(1) (Surface and Groundwater) The downstream flow of water through the permeable deposits underlying a stream. (2) (Water Quality) The slurry of concentrated solids or Sludge that is removed from the bottom of a Settling Tank, Clarifier, or Thickener.
UNDERFLOW
Meaning of UNDERFLOW in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012