Scientific Investigations Report 2006-5111

Scientific Investigations Report 2006-5111

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Conversion Factors, Datums, and Abbreviations

Inch/Pound to SI

Multiply By To obtain
cubic foot (ft3) 0.02832 cubic meter (m3)
cubic foot per second (ft3/s) 0.02832 cubic meter per second (m3/s)
foot (ft) 0.3048 meter (m)
foot per mile (ft/mi) 0.189394 meter per km (m/km)
inch (in.) 2.54 centimeter (cm)
mile (mi) 1.609 kilometer (km)
square mile (mi2) 2.590 square kilometer (km2)

SI to Inch/Pound

Multiply By To obtain
gram (g) 0.03527 ounce, avoirdupois (oz)
meter (m) 1.094 yard (yd)
millimeter (mm) 0.03937 inch (in.)

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


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).


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).

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


Abbreviation Definition
BLM Bureau of Land Managment
BMP best management practice
BOR Bureau of Reclamation
Corps U.S. Army Corps or Engineers
CPUE catch per unit effort
DEM digital elevation model
DRG digital raster graphic
EMAP Environmental Monitoring and Assessment Program (EPA)
EPA U.S. Environmental Protection Agency
GIS Geographic Information System
IBI Index of Biotic Integrity
IDEQ Idaho Department of Environmental Quality
IDFG Idaho Department of Fish and Game
IDWR Idaho Department of Water Resources
IHA Indicators of Hydrologic Alteration
IPC Idaho Power Company
NAWQA National Water Quality Assessment (USGS)
NMFS National Marine Fisheries Service
NPDES non-point discharges and elimination system
NWIS National Water Information System (USGS)
TMDL total daily maximum load
USGS U.S. Geological Survey
WTF wastewater-treatment facility

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