Scientific Investigations Report 2006–5060

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5060

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Conversion Factors, Datums, Abbreviations, and Acronyms

Inch/Pound to SI

Multiply By To obtain
acre-foot (acre-ft) 1,233 cubic meter
cubic foot (ft3) 0.02832 cubic meter
cubic foot per second (ft3/s) 0.02832 cubic meter per second
foot (ft) 0.3048 meter
mile (mi) 1.609 kilometer
square foot (ft2) 0.09290 square meter
square mile (mi2) 2.590 square kilometer

SI to Inch/Pound

Multiply By To obtain
gram per cubic meter (g/m3) 0.002 pound per cubic foot
meter (m) 3.281 foot

    

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:

°F=(1.8×°C)+32.

    

Specific conductance is given in microsiemens per centimeter at 25 degrees Celsius (μS/cm at 25°C).

Concentrations of chemical constituents in water are given either in milligrams per liter (mg/L) or micrograms per liter (μg/L).

Datums

Vertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 (NGVD 29).

Horizontal coordinate information is referenced to the North American Datum of 1927 (NAD 27).

Abbreviations and Acronyms

Abbreviation or Acronym Definition
CWS Clean Water Services
EIS Environmental Impact Statement
JWC Joint Water Commission
LO Lake Oswego Corporation
RMSE root mean square error
N nitrogen
P phosphorus
SD standard deviation
TVID Tualatin Valley Irrigation District
USGS U.S. Geological Survey
7dADM 7-day running average of the daily maximum

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For more information about USGS activities in Oregon, visit the USGS Oregon Water Science Center home page.

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