Sewershed BB-008 · NYC DEP Combined Sewer Overflow Tributary Area
BB-008 - Corona, Queens
Properties in this area share the BB-008 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 Corona, Queens specifically.
BB-008 is a combined sewer area covering 10,580 properties in Corona, Queens. Flood Form rates 32% of them Moderate or High for stormwater exposure, and 2% for groundwater. 77% of lots have yard area that legally qualifies for on-site infiltration. Ground elevation is typically 55 ft. The median building dates to 1930. According to NYC DEP green infrastructure records, this sewershed drains to Flushing Bay. NYC DEP has built 241 green infrastructure assets here.
10,580
Properties in sewershed
77.1%
Legally eligible for on-site infiltration
32%
Stormwater exposure: Moderate or High
2%
Groundwater exposure: Moderate or High
What sets BB-008 apart
55 ft
Median ground elevation
92%
Average impervious cover per lot
1930
Median year built
0%
Properties over a historic stream or pond
Stats computed from Flood Form’s NYC parcel data as of October 9, 2026
Common solutions for Corona 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-007East Elmhurst1,033 properties · 15% with Moderate or High stormwater exposure
- BB-005Jackson Heights25,224 properties · 45% with Moderate or High stormwater exposure
- BB-006Forest Hills19,223 properties · 40% with Moderate or High stormwater exposure
- TI-022Flushing1,136 properties · 46% with Moderate or High stormwater exposure
- BB-003Steinway1,740 properties · 32% with Moderate or High stormwater exposure
- TI-014College Point272 properties · 4% with Moderate or High stormwater exposure
Want to see where your specific property stands?
Get Your Property’s Flood Form