The average of water-year (October 1-September 30) runoff or the supply of water produced by a given stream or water development project for a total period of record; measured in cubic feet per second or acre-feet.
AVERAGE ANNUAL RUNOFF (YIELD)
Meaning of AVERAGE ANNUAL RUNOFF (YIELD) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012