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Multiply By To obtain
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inch (in.) 2.54 centimeter
inch per year (in/yr) 2.54 centimeter per year
foot (ft) 0.3048 meter
mile (mi) 1.609 kilometer
acre 0.004047 square kilometer
square mile (mi2) 2.590 square kilometer
pound (lb) 0.4536 kilogram
ton 0.9072 metric ton
pound per square mile (lb/mi2) 1.1748 kilogram per square kilometer
acre-foot (acre-ft) 1,233 cubic meter
cubic foot per second (ft3/s) 0.02832 cubic meter per second
cubic foot per second per square mile [(ft3/s)/mi2] 0.01093 cubic meter per second per square kilometer
gallon per minute (gal/min) 0.06309 liter per second
million gallons per day (Mgal/d) 0.04381 cubic meter per second
foot per mile (ft/mi) 0.1894 meter per kilometer
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Temperature in degrees Fahrenheit (°F) may be converted to degrees Celsius (°C) as follows:
°C = (°F - 32) / 1.8
Sea level : In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929--a geodetic datum derived from a general adjustment of the first-order level nets of the United States and Canada, formerly called Sea Level Datum of 1929.
Altitude, as used in this report, refers to distance above or below sea level.
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