Conversion Factors and Datums


Conversion Factors


Inch/Pound to SI

Multiply	By	To obtain
mile (mi)	1.609	kilometer (km)

SI to Inch/Pound

Multiply	By	To obtain
millimeter (mm)	0.03937	inch (in.)
meter (m)	3.281	foot (ft)
kilometer (km)	0.6214	mile (mi)
square meter (m2)	1,550.0	square inch (in2)
hectare (ha)	2.471	acre
cubic meter (m3)	35.31	cubic foot (ft2)
millimeter per second (mm/s)	0.03937	inch per second (in/s)
centimeter per second (cm/s)	0.3937	inch per second (in/s)
meter per second (m/s)	3.281	foot per second (ft/s)
meter squared per second (m2/s)	10.76	foot squared per second (ft2)

Datums


Vertical coordinate information is referenced to the Bureau of Reclamation datum, which is 1.78 feet above National Geodetic Vertical Datum of 1929 (NAVD 29).


Horizontal coordinate information is referenced to the North American Datum of 1927 (NAD 27).


Elevation and lake level, as used in this report, refer to distance above the vertical datum.

First posted January 31, 2014