Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The volume of water, 43,560 cubic feet, that will cover an area of one acre to a depth of one foot.

from The Century Dictionary.

  • noun A unit of volume of water used in irrigation, equivalent to one acre covered one foot in depth, or 43,560 cubic feet.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A unit of volume equal to an acre times a foot, about 1233.5 kiloliters, or 66 feet by 660 feet by 1 foot.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the volume of water that would cover 1 acre to a depth of 1 foot; 43,560 cubic feet or 1233.5 cubic meters

Etymologies

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Examples

  • While saving another 300,000 acre-feet seems small in comparison with the two million acre-foot reduction already achieved, it is still a lot of water that had to be captured, stored, pumped, treated, delivered, and retreated as wastewater.

    Peter H. Gleick: What Do You Know? Water Conservation and Efficiency Actually Work Peter H. Gleick 2011

  • An acre-foot is roughly the amount of water used by a family of four in a year.

    Wet Winter Can't Slake West's Thirst Jim Carlton 2011

  • * An acre-foot is the quantity of water needed to cover one acre to a depth of one foot, equivalent to about 325,850 gallons.

    Colossus Michael Hiltzik 2010

  • An acre-foot, about 326,000 gallons, can meet the annual water needs of up to two U.S. households.

    Warm Colorado Winter Worrying NM Farmers AP 2010

  • An acre-foot, about 326,000 gallons, can meet the annual water needs of up to two U.S. households.

    Warm Colorado Winter Worrying NM Farmers AP 2010

  • * An acre-foot is the quantity of water needed to cover one acre to a depth of one foot, equivalent to about 325,850 gallons.

    Colossus Michael Hiltzik 2010

  • Poseidon estimates its water will cost $1,200 per acre-foot (AF), offset by a $250 per AF subsidy from the Metropolitan Water District as well as hundreds of millions of dollars in tax-free state bonds.

    Steve Fleischli: Getting More Out of the Men's Room 2009

  • "The state is offering about $275 per acre-foot of water, which is a reasonable deal," said Mr. Bransford, who has been growing rice for 29 years.

    Drought Turns Water Into a Cash Crop 2009

  • An acre-foot, equal to slightly less than 326,000 gallons, is roughly the amount two suburban households consume in a year.

    Drought Turns Water Into a Cash Crop 2009

  • For the organic systems that translates into about 3,670 lbs of CO2 per acre-foot per year -- and that's not even counting the reductions in CO2 emissions represented by the fact that organic farming uses just 63 percent of the energy required by conventional farming systems, largely because of the massive amounts of energy required to synthesize nitrogen fertilizer.

    Wendy Gordon: Orange is Greener When It's Organic 2009

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