Browse by Archive
J.W.Marriott Library CONTENTdm Server Repository
|
Abstract: Water-resources data for the 2004 water year for Texas are presented in six volumes, and consist of records of stage, discharge, and water quality of streams and canals; stage, contents, and water-quality of lakes and reservoirs; and...
2024-05-04
|
|
This report, prepared in cooperation with El Paso Water Utilities, presents the results of an investigation to determine the chemistry and age of ground water on the southwestern side of the Hueco Bolson. The radioactive isotope carbon-14...
2024-05-04
|
|
The Rio Grande aquifer system is the principal aquifer in a 70,000-square-mile area of southern Colorado, central New Mexico, and western Texas. The aquifer system consists of a network of hydraulically interconnected aquifers in basin-fill...
1995-05-04
|
|
This bibliography includes 1,913 references to the literature of the Rio Grande (Rio Bravo del Norte). The specific geographic area covered extends 100 km on either side of the river from Elephant Butte Dam in New Mexico to the Gulf of Mexico....
1997-05-04
|
|
This document identifies goals and outlines strategic directions; it is not a detailed implementation plan. Ideas in this document will be implemented over time with the insight and guidance of our employees, our colleagues, and our customers and...
1998-05-04
|
|
Stream temperature has long been recognized as an important water quality parameter. Temperature plays a key role in the health of a stream's aquatic life, both in the water column and in the benthic habitat of streambed sediments. Many fish are...
2024-05-04
|
|
Current and historical nitrate-concentration and water-level data collected from wells completed in the unconfined aquifer in the intensively cultivated area north of the Rio Grande in south-central Colorado were used to determine the...
2024-05-04
|
|
The Middle Rio Grande Basin, the area within the Rio Grande Valley extending from Cochiti Dam downstream to San Acacia, is the focus of a 5-year study by the U.S. Geological Survey and other agencies to improve understanding of the area's water...
1999-05-04
|
|
The Rio Grande, flowing southward almost 2,000 miles from its headwaters in southern Colorado, drains an area of over 350,000 square miles and is the lifeblood of a semi-arid region supplying water for more than 3.5 million people and for...
2024-05-04
|
|
Increasing demand on the limited supplies of freshwater in the desert Southwest, as well as other parts of the United States, has increased the level of interest in saline-water resources. Saline ground water has long been recognized as a...
2024-05-04
|
|
Water-resources data for the 2004 water year for New Mexico consist of records of discharge and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality in wells and springs. This...
2024-05-04
|
|
A toxic contaminants study was performed in the lower Rio Grande Valley in February, 1994. The purpose was to screen selected sites for the occurrence and impact of toxic chemicals.
1995-05-04
|
|
The upper middle Rio Grande Basin, as defined by the U.S. Army Corps of Engineers, extends from the headwaters of the Rio Grande in southwestern Colorado to Fort Quitman, Texas. Most of the basin has a semiarid climate typical of the southwestern...
2024-05-04
|
|
Water-quality trends reflect the relation between water quality and human activities, chronicling changes in concentrations of environmental contaminants, introduction of new contaminants, and successful efforts in environmental pollution...
1997-05-04
|
|
Intensive mining activity and highly mineralized rock formations have had significant impacts on surface-water and streambed-sediment quality and aquatic life within the upper reaches of the Uncompahgre River in western Colorado. A synoptic study...
2024-05-04
|
|
For the past two decades, monitoring and research teams in the physical, biological, and cultural resource programs within the Glen Canyon Environmental Studies (GCES), and now the Grand Canyon Monitoring and Research Center (GCMRC), have been...
2024-05-04
|
|
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...
1996-05-04
|
|
Sediment supply and transport in Grand Canyon is an important management issue because of the presence and operation of Glen Canyon Dam on the Colorado River (U.S. Department of the Interior, 1995). Most of the fine-grained sediment that formerly...
2024-05-04
|
|
The water resources of the Upper Colorado River Basin have been extensively developed for water supply, irrigation, and power generation through water storage in upstream reservoirs during spring runoff and subsequent releases during the remainder...
2024-05-04
|
|
Opening the jet tubes at Glen Canyon Dam on March 26, 1996, released from Lake Powell a controlled flood of water that traveled down the Colorado River in Grand Canyon. How fast did the water move? How long did it take for water to reach a...
1997-05-04
|
|
High-resolution, subsurface imagery from ground-penetrating radar (GPR) has revealed the internal structure of sand bars at seven sites on the Colorado River, Grand Canyon. Based on reconnaissance-level surveys, we recognized three stratigraphic...
2024-05-04
|
|
The U.S. Geological Survey began full implementation of the National Water-Quality Assessment (NAWQA) program in 1991. The long-term goals of the NAWQA program are to (1) describe current water-quality conditions for a large part of the Nation's...
1996-05-04
|
|
Trace elements were analyzed in streambed-sediment samples collected from 16 sites and in fish-liver samples collected from 14 sites in the Upper Colorado River Basin in Colorado as part of the National Water-Quality Assessment program. Sites...
1998-05-04
|
|
In the Rocky Mountains of Colorado, major highways are often constructed in stream valleys. In the event of a vehicular accident involving hazardous materials, the close proximity of highways to the streams increases the risk of contamination...
2024-05-04
|
