the volume contained by an acre, one foot deep.

The A measure of water storage capacity in a hydrosystem reservoir or a specific volume of water. One acre-foot is the volume of water needed to cover one acre to a depth of one foot. The average Ontario household of four uses about one acre-foot of water per year.

Unit of volume; one acre of producing formation one foot thick. One acre foot equals 7,758 barrels, 325,829 gallons or 43,560 cubic feet.

The amount of water it takes to cover one acre to a depth of one foot. This measure is used to describe the quantity of storage in a hydrosystem reservoir. An average household of four will use approximately one acre foot of water per year.

The volume of liquid or solid required to cover one acre to a depth of one foot, or 43,560 cubic feet; measure for volumes of water, reservoir rock, etc.