Unified Interior Regions

Region 7: Upper Colorado Basin

Map of Region 7 Upper Colorado River Basin

Map of Region 7 Upper Colorado River 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: 4,993
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Year Published: 2019

Science needs for continued development of total nitrogen deposition budgets in the United States

The objectives of this white paper are to describe the state of the science with respect to total Nr deposition budgets in North America and the research needed to improve these budgets from both a measurement and modeling standpoint. The document is intended to serve as a plan for TDep research activities but also, more broadly, to provide...

Wetherbee, Gregory A.; Templar, Pamela H.; Richard V. Pouyat; Stephen M. Decina; Brian M. Kerschner; Thomas H. Whitlow; Pamela E. Padgett; Donna B. Schwede; Baron, Jill; Clow, David; Mast, Alisa; Sexstone, Graham A.; Kristi H. Morris
National Atmospheric Deposition Program, Total Deposition Science Committee, 2019, Science needs for continued development of total nitrogen deposition budgets in the United States, Gregory Beachley and John Walker, eds., NADP Program Office, University of Wisconsin, Madison.

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Year Published: 2019

Root-driven weathering impacts on mineral-organic associations in deep soils over pedogenic time scales

Plant roots are critical weathering agents in deep soils, yet the impact of resulting mineral transformations on the vast deep soil carbon (C) reservoir are largely unknown. Root-driven weathering of primary minerals may cause the formation of reactive secondary minerals, which protect mineral-organic associations (MOAs) for centuries or millennia...

Arredondo, Mariela Garcia; Lawrence, Corey; Schulz, Marjorie S.; Tfaily, Malak M.; Kukkadapu, Ravi K.; Jones, Morris E.; Boye, Kristin; Keiluweit, Marco

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Year Published: 2019

Water-budget analysis of the Upper Big Sandy Designated Ground-water Basin alluvial aquifer, Elbert, El Paso, and Lincoln Counties, Colorado, 2016

The U.S. Geological Survey in cooperation with the Colorado Water Conservation Board and the Upper Big Sandy Groundwater Management District carried out a study in 2016 to evaluate potential groundwater storage changes within the Upper Big Sandy Designated Groundwater Basin (UBSDGB) alluvial aquifer, including groundwater flow between the UBSDGB...

Kohn, Michael S.; Oden, Jeannette H.; Arnold, L. R.
Kohn, M.S., Oden, J.H., and Arnold, L.R., 2019, Water-budget analysis of the Upper Big Sandy Designated Ground-water Basin alluvial aquifer, Elbert, El Paso, and Lincoln Counties, Colorado, 2016: U.S. Geological Survey Scientific Investigations Report 2019-5049, 25 p., https://dx.doi.org/10.3133/sir20195049.

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Year Published: 2019

Reactivity of As and U co-occurring in mine wastes in northeastern Arizona

The reactivity of co-occurring arsenic (As) and uranium (U) in mine wastes was investigated using batch reactors, microscopy, spectroscopy, and aqueous chemistry. Analyses of field samples collected in proximity to mine wastes in northeastern Arizona confirm the presence of As and U in soils and surrounding waters, as reported in a previous study...

Blake, Johanna; Avasarala, Sumant; Ali, Abdul-Mehdi; Spilde, Michael; Lezama-Pacheco, Juan S; Latta, Drew; Artyushkova, Kateryna; Ilgen, Anastasia G; Christopher Shuey; Christopher Nez; Cerrato, Jose M

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Year Published: 2019

Seismic loss and damage in light-frame wood buildings from sequences of induced earthquakes

Activities related to oil and gas production, especially deep disposal of wastewater, have led to sequences of induced earthquakes in the central U.S. This study aims to quantify damage to and seismic losses for light-frame wood buildings when subjected to sequences of induced, small to moderate magnitude, events. To conduct this investigation,...

Chase, Robert E; Liel, Abbie B.; Luco, Nicolas; Baird, Bridger W

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Year Published: 2019

Developing and testing physically based triggering thresholds for runoff‐generated debris flows

Runoff in steep channels is capable of transitioning into debris flows with hazardous implications for downstream communities and infrastructure, particularly in alpine landscapes with minimal vegetation and areas recently disturbed by wildfire. Here, we derive thresholds for the initiation of runoff‐generated debris flows based on critical values...

Tang, Hui; McGuire, Luke A.; Rengers, Francis K.; Kean, Jason W.; Staley, Dennis M.; Smith, Joel B.

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Year Published: 2019

Improved implementation of rupture location uncertainty in fault displacement hazard assessment

This short note proposes an improvement to the implementation of uncertainty associated with rupture location from future earthquakes in probabilistic fault displacement hazard analysis. Location uncertainty leads to nonzero primary fault displacement near a mapped fault. With the improved implementation of location uncertainty, estimated fault...

Chen, Rui; Petersen, Mark D.

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Year Published: 2019

Intensity and impact of the New York Railroad superstorm of May 1921

Analysis is made of low‐latitude ground‐based magnetometer data recording the magnetic superstorm of May 1921. By inference, the storm was driven by a series of interplanetary coronal mass ejections, one of which produced a maximum pressure on the magnetopause of ~64.5 nPa, sufficient to compress the subsolar magnetopause radius to ~5.3 Earth...

Love, Jeffrey J.; Hayakawa, Hisashi; Cliver, Edward W.

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Year Published: 2019

Geographic context affects the landscape change and fragmentation caused by wind energy facilities

Wind energy generation causes transformation of landscapes as new roads, pads, and transmission lines are constructed. Limiting the landscape change and fragmentation caused by these facilities likely minimizes impacts to biodiversity and sensitive wildlife species. We examined the effects of wind energy facilities’ geographic context on changes...

Diffendorfer, James E.; Dorning, Monica; Jolene Keen; Kramer, Louisa; Taylor, Robert

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Year Published: 2019

Assessment of continuous oil resources in the Eastern Great Basin Province of Nevada, Utah, and Idaho, 2018

The U.S. Geological Survey (USGS) quantitatively assessed the potential for undiscovered, technically recoverable continuous oil and gas resources in the Eastern Great Basin Province (Anna and others, 2007) of Nevada, Utah, and Idaho (fig. 1). The assessment focused on the area of the province between the Roberts Mountains and...

Schenk, Christopher J.; Mercier, Tracey J.; Woodall, Cheryl A.; Finn, Thomas M.; Gaswirth, Stephanie B.; Marra, Kristen R.; Le, Phuong A.; Brownfield, Michael E.; Leathers-Miller, Heidi M.; Drake, Ronald M.; Kinney, Scott A.
Schenk, C.J., Mercier, T.J., Woodall, C.A., Finn, T.M., Gaswirth, S.B., Marra, K.R., Le, P.A., Brownfield, M.E., Leathers-Miller, H.M., Drake, R.M., II, and Kinney, S.A., 2019, Assessment of continuous oil resources in the Eastern Great Basin Province of Nevada, Utah, and Idaho, 2018: U.S. Geological Survey Fact Sheet 2019–3002, 2 p., https://doi.org/10.3133/fs20193002.

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Year Published: 2019

Crustal architecture beneath the southern Midcontinent (USA) and controls on Mesoproterozoic iron-oxide mineralization from 3D geophysical models

Several types of critical mineral-bearing ore deposits in the southern Midcontinent region of the U.S. are hosted in Mesoproterozoic igneous rocks largely concealed beneath Paleozoic cover. Discerning the architecture of igneous intrusions and volcanic centers in the crust is fundamental to understanding the geologic evolution of this vast region...

McCafferty, Anne E.; Phillips, Jeffrey D.; Hofstra, Albert H.; Day, Warren
McCafferty, A.E., Phillips, J.D., Hofstra, A.H., and Day, W.C., 2019, Crustal architecture beneath the southern Midcontinent (USA) and controls on Mesoproterozoic iron-oxide mineralization from 3D geophysical models: Ore Geology Reviews, v. 111, 21 p.

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Year Published: 2019

Thermotectonic history of the Kluane Ranges and evolution of the eastern Denali Fault Zone in southwestern Yukon, Canada

Exhumation and landscape evolution along strike‐slip fault systems reflect tectonic processes that accommodate and partition deformation in orogenic settings. We present 17 new apatite (U‐Th)/He (He), zircon He, apatite fission‐track (FT), and zircon FT dates from the eastern Denali fault zone (EDFZ) that bounds the Kluane Ranges in Yukon, Canada...

McDermott, Robert G.; Ault, Alexis K.; Caine, Jonathan S.; Thomson, Stuart N.

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: 520
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.