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Data Series 340

U.S. GEOLOGICAL SURVEY
Data Series 340

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Conversion Factors and Datums

Conversion Factors

Multiply By To obtain
foot (ft) 0.3048 meter (m)
acre 0.4047 hectare (ha)
acre 43,560 square foot (ft2)
acre 4,047 square meter (m2)
acre-foot (acre-ft) 1,233 cubic meter (m3)
acre-foot (acre-ft) 0.325851 million gallons (Mgal)
million gallons (Mgal) 3,785 cubic meters (m3)
million gallons (Mgal) 3,785 million liters (Mliters)
acre-foot per year (acre-ft/yr) 1,233 cubic meter per year (m3/yr)
million gallons per year (Mgal/yr) 3,785 cubic meter per year (m3/yr)

Datums

Vertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 (NGVD 29).

Horizontal coordinate information is referenced to the North American Datum of 1927 (NAD 27).

Altitude, as used in this report, refers to distance above the vertical datum.

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