VDatum for California

VDatum transformation software and documentation are available for download by clicking on the project name on the image map.

Reference

Myers, E. P., and Hess, K. W., 2006:   Modeling of Tidal Datum Fields in Support of VDatum Development along the North and Central Coasts of California,  U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Silver Spring, Maryland, NOAA Technical Memorandum, NOS CS 6, 15 p.

Disclaimer: Although many of the vertical datum transformations between the North American Vertical Datum of 1988 (NAVD 88) and mean sea level, and between mean sea level and the other tidal datums, are based on tidal values from the present National Tidal Datum Epoch (NTDE, 1983 to 2001), some are based on data from older tidal epochs. NOS is in the process of updating the data in VDatum to conform to the latest NTDE. In the meantime, care should be used when applying these transformations.