Sewershed PR-031 · NYC DEP Combined Sewer Overflow Tributary Area
PR-031 - Fox Hills, Staten Island
Properties in this area share the PR-031 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 Fox Hills, Staten Island specifically.
PR-031 is a combined sewer area covering 5,512 properties in Fox Hills, Staten Island. Flood Form rates 31% of them Moderate or High for stormwater exposure, and 17% for groundwater. 87% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation is typically 99 ft. The median building dates to 1965. 5% of parcels sit over a historic stream or pond.
5,512
Properties in sewershed
86.6%
Legally eligible for on-site infiltration
31%
Stormwater exposure: Moderate or High
17%
Groundwater exposure: Moderate or High
What sets PR-031 apart
99 ft
Median ground elevation
61%
Average impervious cover per lot
1965
Median year built
5%
Properties over a historic stream or pond
Stats computed from Flood Form’s NYC parcel data as of October 9, 2026
Common solutions for Fox Hills 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
- PR-019Rosebank2,337 properties · 34% with Moderate or High stormwater exposure
- PR-017Clifton549 properties · 23% with Moderate or High stormwater exposure
- PR-014Tompkinsville1,283 properties · 26% with Moderate or High stormwater exposure
- PR-006New Brighton231 properties · 27% with Moderate or High stormwater exposure
- PR-011St. George111 properties · 46% with Moderate or High stormwater exposure
- PR-029Todt Hill9,821 properties · 41% with Moderate or High stormwater exposure
Want to see where your specific property stands?
Get Your Property’s Flood Form