Conversion Factors, Datums, and Abbreviations and Acronyms


Conversion Factors


Inch/Pound to SI


Multiply	By	To obtain
foot (ft)	0.3048	meter (m)
mile (mi)	1.609	kilometer (km)
square mile (mi2)	2.590	square kilometer (km2)
acre-foot (acre-ft)	1,233	cubic meter (m3)
foot per second (ft/s)	0.3048	meter per second (m/s)
cubic foot per second (ft3/s)	0.02832	cubic meter per second (m3/s)
square foot per second (ft2/s)	0.0929	square meter per second (m2/s)

SI to Inch/Pound


Multiply	By	To obtain
meter (m)	3.281	foot (ft)
cubic meter per second (m3/s)	70.07	acre-foot per day (acre-ft/d)
square meter per second (m2/s)	10.7639	square foot per second (ft2/s)




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


°F=(1.8×°C)+32.


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


°C=(°F-32)/1.8.

Datums


Vertical coordinate information is referenced to the North American Vertical Datum of 1988 (NAVD 88).


Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).


Elevation, as used in this report, refers to distance above the vertical datum.

Abbreviations and Acronyms


Abbreviation or acronym	Description
7dADM	7-day moving average of the daily maximum
ATU	Accumulated Thermal Unit
BiOP	Biological Opinion
CE-QUAL-W2	2-dimensional hydrodynamic and water-quality model
DMR	Discharge Monitoring Report
MAE	mean absolute error
ME	mean error
NCDC	National Climatic Data Center (National Oceanic and Atmospheric Administration)
NS	Nash-Sutcliffe coefficient
ODEQ	Oregon Department of Environmental Quality
RAWS	Remote Automated Weather Station
RM	river mile
RMSE	root mean square error
SRML	Solar Radiation Monitoring Laboratory (University of Oregon)
USGS	U.S. Geological Survey

First posted October 30, 2012

Revised June 11, 2013