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J.W.Marriott Library CONTENTdm Server Repository
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The lower Colorado River is an important water resource for metropolitan populations, agriculture, and industry in California, Arizona, and Nevada. The Bureau of Reclamation (BOR) manages the river, releasing water stored in Lakes Mead, Mohave,...
2024-05-01
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A multi-dimensional hydrodynamic model was applied to aid in the assessment of the potential hazard posed to the uranium mill tailings near Moab, Utah, by flooding in the Colorado River as it flows through Moab Valley. Discharge estimates for the...
2024-05-01
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Bed elevations were measured at 131 monumented cross sections in the Colorado River between Glen Canyon Dam and Lava Falls Rapid from June 1992 to September 1999 to provide data on channel sand storage. This report documents the location of the...
2024-05-01
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The Upper Colorado River Basin study unit of the U.S. Geological Survey National Water-Quality Assessment Program consists of the Colorado River watershed upstream from near the Colorado-Utah State line. The basin is about equally divided between...
2024-05-01
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The U.S. Geological Survey, in cooperation with the Grand County Board of County Commissioners, conducted a 4-year study to assess ground- and surface-water-quality conditions and ground-water quantity in the 302-square-mile Fraser River watershed...
2024-05-01
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Water-quality samples were collected in the summer of 1997 from 45 sites (43 wells and 2 springs) in selected alluvial aquifers throughout the Southern Rocky Mountains physiographic province of the Upper Colorado River Basin study unit as part of...
2024-05-01
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The Upper Colorado River Basin (UCOL) of the National Water-Quality Assessment (NAWQA) Program includes the 17,800-square-mile drainage basin of the Colorado River upstream from the Colorado-Utah State line. The study area is almost equally...
2024-05-01
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Water-resources data for Colorado for water year 2003 consist of records of stage, discharge, and water quality of streams; stage, contents, and water-quality of lakes and reservoirs; meteorological data; and water levels and water quality of...
2024-05-01
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Water-resources data for Colorado for water year 2003 consist of records of stage, discharge, and water quality of streams; stage, contents, and water-quality of lakes and reservoirs; meteorological data; and water levels and water quality of...
2024-05-01
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Water-resources data for Colorado for the 2004 water year (WY) in this report consist of records of stage and discharge of streams; and stage and contents of one reservoir. This report contains discharge records for 312 gaging stations, stage and...
2024-05-01
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The Colorado River is the principal source of water in the valley of the Colorado River between Hoover Dam and the international boundary with Mexico. Agricultural, domestic, municipal, industrial, hydroelectric-power genera-tion, and recreation...
1992-05-01
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Algal community samples were collected at 15 sites in the Upper Colorado River Basin in Colorado as part of the National Water-Quality Assessment Program during water years 1996-97. Sites sampled were located in two physiographic provinces, the...
2024-05-01
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As part of the U.S. Geological Survey's National Water-Quality Assessment program, an analysis of the existing ground-water-quality data in the Upper Colorado River Basin study unit is necessary to provide information on the historic water-quality...
1998-05-01
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The NAWQA program is designed to integrate physical, chemical, and biological components to assess water quality in 60 river basins nationwide. The biological component of this program focuses on 1. Biological communities (algae,...
1997-05-01
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As part of Glen Canyon Environmental Studies, an experimental flood release from Glen Canyon Dam of discharges up to 45,000 cubic feet per second (cfs) is planned for spring 1996. To aid in preparation for this release and to help researchers and...
1996-05-01
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Biological community samples were collected at 15 sites in the Upper Colorado River Basin (UCOL) in Colorado as part of the National Water-Quality Assessment (NAWQA) Program. Sites sampled in two physiographic provinces, the Southern Rocky...
1999-05-01
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Climatic fluctuations have profound effects on water resources in the western United States. In the arid and semiarid Southwest, climatic fluctuations affect many hydrologic characteristics of water-sheds, including the quantity of base flow, the...
2024-05-01
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A gaging station has been operated by the U.S. Geological Survey at Lees Ferry, Arizona, since May 8, 1921. In March 1963, Glen Canyon Dam was closed 15.5 miles upstream, cutting off the upstream sediment supply and regulating the discharge of the...
2024-05-01
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Controlled flooding of the Colorado River by releases from Glen Canyon Dam has been proposed as a way to manage sediment and other resources in the Grand Canyon. Floods are a natural occurrence of rivers and, in the case of the Colorado River, the...
1996-05-01
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The productivity of the trout fishery in the tailwater reach of the Colorado River downstream from Glen Canyon Dam depends on the productivity of lower trophic levels. Photosynthesis and respiration are basic biological processes that control...
2024-05-01
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Table of Contents: Lower Colorado River; Why account for pumpage?; Which wells yield water that originated from the river?; Accounting surface; Selected references
1993-05-01
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As a part of the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program, hydrologic and water-quality assessment of the Upper Colorado River Basin (UCOL) study unit began in 1994. Prior to the design of the integrated studies of...
1998-05-01
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The sampling design of the National Water-Quality Assessment (NAWQA) program emphasizes a multidisciplinary approach using physical, chemical, and biological information to provide multiple lines of evidence to describe water-quality conditions....
1997-05-01
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Fish in the nation's rivers are exposed to many classes of environmental contaminants. Some of these contaminants accumulate in fish tissues and are passed on to consumers, such as other fish, wildlife, and humans. These compounds, and many...
2024-05-01
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The water-quantity and water-quality data for the Fraser River watershed through water year 1997 were compiled for ground-water and surface-water sites. In order to assess the water-quality data, the data were related to land use/land cover in the...
1999-05-01
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