What are Geodetic Datums?

 

This video from NOAA  explains the basic concepts behind Geodetic Datums, where they are used and why it is important to know about using the correct datum.

 

What are Geodetic Datums

What are Geodetic Datums

 

Also see these links about Geodetic Datums via NGS:

About NAD 83 (2011)

FAQ’s about Datums