: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Warning Issued As People Told To Stay out of Sun Lake Mead is the largest reservoir in the U.S., with a capacity of nearly 29 million acre-feet of water. Joe Edwards, MSNBC Newsweek, 30 May 2025 For context, Western U.S. households tend to consume about half an acre-foot of water every year. Sharon Udasin, The Hill, 27 May 2025 The researchers estimated that pumping from wells has drained about 34 cubic kilometers, or 28 million acre-feet, of groundwater in the watershed since 2003 — more than twice the amount of water that has been depleted from the river’s reservoirs during that time. Ian James, Los Angeles Times, 27 May 2025 Lake Mead is the largest reservoir in the U.S., with a capacity of nearly 29 million acre-feet of water. Joe Edwards, MSNBC Newsweek, 16 May 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 3 Jun. 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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