Geospatial Environmental
Mapping System
Welcome to the Geospatial Environmental Mapping System.

The Geospatial Environmental Mapping System (GEMS) was designed to provide dynamic mapping and environmental monitoring data display for sites managed by the U.S. Department of Energy (DOE) Office of Legacy Management.

The information made available and the environmental data display tools developed for GEMS are the result of input from various stakeholders including DOE and contractor staff, regulatory agencies, and members of the public. Any comments or suggestions pertaining to GEMS should be sent to the email address provided below as future enhancements are planned.

  • If you are new to the application, check out our quick, informative Tutorial.
  • Read, understand & accept our Terms of Use.
  • Questions and comments about GEMS can be sent to
Now Available in beta release: GEMS 2.0
Check out what's new in GEMS!

To Use the Older Version of GEMS, Select a Site Below.

Launch Classic GEMS Map Viewer Launch NEW GEMS 2.0 Map Viewer*

Launch Classic GEMS Map Viewer

*Please note: GEMS 2.0 is available in beta release. For more information or to submit comments, e-mail

The web map viewer uses licensed Geocortex® IMF technology