Unified Interior Regions

Region 7: Upper Colorado Basin

Map of Region 7: Upper Colorado Basin

Map of Region 7:  Upper Colorado Basin

Map Showing USGS/DOI Unified Region 7 and parts of adjoining Regions

Regions L2 Landing Page Tabs

USGS Science Centers in Region 7-Upper Colorado Basin conduct a large number of cooperative and collaborative projects with other agencies and partners. A sampling of those projects are shown below on this web page.

Filter Total Items: 386
Date published: August 1, 2002
Status: Completed

Blue River Water-Quality Data

The Blue River drains approximately 680 square miles west of the Continental Divide in central Colorado before flowing northward into the Colorado River near Kremmling, Colorado. The Blue River watershed (BRW) is almost entirely located in Summit County and includes the towns of Breckenridge, Dillon, Frisco, Montezuma, and Silverthorne. Dillon Reservoir and Green Mountain Reservoir are major...

Contacts: Nancy J Bauch
Date published: May 20, 2002
Status: Completed

Hydrologic assessment of groundwater resources in a foothills watershed in Jefferson County, Colorado

Water quantity, water-quality, and growth issues are of concern to Jefferson County, Colorado, officials who must balance the needs of current (2002) residents and requests for future development with protection and allocation of available water resources.

The current status of groundwater resources in the mountainous parts of Jefferson County must be determined as a basis for...

Contacts: Suzanne Paschke
Date published: May 10, 2002
Status: Completed

Using GIS and Multivariate Regressions to Model Salt and Selenium Loads in Regions of the Upper Colorado River Basin

Elevated loads of salt and selenium can impair the quality of water for both anthropogenic and natural uses. Understanding the environmental processes controlling how salt and selenium are introduced to streams is critical to managing and mitigating the effects of elevated loads. Dominant relations between salt and selenium loads and environmental characteristics can be established by using...

Date published: November 15, 2001
Status: Archived

SAGEMAP

A GIS Database for Sage-grouse and Shrubsteppe Management in the Intermountain West

Contacts: Steven E Hanser
Date published: October 1, 2001
Status: Completed

Water-Quality Sampling at Five Hydrologic Benchmark Stations in the Western United States

The Hydrologic Benchmark Network (HBN) was established in 1963 to provide  Swiftwater Creek, MT long-term measurements of streamflow and water quality in areas of the United States that are minimally affected by human activities. Historically, the HBN has used a fixed-interval sampling strategy, however other more robust sampling strategies are now available. Trend networks, for example, can...

Date published: June 19, 2000
Status: Completed

NAWQA South Platte River Basin Study

The South Platte River Basin study, conducted as part of the U.S. Geological Survey's National Water-Quality Assessment Program, combines information on water chemistry, physical characteristics, stream habitat, and aquatic life to provide science-based insights for current and...

Date published: May 15, 2000
Status: Completed

Water-Quality Monitoring of the Vallecito Reservoir Watershed

The water quality of the Vallecito Reservoir watershed in southwestern Colorado was initially studied by the U.S. Geological Survey (USGS) during July 1996 to July 1997, in cooperation with the Pine River Irrigation District, to assess the suitability of the reservoir as a potential source of drinking water (Ranalli and Evans, 1999). As a result of this study, in December 1997 a group of...

Contacts: Nancy J Bauch
Date published: October 31, 1998
Status: Completed

Effects of increasing urbanization on ground- and surface-water resources in the Fraser River watershed

The USGS has assessed the effects of increasing urbanization on ground- and surface-water resources in the Fraser River watershed. The population of Grand County increased 93 percent between the years of 1970 and 1990. The majority of the new development in the watershed will rely on ground water and individual septic disposal systems (ISDS's). This study has assessed the potential effects of...

Contacts: Nancy J Bauch
Date published: April 2, 1998
Status: Completed

Effects of Fluvial Tailings Deposits on Receiving Waters in the Upper Arkansas River Basin, Lake County, Colorado

Fluvial tailings deposits stored in the floodplain of the upper Arkansas River represent a potential nonpoint source of contamination to surface and ground waters. The U.S. Geological Survey has been cooperating with the U.S. Environmental Protection Agency to monitor a lowcost, insitu remediation technique for the deposits. Remediation of selected sites occurred in 1998 through 2000 by...

Date published: May 23, 1997
Status: Active

Groundwater-level data for the Albuquerque Basin and Adjacent Areas

The Albuquerque hydrologic basin extends along the Rio Grande from Cochiti in the north to San Acacia in the south. Increases in groundwater pumping to accommodate population growth in the basin resulted in substantial groundwater-level drawdown in some areas.

Contacts: Joseph E Beman
Date published: May 22, 1997
Status: Archived

Groundwater Monitoring in the Espanola Basin Piezometers

In 1996, the U.S. Geological Survey, in cooperation with the City of Santa Fe, and the New Mexico Office of the State Engineer began a drilling program to install specialized monitoring wells in the Espanola basin. The purpose of the program is to monitor hydraulic head at specific depths in the aquifer. Most of these specialized wells, called piezometers, are located in areas between major...

Contacts: Joseph E Beman
Date published: May 22, 1997
Status: Active

Groundwater-Level Monitoring in Middle Rio Grande Basin Piezometers

In 1996, the U.S. Geological Survey, in cooperation with the New Mexico Office of the State Engineer and the Albuquerque Bernallilo County Water Utility Authority, began a drilling program to install specialized monitoring wells in the Middle Rio Grande Basin. The purpose of the program is to monitor hydraulic head at specific depths in the aquifer (fig. 1). Most of these specialized wells,...

Contacts: Joseph E Beman

USGS Science Centers in Region 7-Upper Colorado Basin produce hundreds of USGS-series publications, journal papers, and books each year that are subject to rigorous review by USGS specialists. The publications shown below on this page are related to study areas and staff members of USGS Science Centers in Region 7 compiled from the USGS Publications Warehouse.

Filter Total Items: 5,146
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Year Published: 2019

Economic analysis for U.S. Geological Survey Coal Basin Assessments

This report presents economic principles and applications as they pertain to the U.S. Geological Survey’s U.S. Coal Resources and Reserves Assessment Project. This report compares commercial and governmental applications of economic principles and evaluation techniques. Common practices are described for evaluating the commercial...

Pierce, Paul E.
Pierce, P.E., 2019, Economic analysis for U.S. Geological Survey coal basin assessments: U.S. Geological Survey Open-File Report 2019–1082, 33 p., https://doi.org/10.3133/ofr20191082.

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Year Published: 2019

Exposure and potential effects of pesticides and pharmaceuticals in protected streams of the US National Park Service southeast Region

Globally protected areas offer refugia for a broad range of taxa including threatened and endangered species. The United States National Park Service (NPS) manages public lands to preserve biodiversity, but increasing park visitation and development of surrounding landscapes increase exposure to and effects from bioactive contaminants. The risk (...

Bradley, Paul; Romanok, Kristin; Duncan, Jeffrey R.; Battaglin, William; Clark, Jimmy; Hladik, Michelle; Huffman, Bradley; Iwanowicz, Luke; Journey, Celeste A.; Smalling, Kelly

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Year Published: 2019

Earthquakes, ShakeMap

ShakeMap® is an open-source software program employed to automatically produce a suite of maps and products that portray the geographical extent and severity of potentially damaging shaking following an earthquake. ShakeMap’s primary purpose is to provide post-earthquake situational awareness for emergency management and response as well as damage...

Wald, David J.; Worden, Charles; Thompson, Eric M.; Hearne, Mike

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Year Published: 2019

Is the timing, pace and success of the monarch migration associated with sun angle?

A basic question concerning the monarch butterfly’s fall migration is which monarchs succeed in reaching overwintering sites in Mexico, which fail—and why. We document the timing and pace of the fall migration, ask whether the sun’s position in the sky is associated with the pace of the migration, and whether timing affects success in completing...

Taylor, Orley R.; Lovett, James P; Gibo, David L; Weiser, Emily L.; Thogmartin, Wayne E.; Semmens, Darius J.; Diffendorfer, James E.; Pleasants, John M.; Pecoraro, Samuel; Grundel, Ralph

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Year Published: 2019

The August 2018 Kaktovik earthquakes: Active tectonics in northeastern Alaska revealed With InSAR and seismology

The largest earthquakes recorded in northern Alaska (Mw 6.4 and Mw 6.0) occurred ~6 hours apart on August 12, 2018 in the northeastern Brooks Range. The earthquakes were captured by Sentinel-1 InSAR satellites and Earthscope Transportable Array seismic data, giving insight into the little-known active tectonic processes of Arctic Alaska, obscured...

Gaudreau, E.; Nissen, E.K.; Bergman, Eric A.; Benz, Harley M.; Tan, F.; Karasözen, E.

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Year Published: 2019

Offset channels may not accurately record strike-slip fault displacement: Evidence from landscape evolution models

Slip distribution, slip rate, and slip per event for strike‐slip faults are commonly determined by correlating offset stream channels—under the assumption that they record seismic slip—but offset channels are formed by the interplay of tectonic and geomorphic processes. To constrain offset channel development under known tectonic and geomorphic...

Reitman, Nadine G.; Mueller, Karl J.; Tucker, Gregory E.; Gold, Ryan D.; Briggs, Richard W.; Barnhart, Katherine R.

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Year Published: 2019

Assessment of continuous oil and gas resources in the Mississippian Delle Phosphatic Member of the Woodman Formation in the Eastern Great Basin Province of Nevada, Utah, and Idaho, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 144 million barrels of shale oil and 559 billion cubic feet of shale gas in the Mississippian Delle Phosphatic Member of the Woodman Formation in the Eastern Great Basin Province of Nevada, Utah, and Idaho.

Schenk, Christopher J.; Mercier, Tracey J.; Finn, Thomas M.; Marra, Kristen R.; Le, Phuong A.; Brownfield, Michael E.; Leathers-Miller, Heidi M.
Schenk, C.J., Mercier, T.J., Finn, T.M., Marra, K.R., Le, P.A., Brownfield, M.E., and Leathers-Miller, H.M., 2019, Assessment of continuous oil and gas resources in the Mississippian Delle Phosphatic Member of the Woodman Formation in the Eastern Great Basin Province of Nevada, Utah, and Idaho, 2019: U.S. Geological Survey Fact Sheet 2019–3062, 2 p., https://doi.org/10.3133/fs20193062.

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Year Published: 2019

Geochemistry and geophysics of iron oxide-apatite deposits and associated waste piles with implications for potential rare earth element resources from ore and historic mine waste in the eastern Adirondack Highlands, New York, USA

The iron oxide-apatite (IOA) deposits of the eastern Adirondack Highlands, New York, are historical high-grade magnetite mines that contain variable concentrations of rare earth element (REE)-bearing apatite crystals. The majority of the deposits are hosted within sodically altered Lyon Mountain granite gneiss, although some deposits occur within...

Taylor, Ryan; Shah, Anjana K.; Walsh, Gregory; Taylor, Cliff D.

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Year Published: 2019

Finding the gaps in America’s magnetic maps

No abstract available.

Drenth, Benjamin J.; Grauch, V. J.

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Year Published: 2019

Pyritization history in the middle to upper Cambrian Alum Shale, Scania Sweden: Evidence for ongoing diagenetic processes

Detailed diagenetic studies of the late Cambrian Alum Shale in southern Sweden were undertaken across an interval that includes the peak Steptoean Positive Carbon Isotope Excursion (SPICE) event to evaluate the pyrite mineralization history in the formation. Samples were collected from the Andrarum-3 core (Scania, Sweden); here the Alum was...

Fishman, Neil S.; Egenhoff, Sven O.; Lowers, Heather A.; Boehlke, Adam; Ahlberg, Per

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Year Published: 2019

A shallow rift basin segmented in space and time: The southern San Luis Basin, Rio Grande rift, northern New Mexico, U.S.A.

Interpretation of gravity, magnetotelluric, and aeromagnetic data in conjunction with geologic constraints reveals details of basin geometry, thickness, and spatiotemporal evolution of the southern San Luis Basin, one of the major basins of the northern Rio Grande rift. Spatial variations of low-density basin-fill thickness are estimated primarily...

Drenth, Benjamin J.; Grauch, V. J.; Turner, Kenzie J.; Rodriguez, Brian D.; Thompson, Ren A.; Bauer, Paul W.

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Year Published: 2019

The 2018 update of the US National Seismic Hazard Model: Overview of model and implications

During 2017–2018, the National Seismic Hazard Model for the conterminous United States was updated as follows: (1) an updated seismicity catalog was incorporated, which includes new earthquakes that occurred from 2013 to 2017; (2) in the central and eastern United States (CEUS), new ground motion models were updated that incorporate updated median...

Petersen, Mark D.; Shumway, Allison; Powers, Peter M.; Mueller, Charles; Moschetti, Morgan P.; Frankel, Arthur; Rezaeian, Sanaz; McNamara, Daniel E.; Luco, Nicolas; Boyd, Oliver S.; Rukstales, Kenneth S.; Jaiswal, Kishor; Thompson, Eric M.; Hoover, Susan M.; Clayton, Brandon; Field, Edward H.; Zeng, Yuehua

Photos and videos described and linked on this webpage come from a wide variety of USGS science activities and presentations performed by USGS Science Center staff members in the Region 7-Upper Colorado Basin.

Filter Total Items: 517
Bacteria contained in filter chambers placed in downgradient observation wells were exposed to sulfamethoxazole
October 1, 2012

Bacteria contained in filter chambers

Microbial-Contaminant Interactions Laboratory — Boulder, Colorado. Bacteria contained in filter chambers placed in downgradient observation wells were exposed to sulfamethoxazole for 30 days as it traveled past the wells.

Bacteria contained in filter chambers placed in downgradient observation wells were exposed to sulfamethoxazole for 30 days
October 1, 2012

Bacteria contained in filter chambers

Bacteria contained in filter chambers placed in downgradient observation wells were exposed to sulfamethoxazole for 30 days as it traveled past the wells

Prairie dog and SPV bait
August 7, 2012

Prairie dog and SPV bait

In this image, a Gunnison prairie dog eats a bait laden with the sylvatic plague vaccine. Prairie dogs in the wild are less likely to succumb to plague after they ingest peanut-butter-flavored bait that contains a vaccine against the disease.

Image: Utah Tribal Coop
June 6, 2012

Utah Tribal Coop

In the stream is Martel Fisher (USGS) and Bart Powaukee (Coordinator Ute Indian Tribe Water Quality Department) and some of the Ute Tribe Water Quality Department employees.

Red Mountain CO
April 22, 2012

Red Mountain, CO Hydrothermal Alteration

Photo showing intense acid-sulfate hydrothermal alteration on Red Mountain No. 2, Silverton CO. View is looking to the west across Corkscrew Gulch. 

Canadian escarpment rising above the plains, northeastern San Miguel County, NMWSC
January 31, 2012

San Miguel Site Map, New Mexico Water Science Center

Canadian escarpment rising above the plains, northeastern San Miguel County, NMWSC

Lava tube opening/possible bat roost with pine forest above.
December 31, 2011

Lava tube opening/possible bat roost with pine forest above.

Opening of a large lava tube at El Malpais National Monument in western New Mexico and likely roost for bats, 2011.

View from sandstone bluff overlooking extinct lava flows at El Malpais National Monument, New Mexico.
December 31, 2011

View from sandstone bluff overlooking extinct lava flows at El Malpais

View from sandstone bluff overlooking extinct lava flows at El Malpais National Monument, New Mexico.

Sunset at the uranium mines at the Grand Canyon, NM.
December 31, 2011

Sunset at the uranium mines at the Grand Canyon, NM.

Sunset at the uranium mines at the Grand Canyon, NM. 

November 17, 2011

PubTalk 11/2011 — Colorado River High-Flow Experiments

- a story of Grand Canyon geology, water, and biology

by Jack Schmidt & David Rubin

 

  • New insights from recent Glen Canyon Dam high-flow experiments on the Colorado River
  • Are these high flows doing more than building large sand bars in Grand Canyon National Park?
  • The challenge of adaptively managing
False-color-composite satellite image of Great Salt Lake, Nov 2011
November 2, 2011

Great Salt Lake

This is a false-color-composite satellite image of Great Salt Lake, Nov 2011. The vegetation appears red.

This page includes links to Social Media accounts (top of page), Science Centers (middle of page), and Regional Office staff members (bottom of page) of the USGS Region 7--Upper Colorado Basin.