Sewershed WI-064 · NYC DEP Combined Sewer Overflow Tributary Area
WI-064 - Concourse, Bronx
Properties in this area share the WI-064 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 Concourse, Bronx specifically.
WI-064 is a combined sewer area covering 213 properties in Concourse, Bronx. Flood Form rates 43% of them Moderate or High for stormwater exposure, and 28% for groundwater. 65% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation is typically 38 ft. The median building dates to 1929. 6% of parcels sit over a historic stream or pond.
213
Properties in sewershed
65.3%
Legally eligible for on-site infiltration
43%
Stormwater exposure: Moderate or High
28%
Groundwater exposure: Moderate or High
What sets WI-064 apart
38 ft
Median ground elevation
88%
Average impervious cover per lot
1929
Median year built
6%
Properties over a historic stream or pond
Stats computed from Flood Form’s NYC parcel data as of October 9, 2026
Common solutions for Concourse 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-066Mott Haven139 properties · 56% with Moderate or High stormwater exposure
- WI-075Concourse Village778 properties · 39% with Moderate or High stormwater exposure
- WI-045Harlem528 properties · 25% with Moderate or High stormwater exposure
- WI-046Harlem1,534 properties · 35% with Moderate or High stormwater exposure
- WI-067Mott Haven265 properties · 23% with Moderate or High stormwater exposure
- WI-038Harlem671 properties · 30% with Moderate or High stormwater exposure
Want to see where your specific property stands?
Get Your Property’s Flood Form