FLOOD FORM
23-45 31 DRIVE

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. Low infiltration potential — conveyance and management strategies may be more appropriate. 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 1925

Building Footprint1,172 SF

Roof Runoff 1" Rain731 Gallons

Elevation16'

Groundwater Depth4'

SewershedBB-029

Flood Exposure TypeScore

Sewer BackupLow

StormwaterLow

GroundwaterHigh

CoastalMinimal

Infiltration CriteriaValue

Lot Impervious Area2,471 SF

Block Impervious %82%

Soil Infiltration Rate3 IN/HR

Available Area872 SF

Infiltration RatingLow