USGS Water Resources Investigations Report 00-4261--Conversion Factors, Vertical Datum, Abbreviated Units, and Acronyms

Conversion Factors, Vertical Datum, Abbreviated Units, and Acronyms

Multiply	By	To obtain
cubic foot per second (ft3/s)	0.028317	cubic meter per second (m3/s)
foot (ft)	0.3048	meter (m)
foot per second (ft/s)	0.3048	meter per second (m/s)
gallon (gal)	3.785	liter
gallon per minute (gal/min, gpm)	0.06309	liter per second (L/s)
inch (in.)	25.4	millimeter (mm)
mile (mi)	1.609	kilometer
pound	453.6	gram

Degree Celsius (°C) may be converted to degree Fahrenheit (°F) by using the following equation: °F = 9/5(°C)+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 Sea Level Datum of 1929.

Abbreviated units and acronyms used in this report:

g/L	grams per liter	μm	micrometer
L	liter	μS/cm	microsiemens per centimeter at 25 degrees Celsius
L/s	liters per second	ANC	Acid-neutralizing capacity
μg/L	micrograms per liter	NGVD	National Geodetic Vertical Datum
μg/s	micrograms per second	NWQL	National Water Quality Laboratory, Lakewood, Colo.
mg/L	milligrams per liter	RPD	relative percent difference
mL/min	milliliters per minute	USDA-Forest Service	U.S. Department of Agriculture-Forest Service
mg/s	milligrams per second	USGS	U.S. Geological Survey
mL/s	milliliters per second

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