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Data Series 269

U.S. GEOLOGICAL SURVEY
Data Series 269

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Conversion Factors, Datums, Abbreviations and Acronyms

Conversion Factors

Multiply By To obtain
inch (in.) 25.4 millimeter (mm)
foot (ft) 0.3048 meter (m)
mile (mi) 1.609 kilometer (km)

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 National Geodetic Vertical Datum of 1929 (NGVD 29).

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.

Abbreviations and Acronyms

Abbreviations and Acronyms Definition
CET Calibrated electric tape
DTW Depth to water
DTWR Depth to water rounded to the nearest foot
HP Hang point
MP Measuring point
NIST National Institute of Standards and Technology
NTS Nevada Test Site
UET Uncalibrated electric tape
USDOE U.S. Department of Energy
USGS U.S. Geological Survey

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