The Geographic Coordinate Data Base Project (GCDB) is one of BLM's top priorities. Currently, we are collecting and attributing data. As this information becomes available, it will be added to this site.
GCDB Overview for an explanation of our data products, access and services. How to Access GCDB Data.
GCDB Availability Map - A graphical index of GCDB data. (Last Updated: June 1, 2000) Overview | Detailed
Geographic Coordinate Database Archive - Access to MT-NE | MT-NW | MT-SE | MT-SW | ND-5th PM | SD-5th PM | SD-6th PM | SD-BHM data. (continually updated)
Create DXF Files, Quick View Data on Screen. Click here to download GMM2DXF.ZIP.
Convert Between NAD-27 and NAD-83. Click here to download CONVERT.ZIP
GCDB User's Guide for a description of data base and contents.
GCDB National Homepage for indepth information about GCDB, coverages and flat file data.