: 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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According to the state Water Resources Department, reservoirs across California were holding approximately 33 million acre-feet of water as of Tuesday, April 21. Sacbee.com, 23 Apr. 2026 In 2022, the Bureau of Reclamation released an unprecedented 500,000 acre-feet (617 million cubic meters) of water from Flaming Gorge to raise Lake Powell. ABC News, 22 Apr. 2026 The city says moving the water to Cheesman Reservoir will prevent around 5,000 acre-feet of water from evaporating. Jennifer McRae, CBS News, 22 Apr. 2026 An acre-foot of water equals the approximate annual water use of three to four households, according to the utility. Elise Schmelzer, Denver Post, 20 Apr. 2026 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.grautoblog.com/dictionary/acre-foot. Accessed 28 Apr. 2026.

Kids Definition

acre-foot

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

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