Unified Interior Regions

Colorado

The Rocky Mountain Region ranges from the Colorado Rockies to the Western Deserts to the Great Plains. The Rocky Mountain Region conducts multi- and interdisciplinary research and monitoring in locations across the Region, the United States, around the world, and across our solar system.

States L2 Landing Page Tabs

Filter Total Items: 209
Date published: August 20, 2004
Status: Completed

Water, Energy, and Biogeochemical Budgets (WEBB): Loch Vale Watershed

Loch Vale is an alpine/subalpine watershed in Rocky Mountain National Park where the U.S. Geological Survey has been conducting research since the 1980s. Our research has focused on the effects of climate change and atmospheric pollutants on water, soil, vegetation, and aquatic life. The alpine/subalpine ecosystem in Loch Vale is sensitive to changes in climate and air pollution. Our long-term...

Date published: August 8, 2004
Status: Completed

South Platte Decision Support System (SPDSS) Well Installation and Aquifer Testing in Shallow Alluvial and Bedrock Aquifers, Adams County, Colorado

The South Platte Decision Support System (SPDSS) is a data base system being developed by the Colorado Water Conservation Board (CWCB) to provide water users, managers, and State of Colorado agencies access to important information related to water management issues affecting the South Platte River system.

Contacts: Suzanne Paschke
Date published: September 30, 2003
Status: Completed

Comparison of the power consumption coefficient (PCC) method to totalizing flow meter (TFM) for estimating ground-water pumpage in the Arkansas River Valley, Colorado

In the mid-1990s, the Colorado Division of Water Resources (CDWR) adopted rules governing measurement of tributary groundwater pumpage for the Arkansas River Basin. The rules allowed groundwater pumpage to be determined using one of two approaches—power conversion coefficient (PCC) or totalizing flowmeters (TFM). In addition, the rules allowed a PCC to be applied to the electrical power usage...

Date published: September 1, 2003
Status: Completed

Hydrogeology and water quality of the shallow unconsolidated-rock aquifers in the Upper Arkansas River Basin from Buena Vista to Salida, Colorado

Population growth near Buena Vista and Salida in Chaffee County has caused concern for the long-term availability and quality of groundwater . Groundwater withdrawals from deep wells that are completed in the basin-fill deposits and designed to supply multiple-dwelling developments could cause drawdowns in water levels of the overlying aquifers. Continued development of groundwater supplies in...

Date published: May 1, 2003
Status: Completed

Stochastic Modeling of Effects that the Sulphur Gulch Reservoir May Have on Colorado River Water Quality near Grand Junction, Colorado

Sulphur Gulch, a new reservoir proposed to be located about 25 miles east of Grand Junction, Colorado, on a tributary to the Colorado River that drains the Sulphur Gulch watershed between De Beque and Cameo, Colorado. The primary use of the Sulphur Gulch Reservoir would be to provide the Colorado River with up to 5,412.5 acre-feet of late-season water in support of the Endangered Fish Recovery...

Contacts: Kenneth J Leib
Date published: October 1, 2002
Status: Completed

Sources of Metal Loading to the Lake Fork from Turquoise Lake to the confluence with the Arkansas River

The Lake Fork emerges from the outlet of Turquoise Lake at the Sugarloaf dam and flows approximately 5 miles before joining the upper Arkansas River. The first reach of the Lake Fork downstream from the dam is affected by drainage from abandoned mines in the Sugarloaf mining district. Whereas remediation of some of the mine sites has been initiated, Federal Land holders are interested in...

Date published: September 30, 2002
Status: Completed

Arkansas River Water-Quality Data

The Arkansas River Basin drains an area of 24,904 square miles of southeastern Colorado. Like other basins on the Front Range, the Arkansas Basin has experienced growth and is expected to have significant increases in growth in the future. Demands on the limited water resources also will increase as changes in water storage, water releases, and/or transfer of waters within or outside of the...

Date published: September 1, 2002
Status: Completed

Water-Quality Assessment of Wolford Mountain Reservoir on Muddy Creek near Kremmling, Colorado

In March 1985 the U.S. Geological Survey (USGS), in cooperation with the Colorado River Water Conservation District (CRWCD), began a monitoring program on Muddy Creek in anticipation of the construction of a water storage project. A site upstream of the proposed reservoir (Muddy Creek above Antelope Creek, 09041090), and a downstream site (Muddy Creek at Kremmling, 09041500) were chosen to...

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: 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...

Filter Total Items: 409
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Year Published: 2011

Simulating the potential effects of climate change in two Colorado basins and at two Colorado ski areas

The mountainous areas of Colorado are used for tourism and recreation, and they provide water storage and supply for municipalities, industries, and agriculture. Recent studies suggest that water supply and tourist industries such as skiing are at risk from climate change. In this study, a distributed-parameter watershed model, the Precipitation-...

Battaglin, William; Hay, Lauren E.; Markstrom, Steve

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Year Published: 2010

Influence of hummocks and emergent vegetation on hydraulic performance in a surface flow wastewater treatment wetland

A series of tracer experiments were conducted biannually at the start and end of the vegetation growing season in a surface flow wastewater treatment wetland located near Phoenix, AZ. Tracer experiments were conducted prior to and following reconfiguration and replanting of a 1.2 ha treatment wetland from its original design of alternating shallow...

Keefe, Steffanie H.; Daniels, Joan S.; Runkel, Robert L.; Wass, Roland D.; Stiles, Eric A.; Barber, Larry B.
Influence of hummocks and emergent vegetation on hydraulic performance in a surface flow wastewater treatment wetland; 2010; Article; Journal; Water Resources Research; Keefe, Steffanie H.; Daniels, Joan S. (Thullen); Runkel, Robert L.; Wass, Roland D.; Stiles, Eric A.; Barber, Larry B.

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Year Published: 2010

Changes in the timing of snowmelt and streamflow in Colorado: A response to recent warming

Trends in the timing of snowmelt and associated runoff in Colorado were evaluated for the 1978-2007 water years using the regional Kendall test (RKT) on daily snow-water equivalent (SWE) data from snowpack telemetry (SNOTEL) sites and daily streamflow data from headwater streams. The RKT is a robust, nonparametric test that provides an increased...

Clow, David W.
Changes in the timing of snowmelt and streamflow in Colorado: a response to recent warming; 2010; Article; Journal; Journal of Climate; Clow, David W.

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Year Published: 2010

Streamflow gain-loss characteristics of Elkhead Creek downstream from Elkhead Reservoir near Craig, Colorado, 2009

The U.S. Geological Survey (USGS), in cooperation with the Colorado Water Conservation Board, the Upper Colorado River Endangered Fish Recovery Program (UCREFRP), Colorado Division of Water Resources, and City of Craig studied the gain-loss characteristics of Elkhead Creek downstream from Elkhead Reservoir to the confluence with the Yampa River...

Ruddy, Barbara C.
Streamflow gain-loss characteristics of Elkhead Creek downstream from Elkhead Reservoir near Craig, Colorado, 2009; 2010; SIR; 2010-5198; Ruddy, Barbara C.

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Year Published: 2010

Digital map of aquifer boundary for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming

This digital data set represents the extent of the High Plains aquifer in the central United States. The extent of the High Plains aquifer covers 174,000 square miles in eight states: Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. This data set represents a compilation of information from digital and paper...

Qi, Sharon
Digital map of aquifer boundary for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming; 2010; DS; 543; Qi, Sharon

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Year Published: 2010

Probability and volume of potential postwildfire debris flows in the 2010 Fourmile burn area, Boulder County, Colorado

This report presents a preliminary emergency assessment of the debris-flow hazards from drainage basins burned by the Fourmile Creek fire in Boulder County, Colorado, in 2010. Empirical models derived from statistical evaluation of data collected from recently burned basins throughout the intermountain western United States were used to estimate...

Ruddy, Barbara C.; Stevens, Michael R.; Verdin, Kristine
Probability and volume of potential postwildfire debris flows in the 2010 Fourmile burn area, Boulder County, Colorado; 2010; OFR; 2010-1244; Ruddy, Barbara C.; Stevens, Michael R.; Verdin, Kristine;

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Year Published: 2010

Geographic information system datasets of regolith-thickness data, regolith-thickness contours, raster-based regolith thickness, and aquifer-test and specific-capacity data for the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado

These datasets were compiled in support of U.S. Geological Survey Scientific-Investigations Report 2010-5082-Hydrogeology and Steady-State Numerical Simulation of Groundwater Flow in the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado. The datasets were developed by the U.S. Geological Survey in cooperation...

Arnold, L. Rick
Geographic information system datasets of regolith-thickness data, regolith-thickness contours, raster-based regolith thickness, and aquifer-test and specific-capacity data for the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado; 2010; DS; 507; Arnold, L. Rick

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Year Published: 2010

Macroinvertebrate and algal community sample collection methods and data collected at selected sites in the Eagle River watershed, Colorado, 2000-07

State and local agencies are concerned about the effects of increasing urban development and human population growth on water quality and the biological condition of regional streams in the Eagle River watershed. In response to these needs, the U.S. Geological Survey initiated a study in cooperation with the Colorado River Water Conservation...

Zuellig, Robert E.; Bruce, James F.
Macroinvertebrate and algal community sample collection methods and data collected at selected sites in the Eagle River watershed, Colorado, 2000-07; 2010; DS; 502; Zuellig, Robert E.; Bruce, James F.

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Year Published: 2010

Analytical results for municipal biosolids samples from a monitoring program near Deer Trail, Colorado (U.S.A.), 2009

Since late 1993, Metro Wastewater Reclamation District of Denver, a large wastewater treatment plant in Denver, Colo., has applied Grade I, Class B biosolids to about 52,000 acres of nonirrigated farmland and rangeland near Deer Trail, Colo., U.S.A. In cooperation with the Metro District in 1993, the U.S. Geological Survey began monitoring...

Crock, J. G.; Smith, D. B.; Yager, T. J. B.; Berry, C. J.; Adams, M. G.
Analytical results for municipal biosolids samples from a monitoring program near Deer Trail, Colorado (U.S.A.), 2009; 2010; OFR; 2010-1162; Crock, J. G.; Smith, D. B.; Yager T. J. B.; Berry, C. J.; Adams, M. G.

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Year Published: 2010

Hydrogeology and steady-state numerical simulation of groundwater flow in the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado

The Lost Creek Designated Ground Water Basin (Lost Creek basin) is an important alluvial aquifer for irrigation, public supply, and domestic water uses in northeastern Colorado. Beginning in 2005, the U.S. Geological Survey, in cooperation with the Lost Creek Ground Water Management District and the Colorado Water Conservation Board, collected...

Arnold, L. R.
Hydrogeology and steady-state numerical simulation of groundwater flow in the Lost Creek Designated Ground Water Basin, Weld, Adams, and Arapahoe Counties, Colorado; 2010; SIR; 2010-5082; Arnold, L. R.

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Year Published: 2010

Macroinvertebrate-based assessment of biological condition at selected sites in the Eagle River watershed, Colorado, 2000-07

The U.S. Geological Survey (USGS), in cooperation with the Colorado River Water Conservation District, Eagle County, Eagle River Water and Sanitation District, Upper Eagle Regional Water Authority, Colorado Department of Transportation, City of Aurora, Town of Eagle, Town of Gypsum, Town of Minturn, Town of Vail, Vail Resorts, Colorado Springs...

Zuellig, Robert E.; Bruce, James F.; Healy, Brian D.; Williams, Cory A.
Macroinvertebrate-based assessment of biological condition at selected sites in the Eagle River watershed, Colorado, 2000-07; 2010; SIR; 2010-5148; Zuellig, Robert E.; Bruce, James F.; Healy, Brian D.; Williams, Cory A.

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Year Published: 2010

Temporal change in biological community structure in the Fountain Creek basin, Colorado, 2001-2008

In 2001, the U.S. Geological Survey, in cooperation with Colorado Springs City Engineering, began a study to better understand the relations between environmental characteristics and biological communities in the Fountain Creek basin in order to aide water-resource management and guide future monitoring activities. To accomplish this task,...

Zuellig, Robert E.; Bruce, James F.; Stogner, Sr., Robert W.
Temporal change in biological community structure in the Fountain Creek basin, Colorado, 2001-2008; 2010; SIR; 2010-5103; Zuellig, Robert E.; Bruce, James F.; Stogner, Robert W.

Filter Total Items: 200

TNMCorps Mapping Challenge: Schools in CO NoHistory as of 08/05/21

A before-and-after image showing the change in edits between 7/29/21 and 8/05/21. Volunteers edited over 400 points during this timeframe (public domain). 

USGS
October 10, 2018

Internship: Yellowstone National Park Integrated Studies

Yellowstone National Park Integrated Studies

Summary: The subsurface structure and mineralogy of Yellowstone thermal areas is not well understood. The goal of the project supported by the internship is to evaluate mineral assemblages in drill hole core collected from Yellowstone National Park using spectral methods, determine subsurface structures using

Channel Surveys Muddy Creek below Wolford Mountain Reservoir near Kremmling, Colorado
October 19, 2018

Channel Surveys from Muddy Creek near Kremmling

This channel survey record from Muddy Creek near Kremmling contains a map of each monitored reach and channel survey graphs for each cross-section within each reach.

TNMCorps Mapping Challenge: Schools in CO NoHistory as of 08/19/21

A before-and-after image showing the change in edits between 8/05/21 and 8/19/21. Volunteers edited over 800 points during this timeframe (public domain). 

Colorado River flowing between snow-covered banks

Webcam for USGS site 09095500 Colorado River near Cameo, CO

Webcam at USGS Streamgage 09095500 Colorado River near Cameo, CO.

Visit Water Data For the Nation to get current data for this site.

Filter Total Items: 217
USGS science for a changing world logo
January 2, 2001

Nitrous oxide is an important atmospheric trace gas that contributes to the greenhouse effect and the destruction of ozone. Researchers hypothesize that one important source of atmospheric nitrous oxide is ground water, yet few studies have tested this hypothesis.

USGS
January 2, 2001

Nitrous oxide is an important atmospheric trace gas that contributes to the greenhouse effect and the destruction of ozone. Researchers hypothesize that one important source of atmospheric nitrous oxide is ground water, yet few studies have tested this hypothesis. 

USGS science for a changing world logo
December 7, 2000

Neither a tree-dweller nor a night bird, and roughly the size of a chicken, the Gunnison sage-grouse is not a particularly secretive bird yet just recently has it been identified as a new species of bird. 

USGS
December 7, 2000

Neither a tree-dweller nor a night bird, and roughly the size of a chicken, the Gunnison sage-grouse is not a particularly secretive bird yet just recently has it been identified as a new species of bird.

USGS
November 1, 2000

Native resident fish species, such as the Sacramento sucker and tule perch, are still commonly found in streams of the Sacramento River Basin in Northern California according to a recent U.S. Geological Survey (USGS) report. 

USGS
March 29, 2000

Recent deaths of endangered boreal toads in Rocky Mountain National Park have been linked to a chytrid fungus and are the second such diagnosis in Colorado, according to scientists with the U.S. Geological Survey.

USGS
October 27, 1999

Dr. Mary Lou Zoback, a geophysicist with the U.S. Geological Survey and chief of that agency’s earthquake hazards program in Menlo Park, Calif., became the new president of the Geological Society of America (GSA), Wednesday, October 27, during the organization’s annual meeting at the Colorado Convention Center in Denver, Colo.

USGS
September 10, 1999

Recent deaths of endangered boreal toads in one of the largest remaining populations in the southern Rocky Mountains have been linked to a chytrid fungus identified last year as being responsible for amphibian die-offs in Central America and Australia, according to pathologists at the USGS National Wildlife Health Center in Madison, Wis.

USGS
August 18, 1999

Have you ever wondered about those rocks in your yard? Have you been curious about the dinosaurs that used to roam Colorado? Are you curious about how maps are made, what grizzly bears eat or how water is tested? 

USGS
July 28, 1999

A new screening method, based on geology and climatology, has been shown to be a reliable means for predicting where lands in irrigated areas are susceptible to contamination from selenium, according to a report by the U.S. Geological Survey (USGS), in cooperation with the U.S. Fish and Wildlife Service, Bureau of Reclamation, and Bureau of Indian Affairs.

USGS
May 3, 1999

Retired U.S. Geological Survey geologist E. Bartlett "Bart" Ekren of Ft. Collins, Colo. was awarded the Dibblee Medal by the Dibblee Geological Foundation, on Friday, April 30 at the annual Pacific Section Meeting of the American Association of Petroleum Geologists for his innovative, high quality, and societally important contributions to understanding the geology of the Western United States.

USGS
April 6, 1999

Even the most complex household move would pale in comparison to the daunting task that faced the U.S. Geological Survey last week. Its National Water Quality Laboratory moved from Arvada, Colo. to the Denver Federal Center and a new facility which is leased by the USGS from the General Services Administration.

Filter Total Items: 213