FLOOD FORM
21-15 33 ROAD

Queens, 11106

Resilience
Grade

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Property Summary

High Compound Flood Exposure index. Groundwater flooding is the primary exposure factor for this property. Moderate infiltration potential — standard systems such as drywells and French drains are viable. Estimated groundwater depth of about 4' indicates a persistently shallow water table with elevated seepage potential into below-grade spaces. Soil records near this property point to groundwater that may sit close to the surface; a percolation test is recommended before any infiltration work. Property drains to the BB-029 combined sewer outfall. Site overlaps a buried historic stream — groundwater levels may rise rapidly during rain events independent of the resting water table depth; subsurface investigation is recommended before any infiltration work.

Property TypeMulti-Family Residential, Built 1965

Building Footprint1,034 SF

Roof Runoff 1" Rain645 Gallons

Elevation15'

Groundwater Depth4'

SewershedBB-029

Flood Exposure TypeScore

Sewer BackupMinimal

StormwaterModerate

GroundwaterHigh

CoastalLow

Infiltration CriteriaValue

Lot Impervious Area1,587 SF

Block Impervious %75%

Soil Infiltration Rate3 IN/HR

Available Area1,538 SF

Infiltration RatingModerate