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Acre-Foot (US Survey)

The US survey acre-foot is a volume unit used primarily in the United States for measuring large water quantities, especially in land and water resource management.

It is based on the US survey foot, which differs slightly from the international foot.

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  1 US survey acre-foot ≈ 43,560 US survey cubic feet

  
  
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  Approximately 1,233.48 cubic meters (very close to the international acre-foot)

  
  

Summary:

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  Measures water volume over one acre to a depth of one foot (using US survey foot)

  
  
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  Used in surveying, agriculture, and water management

  
  
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  Slightly different from the international acre-foot due to foot definition