Datum Transformations: NAD27 Shift to NAD83
Maps & Cartography

Geodetic Datums: NAD 27, NAD 83 and WGS84

Ellipsoids, survey benchmarks and triangulation – these are the ingredients for geodetic datums. NAD27, NAD83 and WGS84 are common datums in North America.

National Geodetic Survey Explorer
Maps & Cartography

NAD83 – We’re Not in Kansas Anymore

North American Datum of 1983 (NAD83) is 2-meters from geocentric and uses thousands of monuments with triangulation to create a reference frame for Earth

8484GPS WGS
Maps & Cartography

World Geodetic System (WGS84)

The World Geodetic System 1984 (WGS84) is the spatial reference system of GPS satellites with an error of less than 2 centimeters to the center of Earth.