30-10 23rd Street, Queens, NY 11102 Flood Risk | Flood Form
FLOOD FORM 30-10 23 STREET
Queens, 11102
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. Soil borings about 220' away found no groundwater to a depth of 37' in 2024. Soil records near this property point to deep fill soil; a percolation test is recommended before any infiltration work. 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 TypeTwo Family Residential, Built 1950
Building Footprint990 SF
Roof Runoff 1" Rain617 Gallons
Elevation21'
Groundwater Depth37'
SewershedBB-029
Flood Exposure TypeScore
Sewer BackupLow
StormwaterLow
GroundwaterMinimal
CoastalMinimal
Infiltration CriteriaValue
Lot Impervious Area1,474 SF
Block Impervious %81%
Soil Infiltration Rate3 IN/HR
Available Area1,114 SF
Infiltration RatingModerate
Flood Exposure TypeScore
Infiltration CriteriaValue
Sewer BackupLow
Lot Impervious Area1,474 SF
StormwaterLow
Block Impervious %81%
GroundwaterMinimal
Soil Infiltration Rate3 IN/HR
CoastalMinimal
Available Area1,114 SF
Infiltration RatingModerate
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