Sewershed WI-061 · NYC DEP Combined Sewer Overflow Tributary Area
WI-061 - Highbridge, Bronx
Properties in this area share the WI-061 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 Highbridge, Bronx specifically.
WI-061 is a combined sewer area covering 296 properties in Highbridge, Bronx. Flood Form rates 48% of them Moderate or High for stormwater exposure, and 30% for groundwater. 66% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation is typically 105 ft. The median building dates to 1931. 31% of parcels sit over a historic stream or pond.
296
Properties in sewershed
66.2%
Legally eligible for on-site infiltration
48%
Stormwater exposure: Moderate or High
30%
Groundwater exposure: Moderate or High
What sets WI-061 apart
105 ft
Median ground elevation
82%
Average impervious cover per lot
1931
Median year built
31%
Properties over a historic stream or pond
Stats computed from Flood Form’s NYC parcel data as of October 9, 2026
Common solutions for Highbridge 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
- WI-051Washington Heights258 properties · 36% with Moderate or High stormwater exposure
- WI-052Washington Heights365 properties · 33% with Moderate or High stormwater exposure
- WI-075Concourse Village778 properties · 39% with Moderate or High stormwater exposure
- WI-059Morris Heights378 properties · 37% with Moderate or High stormwater exposure
- NR-003Washington Heights403 properties · 30% with Moderate or High stormwater exposure
- WI-062Mount Eden3,099 properties · 44% with Moderate or High stormwater exposure
Want to see where your specific property stands?
Get Your Property’s Flood Form