TABLE 1
CONVERSION FACTORS AND ABBREVIATIONS
This conversion table is for the convenience of readers who may prefer to use metric units instead
of the English units given in this report.
MULTIPLY
inch (in)
foot (ft)
mile (mi)
gallon (gal)
gallons (gal)
gallons per minute (gallmin)
gallons per minute per foot
[ (gal/min) /ft]
gallons per minute (gpm)
cubic feet per second (cfs)
pound avoirdupois (Ib)
ton, short
25.4
0.3048
1.609
3.785
0.003785
0.06308
0.207
0.0022
449
0.4536
0.9072
TO OBTAIN
millimeter (mm)
meter (m)
kilometer (km)
liter (L)
cubic meter (m3
liter per second (L/s)
liter per second per
meter [ (L/s) I/m]
cubic feet per second (cfs)
gallons per minute (gpm)
kilogram (kg)
megagram (Mg)
Chemical concentrations and water temperatures are given in metric units. Chemical concentra-
tion is given in milligrams per liter (mg/L) or micrograms per liter (ug/L). Milligrams per liter is a unit
expressing the concentration of chemical constituents in solution as weight (milligrams) of solute
per unit volume (liter) of water. One thousand micrograms per liter is equivalent to one milligram per
liter. For concentrations less than 7,000 mg/L, the numerical value is the same as for concentrations
in parts per million.
Water temperature is given in degrees Celsius (OC), which can be converted to degrees Fahrenheit
(F) by the following equation:
(F = 1.8 (oC) + 32.
Sea level: In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD
of 1929) a geodetic datum derived from a general adjustment of the first-order level nets of both
the United States and Canada, formerly called "Mean Sea Level of 1929."