User:Revent

From OpenStreetMap Wiki
Jump to navigation Jump to search

US Government Datasets converted from WGS84(Original) to WGS84(G2139)

It should be noted that "This list does not necessarily represent a comprehensive collection of all Department of Defense facilities, and only those in the fifty United States and US Territories were considered for inclusion."
Military facilities in Guam are also omitted from the transformed version, due to a lack of a clear source datum.

US Government Datasets converted from NAD83(1986) to WGS(G2139)

12 locations are omitted, due to being outside the areas supported by the NADCON 5.0 files.

not published separately, extracted from 2023 USGS National Boundary Dataset

Note that this boundary is demonstrably "not good." Coordinates differ by as much as 30 feet (on the California border) from the location derived from transforming the coordinates of the monuments from NGS datasheets.