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: 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: October 20, 1996
Status: Completed

Upper Animas River Basin Abandoned Mine Lands Initiative

The USGS Abandoned Mine Lands Initiative (AMLI) is developing and demonstrating scientific knowledge and technologies that will help Federal land management agencies clean up contamination in areas near abandoned hardrock mines across the Nation. The Initiative is being conducted in two pilot watersheds, the Upper Animas River Basin in Colorado and the...

Filter Total Items: 409
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Year Published: 2010

Occurrence and distribution of dissolved solids, selenium, and uranium in groundwater and surface water in the Arkansas River Basin from the headwaters to Coolidge, Kansas, 1970-2009

In 2007, the U.S. Geological Survey (USGS), in cooperation with City of Aurora, Colorado Springs Utilities, Colorado Water Conservation Board, Lower Arkansas Valley Water Conservancy District, Pueblo Board of Water Works, Southeastern Colorado Water Activity Enterprise, Southeastern Colorado Water Conservancy District, and Upper Arkansas Water...

Miller, Lisa D.; Watts, Kenneth R.; Ortiz, Roderick F.
Occurrence and distribution of dissolved solids, selenium, and uranium in groundwater and surface water in the Arkansas River Basin from the headwaters to Coolidge, Kansas, 1970-2009; 2010; SIR; 2010-5069; Miller, Lisa D.; Watts, Kenneth R.; Ortiz, Roderick F.; Ivahnenko

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Year Published: 2010

Land-Use Analysis and Simulated Effects of Land-Use Change and Aggregate Mining on Groundwater Flow in the South Platte River Valley, Brighton to Fort Lupton, Colorado

Land use in the South Platte River valley between the cities of Brighton and Fort Lupton, Colo., is undergoing change as urban areas expand, and the extent of aggregate mining in the Brighton-Fort Lupton area is increasing as the demand for aggregate grows in response to urban development. To improve understanding of land-use change and the...

Arnold, L.R.; Mladinich, C.S.; Langer, W. H.; Daniels, J.S.
Land-Use Analysis and Simulated Effects of Land-Use Change and Aggregate Mining on Groundwater Flow in the South Platte River Valley, Brighton to Fort Lupton, Colorado; 2010; SIR; 2010-5019; Arnold, L.R.; Mladinich, C.S.; Langer, W.H.; Daniels, J.S.

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Year Published: 2010

Estimated Withdrawals and Use of Water in Colorado, 2005

The future health and economic welfare of the people and environment of Colorado depend on a continuous supply of fresh water. Detailed, comprehensive information on the use of water from Colorado's diverse surface-water and groundwater resources is important to water managers and planners by providing information they need to quantify current...

Ivahnenko, Tamara; Flynn, Jennifer L.
Estimated Withdrawals and Use of Water in Colorado, 2005; 2010; SIR; 2010-5002; Ivahnenko, Tamara; Flynn, Jennifer L.

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Year Published: 2010

Comparison of Mercury in Water, Bottom Sediment, and Zooplankton in Two Front Range Reservoirs in Colorado, 2008-09

The U.S. Geological Survey, in cooperation with the Colorado Department of Public Health and Environment, conducted a study to investigate environmental factors that may contribute to the bioaccumulation of mercury in two Front Range reservoirs. One of the reservoirs, Brush Hollow Reservoir, currently (2009) has a fish-consumption advisory for...

Mast, Alisa; Krabbenhoft, David P.
Comparison of Mercury in Water, Bottom Sediment, and Zooplankton in Two Front Range Reservoirs in Colorado, 2008-09; 2010; SIR; 2010-5037; Mast, M. Alisa; Krabbenhoft, David P.

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Year Published: 2009

Analysis of Dissolved Selenium Loading from Surface Water and Groundwater to Sweitzer Lake, Colorado, 2006-07

Elevated selenium concentrations in streams are a water-quality concern in western Colorado. Sweitzer Lake was placed on the State 303(d) list as impaired with respect to dissolved selenium. In Colorado, the Water Quality Control Division of the Colorado Department of Public Health and Environment is required to develop total maximum daily loads...

Thomas, Judith C.
Analysis of Dissolved Selenium Loading from Surface Water and Groundwater to Sweitzer Lake, Colorado, 2006-07; 2009; SIR; 2009-5048; Thomas, Judith C.

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Year Published: 2009

Revised Comparisons of Simulated Hydrodynamics and Water Quality for Projected Demands in 2046, Pueblo Reservoir, Southeastern Colorado

Pueblo Reservoir is one of southeastern Colorado's most valuable water resources. The reservoir provides irrigation, municipal, and industrial water to various entities throughout the region. The reservoir also provides flood control, recreational activities, sport fishing, and wildlife enhancement to the region. The Southern Delivery System (SDS...

Ortiz, Roderick F.; Miller, Lisa D.
Revised Comparisons of Simulated Hydrodynamics and Water Quality for Projected Demands in 2046, Pueblo Reservoir, Southeastern Colorado; 2009; SIR; 2009-5083; Ortiz, Roderick F.; Miller, Lisa D.

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Year Published: 2009

Analytical Results for Municipal Biosolids Samples from a Monitoring Program Near Deer Trail, Colorado (U.S.A.), 2008

Since late 1993, Metro Wastewater Reclamation District of Denver (Metro District), 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 (USGS...

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.), 2008; 2009; OFR; 2009-1090; Crock, J. G.; Smith, D. B.; Yager, T. J. B.; Berry, C. J.; Adams, M. G.

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Year Published: 2009

Estimated Colorado Golf Course Irrigation Water Use, 2005

Golf course irrigation water-use data were collected as part of the U.S. Geological Survey National Water Use Program's 2005 compilation to provide baseline information, as no golf course irrigation water-use data (separate from crop irrigation) have been reported in previous compilations. A Web-based survey, designed by the U.S. Geological Survey...

Ivahnenko, Tamara
Estimated Colorado Golf Course Irrigation Water Use, 2005; 2009; OFR; 2008-1267; Ivahnenko, Tamara

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Year Published: 2009

Absolute Measurement Session XIII IAGA Workshop Boulder Magnetic Observatory

The absolute measurement session of the XIII IAGA Workshop was held at the Boulder Magnetic Observatory June 10-13, 2008. Approximately 85 people attended this session. The main focus of the session was for observers to make and compare measurements using DIFlux magnetometers. The session also included absolute measurement training, with lectures...

Berarducci, A.; Woods, Andy

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Year Published: 2009

The use of fluoride as a natural tracer and the relationship to geologic features: Examples from the Animas River Watershed, San Juan Mountains, Colorado

Investigations within the Silverton caldera, in southwestern Colorado,used a combination of traditional geological mapping, alteration-assemblage mapping, and aqueous geochemical sampling that showed a relationship between geological and hydrologic features that may be used to better understand the provenance and evolution of the water. Veins...

Bove, Dana J.; Walton-Day, Katie; Kimball, Briant A.
D.J. Bove, K. Walton-Day, B.A. Kimball; The use of fluoride as a natural tracer in water and the relationship to geological features: examples from the Animas River Watershed, San Juan Mountains, Silverton, Colorado. Geochemistry: Exploration, Environment, Analysis ; 9 (2): 125–138.

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Year Published: 2009

A comparison of pre- and post-remediation water quality, Mineral Creek, Colorado

Pre- and post-remediation data sets are used herein to assess the effectiveness of remedial measures implemented in the headwaters of the Mineral Creek watershed, where contamination from hard rock mining has led to elevated metal concentrations and acidic pH. Collection of pre- and post-remediation data sets generally followed the synoptic mass...

Runkel, R.L.; Bencala, K.E.; Kimball, B. A.; Walton-Day, K.; Verplanck, P. L.
A comparison of pre- and post-remediation water quality, Mineral Creek, Colorado; 2009; Article; Journal; Hydrological Processes; Runkel, R. L.; Bencala, K. E.; Kimball, B. A.; Walton-Day, K.; Verplanck, P. L.

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Year Published: 2009

Application of iron and zinc isotopes to track the sources and mechanisms of metal loading in a mountain watershed

Here the hydrogeochemical constraints of a tracer dilution study are combined with Fe and Zn isotopic measurements to pinpoint metal loading sources and attenuation mechanisms in an alpine watershed impacted by acid mine drainage. In the tested mountain catchment, δ56Fe and δ66Zn isotopic signatures of filtered stream water samples...

Borrok, D.M.; Wanty, R. B.; Ian, Ridley W.; Lamothe, P.J.; Kimball, B. A.; Verplanck, P. L.; Runkel, R.L.
Application of iron and zinc isotopes to track the sources and mechanisms of metal loading in a mountain watershed; 2009; Article; Journal; Applied Geochemistry; Borrok, D. M.; Wanty, R. B.; Ian, Ridley, W.; Lamothe, P. J.; Kimball, B. A.; Verplanck, P. L.; Runkel, R. L.

Filter Total Items: 216
USGS
May 28, 1998

BOSTON-Cleaning up where the mines left off is where some scientific minds are focused this week. Robert Runkel, a U.S. Geological Survey hydrologist based in Denver, Colo., will present Modeling the Effects of Proposed Remedial Actions on Stream Chemistry in Abandoned Mine Lands...

USGS
April 25, 1998

Blue skies and gentle breezes prevailed for the 5k race and 2k fun run that kicked off Open House at the U.S. Geological Survey, Sat., April 25, 1998.

USGS
April 20, 1998

Water quality in the South Platte River Basin has been adversely affected by agriculture and urban development, according to the results of a 5-year investigation of water quality by the U.S. Geological Survey.

USGS
April 16, 1998

A 5-year study of water quality in the Rio Grande Valley, from its headwaters in Colorado to near El Paso, Texas, has been completed by the U.S. Geological Survey (USGS). The study focused on ground water in the flood plain of the Rio Grande and surface water in the Rio Grande and selected tributaries.

USGS
April 16, 1998

Although agriculture and urban activities have substantially affected water quality in several areas of the South Platte River Basin, concentrations of pesticides and volatile organic chemicals (VOCs), such as MTBE, are generally below levels of concern for human health, according to the results of a 5-year investigation of water quality by the U.S. Geological Survey.

USGS
April 14, 1998

An air temperature threshold is a powerful indicator for anticipatingpotentially hazardous landslides during the spring snowmelt season,according to the results of a recent study by the U.S. Geological Survey.

USGS
March 17, 1998

The potential for earthquakes in many parts of the United States, a review of the more than 10,000 earthquakes that have occurred near Mammoth Lakes, Calif., during the past year, and updates on the monitoring of earthquakes, mine explosions and earthquake-induced landslides are part of 32 presentations by scientists from the U.S. Geological Survey at the annual meeting of the Seismological...

USGS
February 13, 1998

From Seafloor Mapping to Hammer Awards and AAAS Fellowships........

USGS
September 26, 1997

High concentrations of dissolved salts in the lower Colorado River basin have been linked to regional geologic collapse near Glenwood Springs, Colo., according to scientists from the U.S. Geological Survey and the Colorado Geological Survey.

USGS
June 9, 1997

The 1996/97 austral summer season marked the beginning of the newest deep ice core drilling project sponsored by the National Science Foundation, Office of Polar Programs.

USGS
June 2, 1997

The U. S. Geological Survey has released Open-File Report 97-59 entitled: Geology and Structure of the Pine River, Florida River, Carbon Junction, and Basin Creek Gas Seeps, La Plata County, Colorado.

USGS
November 21, 1996

The gasoline additive MTBE (methyl tert-butyl ether) was detected in some urban stormwater samples collected in 16 cities and metropolitan areas by the U.S. Geological Survey, but all detections of MTBE were less than the lower limit of the U.S. Environmental Protection Agency’s draft lifetime health advisory for drinking water.

Filter Total Items: 213