a historic stream or pond
Stats computed from Flood Form’s NYC parcel data as of October 9, 2026
Common solutions for West Village properties
Downspout Diversion
Redirects roof runoff away from the combined sewer and into landscaped or permeable areas on the lot.
Infiltration System
Drywells or infiltration chambers that let stormwater soak into the ground on-site instead of entering the sewer.
Detention System
Holds stormwater temporarily and releases it slowly, reducing peak flow into the combined sewer during a storm.
Drain Improvement
Upgrades yard, area, or foundation drains so water is carried away from the building instead of pooling.
Foundation Waterproofing
Protects the foundation from groundwater intrusion, relevant where groundwater exposure runs high.
Nearby sewersheds
- NR-049Chelsea260 properties · 36% with Moderate or High stormwater exposure
- NC-081West Village536 properties · 43% with Moderate or High stormwater exposure
- NCM-076West Village1,904 properties · 50% with Moderate or High stormwater exposure
- NR-024Chelsea420 properties · 75% with Moderate or High stormwater exposure
- NR-023Flatiron883 properties · 62% with Moderate or High stormwater exposure
- NR-025Chelsea152 properties · 91% with Moderate or High stormwater exposure
Want to see where your specific property stands?
Get Your Property’s Flood Form