31-13 21st Street, Queens, NY 11106 Flood Risk | Flood Form
FLOOD FORM 31-13 21 STREET
Queens, 11106
F
Resilience Grade
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Property Summary
High Compound Flood Exposure index.Stormwater 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 5' indicates a persistently shallow water table with elevated seepage potential into below-grade spaces. Property drains to the BB-029 combined sewer outfall.
Property TypeMixed Use, Built 1925
Building Footprint1,200 SF
Roof Runoff 1" Rain748 Gallons
Elevation10'
Groundwater Depth5'
SewershedBB-029
Flood Exposure TypeScore
Sewer BackupLow
StormwaterHigh
GroundwaterHigh
CoastalHigh
Infiltration CriteriaValue
Lot Impervious Area1,344 SF
Block Impervious %91%
Soil Infiltration Rate3 IN/HR
Available Area890 SF
Infiltration RatingLow
Flood Exposure TypeScore
Infiltration CriteriaValue
Sewer BackupLow
Lot Impervious Area1,344 SF
StormwaterHigh
Block Impervious %91%
GroundwaterHigh
Soil Infiltration Rate3 IN/HR
CoastalHigh
Available Area890 SF
Infiltration RatingLow
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