Scientific Investigations Report 2009–5014
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2009–5014
Multiply | By | To obtain |
---|---|---|
Length | ||
inch (in.) | 2.54 | centimeter (cm) |
foot (ft) | 0.3048 | meter (m) |
foot per mile (ft/mi) | 0.1894 | meter per kilometer (m/km) |
mile (mi) | 1.609 | kilometer (km) |
Area | ||
acre | 4,047 | square meter (m2) |
square foot per day (ft2/d) | 0.09290 | square meter per day (m2/d) |
square foot (ft2) | 0.09290 | square meter (m2) |
square mile (mi2) | 2.590 | square kilometer (km2) |
Volume | ||
acre-foot (acre-ft) | 1,233 | cubic meter (m3) |
Flow rate | ||
cubic foot per second (ft3/s) | 0.02832 | cubic meter per second (m3/s) |
Transmissivity: The standard unit for transmissivity is cubic foot per day per square foot times foot of aquifer thickness [(ft3/d)/ft2]ft. In this report, the mathematically reduced form, foot squared per day (ft2/d), is used for convenience.
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.