Filter Total Items: 74
Date published: June 7, 2018
Status: Active

Chalk Cliffs, Colorado

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Real-time Data

The instrumentation was installed in the summer of 2008 and includes a series of three monitoring stations located along the main channel. Data from one of these stations (Station 1) is transmitted...

Contacts: Jason Kean, Jeffrey Coe, University of Colorado, East Carolina University
Date published: May 25, 2018
Status: Active

Tellurium in Igneous-related Epithermal Precious Metal Deposits in Colorado and New Mexico

The project aims to improve our understanding of the causes of tellurium enrichment in epithermal precious metal deposits, and strengthen our ability to assess the Nation's tellurium deposits. Tellurium is used in solar panel technologies and is considered a critical mineral. Epithermal deposits of this type represent a prospective future source of tellurium.

Date published: May 23, 2018
Status: Active

USGS Data at Risk: Expanding Legacy Data Inventory and Preservation Strategies

As one of the largest and oldest science organizations in the world, USGS has produced more than a century of earth science data, much of which  is currently unavailable to the greater scientific community due to inaccessible or obsolescent media, formats, and technology. These “legacy data” are  invaluable for extending our historical understanding of the world’s natural resources,...

Date published: May 10, 2018
Status: Active

Land Treatment Planning Tool

The Land Treatment Planning Tool provides a practical resource for managers who are planning restoration and rehabilitation actions on public lands. The tool generates a variety of spatial products while being user friendly for all levels of GIS expertise, even to those with little or no experience.

Date published: May 8, 2018
Status: Active

Application of Plasma Ionization Isotope Ratio Mass Spectrometry

This project will allow us to (1) develop innovative analytical techniques for isotope geochemistry and U-Pb geochronology using plasma ionization mass spectrometry and (2) apply our new analytical techniques to collaborative research projects of high priority to the Mineral Resources Program, including studies related to the U.S. midcontinent region and Alaska, and/or processes related to the...

Date published: May 1, 2018
Status: Active

Bird Banding Laboratory

The Bird Banding Laboratory (BBL) is an integrated scientific program established in 1920 supporting the collection, archiving, management and dissemination of information from banded and marked birds in North America.  This information is used to monitor the status and trends of resident and migratory bird populations. Because birds are good indicators of the health of the environment, the...

Date published: April 3, 2018
Status: Active

A Shallow- to Deep- View Inside the Hydrothermally-Altered and Mineralized Silverton Caldera Complex: New Geologic Insights Gained From Modern Geophysical Interpretations

The Silverton caldera complex in southwest Colorado hosts base and precious metals that have been mined since the late 1800s. Extensive mine workings, excellent bedrock exposures, and deeply incised drainages make this area a natural laboratory ideally suited for furthering our understanding of the mineral systems in a volcanic environment. In addition, state-of-the-art geophysical...

Date published: October 3, 2017

Colorado Plateaus Regional Groundwater Availability

Pilot phase

This study is in a pilot phase during fiscal years 2017 and 2018. The purpose of the pilot phase is to identify possible technical challenges of using the USGS code GSFLOW for simulating groundwater and surface-water flow in the Colorado Plateau principal aquifer system. During the pilot phase, the project will evaluate GSFLOW in the San Juan River Basin (...

Date published: September 30, 2017
Status: Completed

Paradox Valley Total Dissolved Solids (TDS) Regression Equations

The primary objective of the project is to evaluate and update previous regression equations, developed for the USGS streamgages and continuous water-quality records,that describe the relation between specific conductance measured in the Dolores River and calculated total dissolved solids TDS. A secondary objective is to evaluate brine discharge to the river using a previously developed...

Contacts: M. Alisa Mast
Date published: August 30, 2017

Reconstructing Flow History From Riparian Tree Rings

Aquatic Systems Branch scientists analyze rings of riparian trees relating tree growth and establishment to historical flow. We then use the tree rings to reconstruct the flow in past centuries. Flow reconstructions discover the frequency and magnitude of past droughts and floods—information that is essential for management of rivers and water supplies. We also use downscaled climate...

Date published: April 4, 2017
Status: Completed

Clear Creek Reservoir Bathymetry

To better characterize the water supply capacity of Clear Creek Reservoir, Chaffee County, Colorado, the U.S. Geological Survey, in cooperation with the Pueblo Board of Water Works and Colorado Mountain College, carried out a bathymetry survey of Clear Creek Reservoir. The equipment and methods used in this study allowed water-resource managers to maintain typical reservoir operations,...

Contacts: Michael S Kohn, P.E., Paul Kinzel, Jacob S. Mohrmann
Date published: February 2, 2017

Aquatic Experimental Laboratory (AXL)

Aquatic invertebrates are a key component of freshwater ecosystems, and an understanding of aquatic invertebrate taxonomy is central to freshwater science. The U.S. Geological Survey Aquatic Experimental Lab (AXL) at the Fort Collins Science Center has developed the North American Aquatic Macroinvertebrate Digital Reference Collection (NAAMDRC) to provide users with a graphic tool to aid in...

Contacts: David Walters, Ph.D., Robert E Zuellig, Ph.D., Boris Kondratieff