What is North American Vertical Datum of 1988?
The North American Vertical Datum of 1988 (NAVD 88) is a [[Geodetic datum|geodetic]] reference system used for measuring elevations in North America. It replaced the older National Geodetic Vertical Datum of 1929 (NGVD 29) and provides a standardized framework for mapping and surveying projects. <!-- NAVD 88 is based on a network of benchmarks distributed throughout North America, which serve as reference points for determining elevations. It takes into account factors like the Earth's gravitational field, tides, and land movements. The datum ensures accurate and consistent elevation measurements by providing a common reference for different projects and agencies. It is commonly used in engineering, construction, floodplain mapping, and scientific research. Elevation measurements using NAVD 88 are expressed in meters or feet above sea level. In some regions, local tidal datums may be used alongside NAVD 88 for more precise measurements. NAVD 88 plays a crucial role in facilitating data exchange and comparison across North America, promoting compatibility and consistency in elevation data. --> [[Category:Geography of North America]]