An acre-foot is a unit of volume used to measure large water supplies and equals approximately 325,851 gallons.

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Prepare for the ADEQ Water Treatment Grade 4 Test. Study with flashcards and multiple-choice questions, with each question offering hints and explanations. Ace your exam!

Multiple Choice

An acre-foot is a unit of volume used to measure large water supplies and equals approximately 325,851 gallons.

Explanation:
An acre-foot is a practical, large-volume unit used in water resources to describe how much water is needed to cover one acre of land by a depth of one foot. The math shows why the figure is about 325,851 gallons: 1 acre equals 43,560 square feet, so 1 acre-foot is 43,560 cubic feet. Since 1 cubic foot holds about 7.4805 gallons, multiply 43,560 by 7.4805 to get approximately 325,851 gallons. So the statement is true. It isn’t 100,000 or 1,000,000 gallons, which are far off from the actual value.

An acre-foot is a practical, large-volume unit used in water resources to describe how much water is needed to cover one acre of land by a depth of one foot. The math shows why the figure is about 325,851 gallons: 1 acre equals 43,560 square feet, so 1 acre-foot is 43,560 cubic feet. Since 1 cubic foot holds about 7.4805 gallons, multiply 43,560 by 7.4805 to get approximately 325,851 gallons. So the statement is true. It isn’t 100,000 or 1,000,000 gallons, which are far off from the actual value.

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