You searched for: “acre foot
1. The volume of water that would cover an area of one acre to a depth of one foot, equal to 1,233.5 cubic meters (43,560 cubic feet).
2. A unit that is sometimes used to measure large volumes of water; such as, the capacity of a reservoir (equal to its area in acres multiplied by its average depth in feet).
This entry is located in the following unit: Measurements and Mathematics Terms (page 1)