21-25 31st Avenue, Queens, NY 11106 Flood Risk | Flood Form
FLOOD FORM 21-25 31 AVENUE
Queens, 11106
F
Resilience Grade
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Property Summary
High 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 3' 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.
Property TypeTwo Family Residential, Built 1998
Building Footprint1,125 SF
Roof Runoff 1" Rain701 Gallons
Elevation12'
Groundwater Depth3'
SewershedBB-029
Flood Exposure TypeScore
Sewer BackupModerate
StormwaterModerate
GroundwaterHigh
CoastalLow
Infiltration CriteriaValue
Lot Impervious Area1,882 SF
Block Impervious %94%
Soil Infiltration Rate3 IN/HR
Available Area1,149 SF
Infiltration RatingModerate
Flood Exposure TypeScore
Infiltration CriteriaValue
Sewer BackupModerate
Lot Impervious Area1,882 SF
StormwaterModerate
Block Impervious %94%
GroundwaterHigh
Soil Infiltration Rate3 IN/HR
CoastalLow
Available Area1,149 SF
Infiltration RatingModerate
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