: the volume (as of irrigation water) that would cover one acre to a depth of one foot

Examples of acre-foot in a Sentence

Recent Examples on the Web
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Together, these two reservoirs now contain about 7 million acre-feet of water. Calmatters, Mercury News, 1 Apr. 2025 Mexico is entitled to 1.5 million acre-feet of Colorado River water each year, in line with the artery’s historic flow of from Colorado to the Gulf of California in the Mexican state of Sonora. Sharon Udasin, The Hill, 29 Mar. 2025 Under the treaty, The U.S. is required to deliver 1.5 million acre-feet of water to Mexico each year and Mexico is required to deliver an average of 350,000 acre-feet of water to the U.S. annually over a five-year period. Thomas G. Moukawsher, Newsweek, 21 Mar. 2025 The plan would have increased the size of Los Vaqueros, near Brentwood, from 160,000 acre-feet to 275,000 acre-feet. Paul Rogers, The Mercury News, 20 Mar. 2025 See All Example Sentences for acre-foot

Word History

First Known Use

1889, in the meaning defined above

Time Traveler
The first known use of acre-foot was in 1889

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Cite this Entry

“Acre-foot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acre-foot. Accessed 4 Apr. 2025.

Kids Definition

acre-foot

noun
: the volume (as of irrigation water) that would cover one acre to a depth of one foot

More from Merriam-Webster on acre-foot

Last Updated: - Updated example sentences
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