: 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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An acre-foot is roughly 326,000 gallons, enough to supply two typical households for a year. Swasti Singhai, USA Today, 4 Aug. 2026 Its reservoir also offers 19,000 acre-feet of flood storage, showing how hydroelectric projects can combine generation with river management. Atharva Gosavi, Interesting Engineering, 4 Aug. 2026 Upper basin states, Colorado, New Mexico, Utah, and Wyoming, are being asked to voluntarily conserve 200,000 acre-feet a year. Shaun Boyd, CBS News, 1 Aug. 2026 The plan sets limits on how the river would be operated, and envisages water shortages of up to 3 million acre-feet per year in the three Lower Basin states. Reuters, NBC news, 31 July 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 6 Aug. 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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