acre foot
/ˈeɪkər ˌfʊt/
noun
- A unit of volume used for large quantities of water, equal to the amount of water that would cover one acre of land to a depth of one foot (about 325,851 gallons or 1,233 cubic meters).
- A single acre-foot of water can supply a typical family of four for about one year.
- The city's water treatment plant processes over 10,000 acre-feet of water each year.
- The dam's reservoir has a capacity of 50,000 acre-feet to provide water during dry seasons.