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Acre foot

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An acre-foot. (Not exact)

An acre-foot is a unit of volume used in the United States to measure large amounts of water resources. It makes measuring water in reservoirs, lakes, and rivers.[1]

An acre-foot is the amount of water it would take to cover an acre of land with water 1 foot (0.30 m) deep. One acre-foot of water is the same as 43,560 cubic feet (1,233 m3) of water. It is about the same amount of water as a 8-lane, 25 m long competition swimming pool.


The typical American family uses about 1 acre-foot of water in a year or about 892.72 US gallons (3,379.3 l; 743.34 imp gal) per day.[2] In some places in the deserts of the Southwestern United States, water conservation is a rule. In these ares, a normal family only uses 0.25 acre-feet of water per year.[3]

Large amounts of water can also be in thousands of acre-feet or TAF.


  1. "NM OSE Glossary". Archived from the original on 14 November 2005. Retrieved 15 March 2014. 
  2. Water Rights Bureau; state of Montana (April 13, 2004). "Form No. 627 R8/03 Notice of Water Right" (PDF). Archived from the original on 2008-01-25. Retrieved 2008-01-30. 
  3. ((Planning Division, Planning & Land Use Department, City of Santa Fe, New Mexico)) (February 2001). "Water Use in Santa Fe: A survey of residential and commercial water use in the Santa Fe urban area" (PDF). Retrieved 2008-01-30.