Question: is nad83 the same as wgs84?
Answer: Answer: There are a number of difference between the NAD83 and the WGS84 datum. ... The North American 1983 datum (NAD83) uses the Geodetic Reference System (GRS80) ellipsoid while the World Geodetic System of 1984 (WGS84) uses the WGS 84 ellipsoid. The dimensions of these ellipsoids differ slightly.