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<br />CONVERSION FACTORS, VERTICAL DATUM, AND ABBREVIATED WATER-QUALITY UNITS <br /> <br />Multiply <br /> <br />By <br /> <br />To obtain <br /> <br />w <br />W' <br />c:..l' <br />:iJ' <br /> <br />inch (in.) <br />foot (ft) <br />foot per day (flld) <br />mile (mi) <br />square mile (mi2) <br />cubic foot per second (ft3/s) <br />gallon per minute (gal/min) <br />acre <br />acre-foot (acre-ft) <br />acre-foot per day (acre-ftld) <br />acre-foot per year (acre-fllyr) <br /> <br />0.0254 <br />0.3048 <br />0.3048 <br />1.609 <br />2.590 <br />0.02832 <br />0.0631 <br />0.4047 <br />0.001233 <br />0.001233 <br />0.001233 <br /> <br />meter <br />meter <br />meter per day <br />kilometer <br />square kilometer <br />cubic meter per second <br />liter per second <br />hectare <br />cubic hectometer <br />cubic hectometer per day <br />cubic hectometer per year <br /> <br />Degree Celsius (OC) may be converted to degree Fahrenheit (OF) by using the following equation: <br />of = 9/S(oC)+32. <br /> <br />Degree Fahrenheit (OF) may be converted to degree Celsius (oC) by using the following equation: <br />oC = 5/9(OF-32). <br /> <br />Sea level: In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 - a geodetic datum <br />derived from a general adjustment of the first-order level nets of the United States and Canada, formerly called Sea <br />Level Datum of 1929. <br /> <br />Chemical concentration and water temperature are reported only in metric units. Chemical concentration is <br />reported in milligrams per liter (mglL) or micrograms per liter (llglL). Milligrams per liter is a unit expressing the <br />solute per unit volume (liter) of water. One thousand micrograms per liter is equivalent to I milligram per liter. For <br />concentrations less than 7,000 milligrams per liter, the numerical value is about the same as for concentrations in <br />parts per million. Specific conductance is reported in microsiemens per centimeter (IlS/cm) at 25 degrees Celsius. <br /> <br />vi <br />