: 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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The Kern Fan Project, which would store only up to 100,000 acre-feet of water, is not scheduled to even receive a hearing for its funding until 2028 and would not be operational until 2031. Daniel Kolkey, Oc Register, 9 Mar. 2026 The lowest inflow on record occurred in 2002, when less than 1 million acre-feet made its way to the reservoir. Elise Schmelzer, Denver Post, 9 Mar. 2026 That could yield another 30,000 acre-feet annually. Evan Bush, NBC news, 7 Mar. 2026 If other states and agencies sign on, Denham said the Water Authority is prepared to sell up to 10,000 acre-feet of water starting next year. Ian James, Los Angeles Times, 3 Mar. 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.merriam-webster.com/dictionary/acre-foot. Accessed 16 Mar. 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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