Sewershed NR-002  ·  NYC DEP Combined Sewer Overflow Tributary Area

NR-002 - Sugar Hill, Manhattan

Properties in this area share the NR-002 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 Sugar Hill, Manhattan specifically.

NR-002 is a combined sewer area covering 156 properties in Sugar Hill, Manhattan. Flood Form rates 38% of them Moderate or High for stormwater exposure, and 20% for groundwater. 78% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation is typically 87 ft. The median building dates to 1912. 50% of parcels sit over a historic stream or pond.