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This 1:50,000-scale geologic map represents a compilation of the most recent geologic studies of the upper Arkansas River valley, between Leadville and Salida, Colorado. The valley is structurally...
Search relevance: 141.80 | Views last month: 12 | Catalog Last Checked: May 05, 2026 at 09:13 PM -
The Leadville North 7.5' quadrangle lies at the northern end of the Upper Arkansas Valley, where the Continental Divide at Tennessee Pass creates a low drainage divide between the Colorado and...
Search relevance: 78.83 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 09:15 PM -
The Homestake Reservoir 7.5' quadrangle lies at the northwestern end of the Upper Arkansas Valley, and headwaters of the Arkansas River, and the Roaring Fork, Fryingpan, and Eagle Rivers of...
Search relevance: 69.48 | Views last month: 1 | Catalog Last Checked: May 05, 2026 at 07:25 PM -
This data release contains environmental tracer model inputs, outputs, and model results. Dataset includes environmental tracer concentrations, simulated recharge conditions (water temperature,...
Search relevance: 63.69 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 07:35 PM -
Short-term aquifer tests were conducted to estimate hydraulic properties in an alluvial aquifer. Tests included eight single-hole pumping and recovery tests and three slug tests (in a single...
Search relevance: 61.93 | Views last month: 3 | Catalog Last Checked: May 05, 2026 at 08:48 PM -
This data release includes data collected from the Villa Grove helicopter magnetic survey in northern San Luis Valley and Poncha Pass region in south-central Colorado, USA. The survey area...
Search relevance: 61.83 | Views last month: 12 | Catalog Last Checked: May 05, 2026 at 08:06 PM -
The U.S. Geological Survey in cooperation with the Upper Arkansas Water Conservancy District, created a numerical groundwater-flow model for the Wet Mountain Valley alluvial aquifer using the...
Search relevance: 57.79 | Views last month: 0 | Catalog Last Checked: May 05, 2026 at 08:50 PM -
From 2022 through 2024, the U.S. Geological Survey (USGS) conducted a study in cooperation with the Arkansas River Basin Regional Resources Planning Group (Southeastern Colorado Water Conservancy...
Search relevance: 50.76 | Views last month: 0 | Catalog Last Checked: May 05, 2026 at 10:13 PM -
This dataset captures in digital form the results of previously published U.S. Geological Survey (USGS) Water Mission Area studies related to water resource assessment of Cenozoic strata and...
Search relevance: 41.78 | Views last month: 15 | Catalog Last Checked: May 05, 2026 at 08:08 PM -
This dataset captures in digital form the results of previously published U.S. Geological Survey (USGS) Water Mission Area studies related to water resource assessment of Cenozoic strata and...
Search relevance: 38.93 | Views last month: 3 | Catalog Last Checked: May 05, 2026 at 10:12 PM -
This data release includes Al-26/Be-10 cosmogenic nuclide concentrations and burial isochron ages for three locations in central Colorado, USA, with preferred burial ages ranging from ~2 Ma to 600...
Search relevance: 38.91 | Views last month: 0 | Catalog Last Checked: May 05, 2026 at 10:17 PM -
The information in this dataset is from "Feasibility of Infiltration Galleries for Managed Aquifer Recharge in the Northeast Arkansas Delta" by Godwin et al., 2020. Included in the dataset are the...
Search relevance: 34.95 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 11:45 PM -
This release presents the GIS data (in GDB, shapefile, and e00 [coverage] formats) and metadata for a 1:24,000-scale geologic map of the Poncha Pass area in central Colorado. A...
Search relevance: 25.12 | Views last month: 9 | Catalog Last Checked: May 05, 2026 at 08:45 PM -
This map shows the structural configuration on the top of the Cotton Valley Group in feet below sea level. The map was produced by calculating the difference between a datum at the land surface...
Search relevance: 25.07 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 09:47 PM -
This isopach map shows the thickness of the interval from the top of the Cotton Valley Group to the top of the Smackover Formation. It was necessary to contour this expanded interval, instead of...
Search relevance: 24.83 | Views last month: 1 | Catalog Last Checked: May 05, 2026 at 08:35 PM -
Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production, and distribution of production in an assessment...
Search relevance: 24.43 | Views last month: 3 | Catalog Last Checked: May 05, 2026 at 08:17 PM -
The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of...
Search relevance: 24.36 | Views last month: 3 | Catalog Last Checked: May 05, 2026 at 09:48 PM -
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual...
Search relevance: 22.92 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 09:15 PM -
As part of an effort by the U.S. Geological Survey (USGS) to better understand topographic and structural conditions that promote slow spreading and sagging of mountain ridges (Varnes and others,...
Search relevance: 20.59 | Views last month: 0 | Catalog Last Checked: May 05, 2026 at 07:27 PM -
Bald Eagle ridge, located about 14 km west of Leadville, Colorado, is slowly spreading and sagging, resulting in sackungen that have been monitored by the U.S. Geological Survey (USGS) since the...
Search relevance: 18.26 | Views last month: 0 | Catalog Last Checked: May 05, 2026 at 09:11 PM
