Cart
Boulder oil field, 1915. Photo credit: C. L. McClure and the Denver Public Library.

History of the CGS

Since 1910, the Colorado Geological Survey has brought the best of Colorado geoscience to you, our public constituency


Much of the CGS website is under heavy re-construction and will be for some time. The Publications area is working normally, but there is a lot of content from our original site that was in desperate need of updating. Please bear with us as we gather new information and rewrite hundreds of pages of material, gather and properly caption high-resolution images and otherwise bring you some very cool new and archival material never before seen! Stay in touch by subscribing to the >RockTalk< blog where we will announce new items periodically.


The most current incarnation of the CGS came into existence in the mid-1960s.

  • 1967 – The legislature re-creates the Colorado Geological Survey within the newly formed Department of Natural Resources.
  • 1969 – The Colorado Geological Survey becomes operational.
  • 1987 – The Colorado Avalanche Information Center (CAIC) becomes part of the Colorado Geological Survey.
  • 1992 – The Colorado Geological Survey is placed under the newly formed Division of Minerals and Geology, a regulatory agency.
  • 2005 – The legislature re-establishes the Colorado Geological Survey as a separate Division in the Department of Natural Resources.
  • 2013 – CGS is transferred to the Colorado School of Mines.

We are now located in the Moly Building on the west side of the campus of the Colorado School of Mines, with around fifteen geoscience and support staff.