(ā′kər-ĭnch′)n. One twelfth of an acre-foot, equal to 3,630 cubic feet.
acre-inch
n (Units) the volume of water that would cover an area of 1 acre to a depth of 1 inch; one twelfth of an acre-foot: equivalent to 3630 cubic feet or 102.8 cubic metres
a′cre-inch′
n. one-twelfth of an acre-foot. [1905–10]
acre-inch
acre-inch
[′ā·kər ′inch] (hydrology) A unit of volume used in the United States for water flow, equal to 3630 cubic feet. Abbreviated acre-in.