Which of the following is most similar in volume to an acre-foot of water?

A) 20 million gallons
B) 9 football fields covered with one-tenth of a foot of water
C) an acre covered with 3 feet 1 meter) of water
D) a square mile covered with 1 foot of water

Acre-Foot

A unit of volume used in the United States to measure large-scale water resources, such as in reservoirs or irrigation, equal to the volume of water required to cover one acre of land one foot deep.

Football Fields

Standard units of measurement representing the playing area for American football, approximately 360 feet in length and 160 feet in width.

Gallons

Gallons are a unit of volume used primarily in the United States to measure liquids and gases, equivalent to 3.785 liters.