Ask A Cartographer

ArcGIS online US Topo Maps Verticle Datum?

August 24 2011 | 0 comments
Categories: Map Data

What is the Vertical Datum used for the ArcGIS online US Topo Maps?

Mapping Center Answer:

Because the vertical datum is based on the datum of the data originally used, you can't tell unless the particular area/features have metadata, or you comparing values with known control points or benchmarks. It's even harder to tell than the horizontal coordinates.

If you would like to post a comment, please login.

Contact Us | Legal | Privacy |