How Many Gallons Is An Acre Foot Of Water

Non-SI unit of book

acre-foot
An acre-human foot volume (not drawn to scale)
Full general data
Unit system	Us Customary units
Unit of	Book
Symbol	air-conditioning⋅ft
Conversions
i ac⋅ft in ...	... is equal to ...

SI units	≈ 1,233.5 mⁱⁱⁱ
Us customary units	43,560 cu ft
Us customary units	≈ 325,850 United states gal
Imperial units	≈ 271,330 imp gal

The acre-foot is a non-SI unit of volume equal to about one,233 one thousandⁱⁱⁱ commonly used in the United States in reference to large-scale water resource, such as reservoirs, aqueducts, canals, sewer catamenia capacity, irrigation water,^[1] and river flows.

An acre-pes equals approximately an viii-lane swimming pool, 82 ft (25 m) long, 52 ft (xvi m) wide and ix.8 ft (iii m) deep.

Definitions [edit]

As the proper noun suggests, an acre-foot is defined as the volume of ane acre of surface expanse to a depth of one foot.

Since an acre is defined equally a chain past a furlong (i.due east. 66 ft × 660 ft or twenty.12 m × 201.17 thou), an acre-foot is 43,560 cubic feet (i,233.5 yard³).

There are two definitions of an acre-foot (differing by nearly 0.0006%), depending on whether the "human foot" used is an "international foot" or a "U.S. survey foot".

1 acre-pes	= 43,560 cubic feet = 75,271,680 cu in
1 international acre-human foot	= 43,560 international cubic feet
	= 1,233.48183754752 1000³
	≈ 271,328.072596 imp gal
	= 325,851+ 3⁄seven US gal
i U.S. survey acre-foot	= 43,560 U.S. survey cubic anxiety
	≈ 1233.4892384681 m³
	≈ 271,329.700571 imp gal
	≈ 325,853.383688 U.S. gal^[a]

Awarding [edit]

As a rule of pollex in US water management, one acre-human foot is taken to exist the planned almanac h2o usage of a suburban family household.^[b] In some areas of the desert Southwest, where water conservation is followed and often enforced, a typical family uses but about 0.25 acre-foot of water per year.^[3] Ane acre-foot/year is approximately 119 cu ft/d (3.38 m^three/d).

The acre-pes (or more than specifically the time rate unit of acre-foot per yr) has been used historically in the U.s. in many water-management agreements, for example the Colorado River Compact, which divides 15 million acre-feet per year (590 cubic metres per 2nd) amidst seven western U.s.a. states.

Water reservoir capacities in the US are commonly given in thousands of acre-feet, abbreviated TAF or KAF.

In most other countries except the Us, the metric system is in common use and water volumes are commonly expressed in litre, cubic metre or cubic kilometre. 1 acre-foot is approximately equivalent to one.233 megalitres. Large bodies of water may be measured in cubic kilometres (one,000,000,000 m³, or 1000 gigaliter), with 1 million acre-feet approximately equalling ane.233 km³.

See as well [edit]

Cubic metre per second
Cubic human foot per 2nd
List of unusual units of measurement
United States customary units
Unit

Explanatory notes [edit]

^ This conversion assumes the international foot is used to define the U.S. gallon and the U.South. survey human foot to ascertain the acre human foot. If the same foot is used for both, the result is the 325,851+ iii⁄vii U.Southward. gal effigy as obtained previously.
^ The country of Montana assumes 1.0 acre-foot per yr for a family unit of five.^[2]

Citations [edit]

^ "NM OSE Glossary". Archived from the original on 14 November 2005. Retrieved xv March 2014.
^ Water Rights Bureau; land of Montana (xiii April 2004). "Course No. 627 R8/03 Notice of Water Right" (PDF). Archived from the original (PDF) on 25 January 2008. Retrieved thirty January 2008.
^ Santa Atomic number 26, New Mexico charge per unit averages 0.25 acre-foot per year per household. Run across Planning Partitioning, Planning & Land Utilise Department, Metropolis of Santa Fe, New United mexican states (February 2001). "Water Apply in Santa Iron: A survey of residential and commercial water use in the Santa Atomic number 26 urban area". Archived from the original (PDF) on 22 July 2012. Retrieved xxx January 2008.