March 14, 2023
OF-20-04 Geologic Map of the Cedaredge Quadrangle, Delta County, Colorado
The purpose of this publication is to describe the geology, geologic resources, and geologic hazards of this 7.5-minute quadrangle. It…
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March 8, 2023
OF-22-02 Geologic Map of the Brighton Quadrangle, Adams County, Colorado
The purpose of this publication is to describe the geology, geologic resources, and geologic hazards of this 7.5-minute quadrangle. It…
February 21, 2023
OF-22-09 Geochronology and Geomorphic Mapping to Estimate Debris-flow Depositional Ages and Recurrence Intervals Along State Highways 145 and 62, San Miguel County, Colorado
Debris-flows are a common problem in the mountainous areas of the state, and this project—requested and funded by the…
December 9, 2022
OF-22-11 Geologic Map of the Mount Evans Quadrangle, Clear Creek and Park Counties, Colorado
The purpose of this map is to describe the geology, mineral and ground-water resource potential, and geologic hazards of this…
November 11, 2022
OF-20-06 Geologic Map of the Kersey Quadrangle, Weld County, Colorado
The purpose of this publication is to describe the geology, geologic resources, and geologic hazards of this 7.5-minute quadrangle. It…
November 11, 2022
OF-21-01 Geologic Map of the Barnesville Quadrangle, Weld County, Colorado
The purpose of this publication is to describe the geology, geologic resources, and geologic hazards of this 7.5-minute quadrangle. It…
October 13, 2022
ON-004-01M STATEMAP Progression Map
This online map contains the most recent information on what geologic field mapping the CGS is undertaking within the USGS…
September 20, 2022
ON-006-14M Landslide Inventory of Summit County, Colorado (Map) – v20220920
This GIS map contains the most current information for this project. GIS data is currently not available for download. Online…
August 11, 2022
ON-006-13M Landslide Inventory of Clear Creek County, Colorado (Map) – v20220811
This GIS map contains the most current information for this project. GIS data is currently not available for download. Online…
February 22, 2022
ON-007-09M Reconnaissance Map of Sand, Gravel, and Quarry Aggregate Resources, Elbert County, Colorado (Map) – v20220223
The dataset and map produced during this project is a reconnaissance survey of aggregate resources in Elbert County and was…
February 22, 2022
ON-007-09D Reconnaissance Map of Sand, Gravel, and Quarry Aggregate Resources, Elbert County, Colorado (Data) – v20220223
The dataset and map produced during this project is a reconnaissance survey of aggregate resources in Elbert County and was…
February 15, 2022
ON-006-12M Debris-flow Susceptibility of Select Colorado Counties (Map) – v20220215
This GIS map contains the most current information for this project. It presently includes Larimer, Boulder, Jefferson, Douglas, and El…
February 8, 2022
ON-006-11M Landslide Inventory of El Paso County, Colorado (Map) – v20220208
This GIS map contains the most current information for this project. GIS data is currently not available for download. Online…
February 1, 2022
ON-006-01M Colorado Landslide Inventory (Map) – v20220201
This GIS map is a compilation of all mapped landslides that have been published in geologic and geologic hazard maps…
December 13, 2021
OF-19-02 Geologic Map of the Gowanda Quadrangle, Weld County, Colorado
Extending previous CGS mapping efforts along the Front Range region of the state, this publication describes the geology of this…
December 7, 2021
OF-21-04 Geologic Map of the Hardin Quadrangle, Weld County, Colorado
The purpose of this report is to describe the geology, geologic resources and geologic hazards of this 7.5-minute quadrangle located…
Geology
June 3, 2021
New GIS data and maps
For those of you who are subscribers to the CGS announcement list, we want to direct your attention to a…
Geology
April 26, 2021
Recent STATEMAP quadrangles
The CGS actively participates in the STATEMAP portion of…
March 17, 2021
ON-007-03M Mineral Resource Potential Derivative (Map)
Mineral resource potential derivative maps were generated using 7.5 minute quadrangles published under the CGS STATEMAP geological mapping program.
March 4, 2021
ON-010-02M Colorado Statewide Alluvial Aquifer (Map)
This GIS map is of alluvial deposits along streams and rivers throughout Colorado that have the potential for forming alluvial…
March 4, 2021
ON-010M Colorado Groundwater Atlas (Map) – v20210304
This map is comprised of statewide GIS data compiled as of 04 March 2021. Online GIS resource. ON-010M (Note: “Add…
February 22, 2021
OF-19-05 Geologic Map of the Hells Kitchen Quadrangle, Delta and Mesa Counties, Colorado
The purpose of this publication is to describe the geology, geologic resources, and geologic hazards of this 7.5-minute quadrangle. It…
February 15, 2021
ON-B-40M Radioactive Mineral Occurrences of Colorado and Bibliography (Map)
The data comprising this GIS map was digitized in 2020 and is a partial compilation of the 1978 CGS publication…
February 4, 2021
OF-20-05 Geologic Map of the Greeley Quadrangle, Weld County, Colorado
Continuing our ongoing mapping efforts along the Front Range Urban Corridor region of the state, this…
February 1, 2021
OF-20-03 Geologic Map of the Bracewell Quadrangle, Weld County, Colorado
The purpose of this report is to describe the geology, geologic resources and geologic hazards of this 7.5-minute quadrangle located…
November 12, 2020
ON-007-08M Historic Metal Mining Districts of Colorado (Map) – v20201112
This GIS map contains the most current information for this project and is comprised of GIS data and written documentation…
Geology
September 9, 2020
Recent STATEMAP quadrangles
The CGS actively participates in the STATEMAP portion of…
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…