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Scientific Investigations Report 2007–5258

Scientific Investigations Report 2007–5258

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Conversion Factors, Datums, and Acronyms

Conversion Factors

Multiply By To obtain
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) 0.1894 meter per kilometer (m/km)
inch (in.) 2.54 centimeter (cm)
inch (in.) 25.4 millimeter (mm)
mile (mi) 1.609 kilometer (km)
square mile (mi2) 2.590 square kilometer (km2)

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



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.


Acronym Definition
BFI Base Flow Index
DEM digital elevation model
GIS geographic information system
GPS Global Positioning System
IDWR Idaho Department of Water Resources
NWIS National Water Information System
NWS National Weather Service
PDSI Palmer Drought Severity Index
RTK real-time kinematic
USGS U.S. Geological Survey
USEPA U.S. Environmental Protection Agency

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