31-47 30th Street, Queens, NY 11106 Flood Risk | Flood Form
FLOOD FORM 31-47 30 STREET
Queens, 11106
C
Resilience Grade
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Property Summary
Low Compound Flood Exposure index.Sewer backup is the primary exposure factor for this property.Moderate infiltration potential — standard systems such as drywells and French drains are viable. 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 1955
Building Footprint740 SF
Roof Runoff 1" Rain461 Gallons
Elevation46'
Groundwater Depth28'
SewershedBB-029
Flood Exposure TypeScore
Sewer BackupLow
StormwaterMinimal
GroundwaterLow
CoastalMinimal
Infiltration CriteriaValue
Lot Impervious Area2,172 SF
Block Impervious %80%
Soil Infiltration Rate3 IN/HR
Available Area1,565 SF
Infiltration RatingModerate
Flood Exposure TypeScore
Infiltration CriteriaValue
Sewer BackupLow
Lot Impervious Area2,172 SF
StormwaterMinimal
Block Impervious %80%
GroundwaterLow
Soil Infiltration Rate3 IN/HR
CoastalMinimal
Available Area1,565 SF
Infiltration RatingModerate
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