: 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.
Arizona is under a Tier 1 shortage for 2025, resulting in 512,000 acre-feet less water, or about 30% of the Central Arizona Project’s typical supply. Hayleigh Evans, AZCentral.com, 9 July 2025 The conservation storage has increased by more than 50,000 acre-feet in just 48 hours, reflecting the intensity of rainfall across the Guadalupe River basin. Hannah Parry amanda Castro, MSNBC Newsweek, 7 July 2025 For reference, the average U.S. household consumes about half an acre-foot of water annually. Sharon Udasin, The Hill, 24 June 2025 Lake Mead is the largest reservoir in the U.S., capable of storing approximately 29 million acre-feet of water. Joe Edwards, MSNBC Newsweek, 6 July 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 23 Jul. 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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