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: 409
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Year Published: 1997

Nitrogen and phosphorus data for surface water in the Upper Colorado River basin, Colorado, 1980-94

This report documents, summarizes, and provides on 3.5-in. diskette the surface-water data collected from January 1980 through August 1994 for nitrogen and phosphorus in the Upper Colorado River Basin from the Colorado-Utah State line to the Continental Divide. Ancillary data for parameters, such as water temperature, streamflow, specific...

Wynn, K.H.; Spahr, N.E.
Nitrogen and phosphorus data for surface water in the Upper Colorado River basin, Colorado, 1980-94; 1997; OFR; 97-233; Wynn, K. H.; Spahr, N. E.

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Year Published: 1997

Evaluation of streamflow traveltime and streamflow gains and losses along the lower Purgatoire River, southeastern Colorado, 1984-92

Traveltime and gains and losses within a stream are important basic characteristics of streamflow. The lower Purgatoire River flows more than 160 river miles from Trinidad to the Arkansas River near Las Animas. A better knowledge of streamflow traveltime and streamflow gains and losses along the lower Purgatoire River would enable more informed...

Dash, R.G.; Edelmann, P.R.
Evaluation of streamflow traveltime and streamflow gains and losses along the lower Purgatoire River, southeastern Colorado, 1984-92; 1997; WRI; 96-4291; Dash, R. G.; Edelmann, P. R.

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Year Published: 1997

Source, transport, and partitioning of metals between water, colloids, and bed sediments of the Animas River, Colorado

No abstract available.

Church, S. E.; Kimball, B. A.; Fey, D. L.; Ferderer, D.A.; Yager, T.J.; Vaughn, R. B.
Source, transport, and partitioning of metals between water, colloids, and bed sediments of the Animas River, Colorado; 1997; OFR; 97-151; Church, S. E.; Kimball, B. A.; Fey, D. L.; Ferderer, D. A.; Yager, T. J.; Vaughn, R. B.

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Year Published: 1997

Strontium 87/strontium 86 as a tracer of mineral weathering reactions and calcium sources in an alpine/subalpine watershed, Loch Vale, Colorado

Sr isotopic ratios of atmospheric deposition, surface and subsurface water, and geologic materials were measured in an alpine/subalpine watershed to characterize weathering reactions and identify sources of dissolved Ca in stream water. Previous studies have noted an excess of Ca in stream water above that expected from stoichiometric weathering...

Clow, David W.; Mast, Alisa; Bullen, Thomas D.; Turk, John T.
Strontium 87/strontium 86 as a tracer of mineral weathering reactions and calcium sources in an alpine/subalpine watershed, Loch Vale, Colorado; 1997; Article; Journal; Water Resources Research; Clow, D. W.; Mast, M. A.; Bullen, T. D.; Turk, J. T.

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Year Published: 1996

Salinity in the Colorado River in the Grand Valley, western Colorado, 1994-95

Salinity, or the dissolved-solids concentration, is the measure of salts such as sodium chloride, calcium bicarbonate, and calcium sulfate that are dissolved in water. About one-half of the salinity in the Colorado River Basin is from natural sources (U.S. Department of the Interior, 1995), such as thermal springs in the Glenwood-Dotsero area,...

Butler, David L.; von Guerard, Paul B.
Salinity in the Colorado River in the Grand Valley, western Colorado, 1994-95; 1996; FS; 215-96; Butler, David L.; von Guerard, Paul B.

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Year Published: 1996

Summary of biological and contaminant investigations related to stream water quality and environmental setting in the Upper Colorado River basin, 1938-95

As part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) program, an inventory of the biological and contaminant investigations for the Upper Colorado River Basin study unit was conducted. To enhance the sampling design for the biological component of the program, previous studies about the ecology of aquatic organisms and...

Deacon, Jeffrey R.; Stephens, Verlin C.
Summary of biological and contaminant investigations related to stream water quality and environmental setting in the Upper Colorado River basin, 1938-95; 1996; WRI; 96-4172; Deacon, Jeffrey R.; Stephens, Verlin C.

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Year Published: 1996

What affects water quality in the Upper Colorado River basin?

Apodaca, Lori Estelle; Stephens, Verlin C.; Driver, Nancy E.
What affects water quality in the Upper Colorado River basin?; 1996; FS; 109-96; Apodaca, Lori Estelle; Stephens, Verlin C.; Driver, Nancy E.

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Year Published: 1996

Initial effects of Stagecoach Reservoir on discharge, water-quality characteristics, and suspended-sediment loads in the Yampa River, northwestern Colorado

The construction and filling of Stagecoach Reservoir on the Yampa River during 1988-91 were done to enhance water management and to use local water resources. To assess the initial effects of the reservoir on the hydrology of the upper Yampa River, physical, chemical, and biological data were collected at a site upstream (YR-1) during water years...

Tobin, R.L.
Initial effects of Stagecoach Reservoir on discharge, water-quality characteristics, and suspended-sediment loads in the Yampa River, northwestern Colorado; 1996; WRI; 95-4101; Tobin, R. L.

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Year Published: 1995

Characterization of selected radionuclides in sediment and surface water in Standley Lake, Great Western Reservoir, and Mower Reservoir, Jefferson County, Colorado, 1992

Lake sediment and surface water from Standley Lake, Great Western Reservoir, and Mower Reservoir, near Denver, Colorado, were sampled and analyzed for selected radionuclides during August through October, 1992. Sample concentrations were summarized and compared to results from a study conducted in 1983-84. Median plutonium-239,240 (239,240Pu)...

Clow, D.W.; Johncox, D.A.
Characterization of selected radionuclides in sediment and surface water in Standley Lake, Great Western Reservoir, and Mower Reservoir, Jefferson County, Colorado, 1992; 1995; WRI; 95-4126; Clow, D. W.; Johncox, D. A.

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Year Published: 1995

Bibliography, indices, and data sources of water-related studies, upper Colorado River basin, Colorado and Utah, 1872-1995

As part of the U.S. Geological Survey's National Water-Quality Assessment Program, current water-quality conditions in the Upper Colorado River Basin in Colorado and Utah are being assessed. This report is an initial effort to identify and compile information on water-related studies previously conducted in the basin and consists of a bibliography...

Bauch, N.J.; Apodaca, L.E.
Bibliography, indices, and data sources of water-related studies, upper Colorado River basin, Colorado and Utah, 1872-1995; 1995; OFR; 95-450; Bauch, N. J.; Apodaca, L. E.

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Year Published: 1995

Irrigation water use for the Fort Lyon Canal, southeastern Colorado, 1989-90

The U.S. Geological Survey, in cooperation with the Bent County Board of County Commissioners, began a study to evaluate irrigation water use quanti- tatively for about 91,630 acres of farmland irrigated from the 103.7-mile-long Fort Lyon Main Canal in the Arkansas River Valley of southeastern Colorado. This report provides information from 1980...

Dash, R.G.
Irrigation water use for the Fort Lyon Canal, southeastern Colorado, 1989-90; 1995; WRI; 94-4051; Dash, R. G.

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Year Published: 1995

Composition of precipitation, bulk deposition, and runoff at a granitic bedrock catchment in the Loch Vale watershed, Colorado, USA

The chemical composition of precipitation, bulk deposition, and runoff from a 30-m2 granitic bedrock catchment in the Loch Vale Watershed in Rocky Mountain National Park was monitored over a 6-week period in the summer of 1994 to determine the importance of dry deposition in the alpine zone. Concentrations of acid anions and base cations were 1.1...

Clow, David W.; Mast, Alisa
Composition of precipitation, bulk deposition, and runoff at a granitic bedrock catchment in the Loch Vale watershed, Colorado, USA; 1995; Article; Journal; Biogeochemistry of seasonally snow-covered catchments. Proc. symposium, Boulder, 1995; Clow, D. W.; Mast, M. A.