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Scientific Investigations Report 2006–5323

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5323

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Conversion Factors, Datums, and Abbreviations and Acronyms

Conversion Factors

Multiply By To obtain
cubic foot per second (ft3/s) 0.02832 cubic meter per second
foot (ft) 0.3048 meter
inch (in.) 2.54 centimeter
inch (in.) 25.4 millimeter
mile (mi) 1.609 kilometer
square mile (mi2) 259.0 hectare
square mile (mi2) 2.590 square kilometer

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 Mean Lower Low Water (MLLW).

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 Meaning
AKDOTPF Alaska Department of Transportation and Public Facilities
CORS Continuously Operating Reference Stations
FEMA Federal Emergency Management Agency
FIS Flood Insurance Study
GPS Global Positioning System
HEC-RAS U.S. Army Corps of Engineers’ Hydrologic Engineering Center River Analysis System
LIDAR Light Detection and Ranging
NGS National Geodetic Survey
RTK Real-Time Kinetic
USGS U.S. Geological Survey

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