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CONVERSION FACTORS AND ABBREVIATED <br />WATER - QUALITY UNITS <br />Multiply <br />acre <br />acre -foot (acre -ft) <br />cubic foot per second (ft /s) <br />foot (ft) <br />foot per mile (ft /mi) <br />inch (in.) <br />inch per year (in /yr) <br />micrometer (dam) <br />mile (mi) <br />millimeter (mm) <br />square mile (mil) <br />By <br />0.4047 <br />1,233 <br />0.028317 <br />0.3048 <br />0.3048 <br />25.4 <br />25.4 <br />0.00003937 <br />1.609 <br />0.03937 <br />2.59 <br />To obtain <br />y. <br />hectare <br />cubic meter <br />cubic meter per second <br />meter <br />meter per kilometer <br />millimeter <br />millimeter per annum <br />inch <br />kilometer <br />inch <br />square kilometer <br />Temperature in degree Fahrenheit ( °F) can be converted to degree Celsius <br />( °C) as follows: <br />°C = 5/9( ° F -32). <br />Temperature in degree Celsius ( °C) can be converted to degree <br />Fahrenheit ( °F) as follows: <br />OF = 9/5( ° C) +32. <br />Abbreviated water - quality units used in this report: <br />microsiemens per centimeter at 25 degrees Celsius (pS /cm) <br />microgram per liter (fag /L) <br />milligram per liter (mg /L) <br />microgram per gram (fag /g) <br />microgram per kilogram (fag /Kg) <br />Dry- weight concentrations in biota samples may be converted to wet - weight <br />concentrations as follows: <br />Wet- weight concentration = [1- (percent moisture /100)] Dry- weight concentration. <br />vi <br />