: 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.
An acre-foot of water is approximately enough to cover a football field in water and is generally considered the annual water use of two to four families. Elise Schmelzer, Denver Post, 7 June 2026 During the cool water releases in 2024, nearly 900,000 acre-feet of water bypassed the generators, costing $19 million in replacement energy costs, according to the Bureau of Reclamation. Dorany Pineda, Fortune, 27 May 2026 During the cool water releases in 2024, nearly 900,000 acre-feet of water bypassed the generators, costing $19 million in replacement energy costs, according to the Bureau of Reclamation. ABC News, 26 May 2026 The coalition’s plan says the region can secure up to 2 million acre-feet of local water per year. Ian James, Los Angeles Times, 25 May 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

Browse Nearby Words

Cite this Entry

“Acre-foot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acre-foot. Accessed 9 Jun. 2026.

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster