A stormwater design feature that provides for the gradual release of a volume of water (0.25 - 1.0 inches per impervious acre) over a 12 to 48 hour interval time to increase settling of urban pollutants, and protect channel from frequent flooding.
EXTENDED DETENTION (ED)
Meaning of EXTENDED DETENTION (ED) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012