https://www.asce.org/publications-and-news/civil-engineering-source/civil-engineering-magazine/issues/magazine-issue/article/2020/11/getting-the-height-right-the-north-american-vertical-datum-of-1988/
Getting the height right: The North American Vertical Datum of 1988 | ASCE
The success of the North American Vertical Datum of 1988 has set the stage for its replacement.
the heightnorth americanvertical datumgettingright
https://www.ontario.ca/page/go-its-544tes-cgvd2013-official-geodetic-vertical-datum-ontario
GO-ITS 544TES CGVD2013 official geodetic vertical datum for Ontario | ontario.ca
Apr 10, 2025 - This standard defines the official geodetic vertical datum for Ontario as the Canadian Geodetic Vertical Datum of 2013 (CGVD2013).
vertical datumfor ontariogoofficial
https://www.usgs.gov/faqs/what-are-projection-horizontal-and-vertical-datum-format-and-distributed-tile-extent-3d
What are the projection, horizontal and vertical datum, format, and distributed tile extent of 3D...
Contours are not projected, but are provided in geographic coordinates (latitude and longitude) in units of decimal degrees, and horizontally referenced to the...