Sewershed NCB-015 · NYC DEP Combined Sewer Overflow Tributary Area
NCB-015 - Bushwick, Brooklyn
Properties in this area share the NCB-015 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 Bushwick, Brooklyn specifically.
NCB-015 is a combined sewer area covering 19,026 properties in Bushwick, Brooklyn. Flood Form rates 38% of them Moderate or High for stormwater exposure, and 21% for groundwater. 82% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation is typically 52 ft. The median building dates to 1920. 10% of parcels sit over a historic stream or pond. According to NYC DEP green infrastructure records, this sewershed drains to Newtown Creek. NYC DEP has built 545 green infrastructure assets here.
19,026
Properties in sewershed
81.9%
Legally eligible for on-site infiltration
38%
Stormwater exposure: Moderate or High
21%
Groundwater exposure: Moderate or High
What sets NCB-015 apart
52 ft
Median ground elevation
81%
Average impervious cover per lot
1920
Median year built
10%
Properties over a historic stream or pond
Stats computed from Flood Form’s NYC parcel data as of October 9, 2026
Common solutions for Bushwick 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
- NCB-014Bedford-Stuyvesant16,178 properties · 39% with Moderate or High stormwater exposure
- NCB-083Ridgewood13,342 properties · 38% with Moderate or High stormwater exposure
- NCB-012East Williamsburg1,861 properties · 49% with Moderate or High stormwater exposure
- 26W-003Brownsville12,515 properties · 41% with Moderate or High stormwater exposure
- RH-005Bedford-Stuyvesant8,460 properties · 43% with Moderate or High stormwater exposure
- 26W-004New Lots4,058 properties · 45% with Moderate or High stormwater exposure
Want to see where your specific property stands?
Get Your Property’s Flood Form