Sewershed BB-024 · NYC DEP Combined Sewer Overflow Tributary Area
BB-024 - Queensbridge, Queens
Properties in this area share the BB-024 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 Queensbridge, Queens specifically.
BB-024 is a combined sewer area covering 459 properties in Queensbridge, Queens. Flood Form rates 67% of them Moderate or High for stormwater exposure, and 29% for groundwater. 37% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation is typically 18 ft. The median building dates to 1935. 23% of parcels sit over a historic stream or pond.
459
Properties in sewershed
36.8%
Legally eligible for on-site infiltration
67%
Stormwater exposure: Moderate or High
29%
Groundwater exposure: Moderate or High
What sets BB-024 apart
18 ft
Median ground elevation
94%
Average impervious cover per lot
1935
Median year built
23%
Properties over a historic stream or pond
Stats computed from Flood Form’s NYC parcel data as of October 9, 2026
Common solutions for Queensbridge 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
- BB-023Long Island City282 properties · 73% with Moderate or High stormwater exposure
- BB-027Queensbridge130 properties · 58% with Moderate or High stormwater exposure
- BB-021Long Island City380 properties · 62% with Moderate or High stormwater exposure
- BB-013Long Island City119 properties · 64% with Moderate or High stormwater exposure
- BB-026Sunnyside628 properties · 63% with Moderate or High stormwater exposure
- BB-028Woodside5,778 properties · 37% with Moderate or High stormwater exposure
Want to see where your specific property stands?
Get Your Property’s Flood Form