FLOOD FORM
12-27 31 AVENUE

Queens, 11106

Resilience
Grade

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Property Summary

High Compound Flood Exposure index. Coastal flooding is the primary exposure factor for this property. Moderate infiltration potential — standard systems such as drywells and French drains are viable. A soil boring about 270' away found groundwater at 7', a shallow water table with elevated seepage potential into below-grade spaces. 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 TypeOne Family Residential, Built 1901

Building Footprint533 SF

Roof Runoff 1" Rain332 Gallons

Elevation10'

Groundwater Depth7'

SewershedBB-029

Flood Exposure TypeScore

Sewer BackupModerate

StormwaterHigh

GroundwaterModerate

CoastalHigh

Infiltration CriteriaValue

Lot Impervious Area1,124 SF

Block Impervious %88%

Soil Infiltration Rate3 IN/HR

Available Area1,051 SF

Infiltration RatingModerate