23-43 31st Avenue, Queens, NY 11106 Flood Risk | Flood Form
FLOOD FORM 23-43 31 AVENUE
Queens, 11106
D
Resilience Grade
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Property Summary
Moderate 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 9' indicates a persistently shallow water table with elevated seepage potential into below-grade spaces. Property drains to the BB-029 combined sewer outfall.
Property TypeTwo Family Residential, Built 1901
Building Footprint792 SF
Roof Runoff 1" Rain494 Gallons
Elevation21'
Groundwater Depth9'
SewershedBB-029
Flood Exposure TypeScore
Sewer BackupLow
StormwaterMinimal
GroundwaterModerate
CoastalMinimal
Infiltration CriteriaValue
Lot Impervious Area1,821 SF
Block Impervious %79%
Soil Infiltration Rate3 IN/HR
Available Area1,286 SF
Infiltration RatingModerate
Flood Exposure TypeScore
Infiltration CriteriaValue
Sewer BackupLow
Lot Impervious Area1,821 SF
StormwaterMinimal
Block Impervious %79%
GroundwaterModerate
Soil Infiltration Rate3 IN/HR
CoastalMinimal
Available Area1,286 SF
Infiltration RatingModerate
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