Geology
September 9, 2020
Recent STATEMAP quadrangles
The CGS actively participates in the STATEMAP portion of…
Search
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.
August 12, 2020
OF-19-10 Landslide Inventory and Susceptibility Map of Teller County, Colorado
This CGS study 1) evaluates and maps known and previously unmapped landslide deposits with the aid of new high-resolution light…
June 8, 2020
OF-18-05 Geologic Map of the Antero Reservoir NE Quadrangle, Park County, Colorado
Adding to our coverage of the South Park region in the central Rocky Mountains of Colorado,…
May 23, 2020
OF-18-04 Geologic Map of the Florence Quadrangle, Fremont County, Colorado
The purpose of this map is to describe the geology, mineral and ground-water resource potential, and geologic hazards of this…
May 18, 2020
OF-19-08 Geologic Map of the Mesa Lakes Quadrangle, Mesa and Delta Counties, Colorado
The purpose of this map is to describe the geology, mineral and ground-water resource potential, and geologic hazards of this…
Geology
April 24, 2020
OF-19-03 Geologic Map of the La Salle Quadrangle, Weld County, Colorado
As we continue to expand geological mapping coverage of Colorado, we recently uploaded another of our…
February 6, 2020
OF-19-03 Geologic Map of the La Salle Quadrangle, Weld County, Colorado
The purpose of this map is to describe the geology, mineral and ground-water resource potential, and geologic hazards of this…
January 8, 2020
OF-18-03 Geologic Map of the Lands End Quadrangle, Mesa County, Colorado
Extending previous CGS mapping efforts on the Grand Mesa in the Western Slope region the state, this publication describes the…
General
October 21, 2019
GIS Data and Web Map Portal
GIS Data :: Web Maps Intro GIS Map Index GIS Data Downloads Storymaps As an agency heavily involved with spatial…
Geology
October 11, 2019
Statemap
Statemap Intro Advisory Committee Maps STATEMAP is a competitive, matching-funds grant program between the state geological surveys and the…
Geology
October 11, 2019
Mapping
Geologic Mapping Much of the CGS website is under heavy re-construction and will be…
August 1, 2019
ON-001 Colorado Earthquake and Fault Map
Updated with the most recent field research, this fully online ON-001 Colorado Earthquake and Fault Map…
June 13, 2019
OF-19-06 Landslide Inventory and Susceptibility Map of Boulder County, Colorado
This CGS study seeks to 1) evaluate and map known and previously unmapped landslide deposits with the aid of new…
December 20, 2018
OF-18-02 Geologic Map of the Milliken Quadrangle, Weld County, Colorado
Extending previous CGS mapping efforts along the Front Range region the state, this publication describes the geology of this 7.5-minute…
December 15, 2018
OF-18-11 Debris Flow Susceptibility Map of El Paso County, Colorado
This map is intended for use by planners and regulators to support review of site-specific geologic hazard reports submitted for…
December 10, 2018
OF-18-10 Debris Flow Susceptibility Map of Jefferson County, Colorado
This map is intended for use by planners and regulators to support review of site-specific geologic hazard reports submitted for…
December 5, 2018
OF-18-01 Geologic Map of the Frederick Quadrangle, Weld and Broomfield Counties, Colorado
Extending previous CGS mapping efforts along the Front Range region the state, this publication describes the geology of this 7.5-minute…
November 5, 2018
OF-18-08 Debris Flow Susceptibility Map of Douglas County, Colorado
This map is intended for use by planners and regulators to support review of site-specific geologic hazard reports submitted for…
December 6, 2017
OF-17-05 Geologic Map of the Fountain Quadrangle, El Paso County, Colorado
The purpose of this report is to describe the geology, mineral and ground-water resource potential, and geologic hazards of this…
November 20, 2017
OF-17-04 Geologic Map of the Hartsel Quadrangle, Park County, Colorado
The purpose of this map is to describe the geology, mineral and groundwater resource potential, and geologic hazards of this…
October 11, 2017
OF-17-03 Geologic Map of the Berthoud Quadrangle, Larimer, Weld, and Boulder Counties, Colorado
The purpose of this map is to describe the geology, mineral and ground-water resource potential, and geologic hazards of this…
September 11, 2017
OF-17-02 Geologic Map of the Johnstown Quadrangle, Larimer and Weld Counties, Colorado
The purpose of this map is to describe the geology, mineral and ground-water resource potential, and geologic hazards of this…
June 29, 2017
OF-17-06 Geologic Map of the Boreas Pass Quadrangle, Park and Summit Counties, Colorado
Extending the CGS mapping efforts in the central portion of the state, this publication describes the geology of this 7.5-minute…
Geology
June 27, 2017
OF-16-02 Geologic Map of the Watkins Quadrangle, Arapahoe and Adams Counties, Colorado
We’ve just uploaded the next of our free STATEMAP quadrangle map products to…
Geology
April 12, 2017
OF-16-05 Geologic Map of the Longmont Quadrangle, Boulder and Weld Counties, Colorado
We just uploaded the most recent of our STATEMAP mapping products to…
August 23, 2016
OF-16-06 Geologic Map of the Roubideau Quadrangle, Delta and Montrose Counties, Colorado
The purpose of this geologic map is to describe the geology, mineral and ground-water resource potential, and geologic hazards of…
June 21, 2016
OF-16-02 Geologic Map of the Watkins Quadrangle, Arapahoe and Adams Counties, Colorado
The purpose of this map is to describe the geology, mineral and ground-water resource potential, and geologic hazards of this…
April 12, 2016
OF-16-05 Geologic Map of the Longmont Quadrangle, Boulder and Weld Counties, Colorado
The purpose of this map is to describe the geology, mineral and ground-water resource potential, and geologic hazards of this…
January 23, 2016
OF-16-07 Geologic Map of the Ralph White Lake Quadrangle, Moffat and Routt Counties, Colorado
Extending the CGS mapping efforts in the far northwest corner of the state, this publication describes the geology of this…
December 23, 2015
OF-15-14 Geologic Map of the Mack Quadrangle, Mesa County, Colorado
Extending previous CGS mapping efforts on the Western Slope of Colorado, this publication describes the geology…