Engineering Concepts for Bioretention Facilities - Rutgers ...

Rain Garden Sizing Table
for NJ’s Water Quality Design Storm
Area of Impervious Size of 6” deep Rain Size of 12” deep Rain
Surface to be Treated Garden
Garden
(ft 2 )
(ft 2 ) or [w x d] (ft 2 ) or [w x d]
500 100 or 10’x10’ 50 or 10’x5’
750 150 or 15’x10’ 75 or 10’x7½’
1,000 200 or 20’x10’ 100 or 10’x10’
1,500 300 or 30’x10’ 150 or 15’x10’
2,000 400 or 20’x20’ 200 or 20’x10’