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acre-foot

[ ey-ker-foot ]

noun

  1. a unit of volume of water in irrigation: the amount covering one acre to a depth of one foot, equal to 43,560 cubic feet.


acre-foot

noun

  1. the volume of water that would cover an area of 1 acre to a depth of 1 foot: equivalent to 43 560 cubic feet or 1233.5 cubic metres
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of acre-foot1

An Americanism dating back to 1900–05
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Example Sentences

Many farmers decided that the payments — $300 per acre-foot of water conserved — would pencil out for them this year, in part because hay prices have recently fallen.

The legislation increases fines for violations of state water curtailment to as much as $10,000 per day, plus $2,500 for each acre-foot of water diverted.

State officials also compared the costs of additional supplies from the tunnel, at $1,325 per acre-foot, to the costs of additional supplies through investments in desalination, wastewater recycling, stormwater capture and conservation.

An acre-foot is roughly enough to serve two to three U.S. households annually.

An acre-foot serves about two to three U.S. households per year.

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acredacre-inch