The North American Vertical Datum of 1988 (NAVD 88) is the vertical datum for orthometric heights established for vertical control surveying in the United...

professionals include the National Geodetic Vertical Datum of 1929 and the North American Vertical Datum of 1988. In common usage, elevations are often cited...

measurements. Vertical measurements, based on distances above or below Mean High Water (MHW), are calculated using the North American Vertical Datum of 1988 (NAVD...

the elevation of a point above and depression below mean sea level (MSL). NGVD29 was superseded by the North American Vertical Datum of 1988 (NAVD 88), based...

the North American Vertical Datum of 1988, which is the reference point for determining altitude in North America. Since 1986, the Government of Canada...

resulted in the North American Datum (horizontal) of 1927 (NAD27) and the Vertical Datum of 1929 (NAVD29), the first standard datums available for public...

states of the contiguous United States include an elevation adjustment from the National Geodetic Vertical Datum of 1929 (NGVD 29) to the North American Vertical...

adjustment from the National Geodetic Vertical Datum of 1929 (NGVD 29) to the North American Vertical Datum of 1988 (NAVD 88). For further information,...

the North American Vertical Datum of 1988 (NAVD 88). All geographic coordinates are adjusted to the World Geodetic System of 1984 (WGS 84). The mean elevation...

World Geodetic System of 1984 (WGS 84). North American topographic elevations are adjusted to the North American Vertical Datum of 1988 (NAVD 88). Use the...