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BIBLIOGRAPHY, INDICES, AND DATA SOURCES OF WATER-RELATED STUDIES, UPPER COLORADO RIVER BASIN, COLORADO AND UTAH, 1872-1995 By Nancy J. Bauch and Lori E. Apodaca ABSTRACT As part of the U.s. Geological Survey's National Water-Quality Assessment Program, cur- rent 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, coauthor and subject indices, and sources of available water-related data. Computerized literature searches of scien- tific data bases were carried out to identify past water-related studies in the basin, and govern- ment agencies and private organizations were contacted regarding their knowledge or possession of water-related publications and data. Categories of information in the bibliography include: aquatic biology, climate, energy development, geology, land use, limnolog}', runoff, salinity, surface- and ground-water hydrology, water chemistry, water quality and quantity, and water use and management. The approximately 1,400 indexed references date from 1872 through February 1995 and include books, journal articles, maps, and reports. In many instances, an abstract has been provided for a given reference. Sources of water-related data in the basin are included in a table. INTRODUCTION In 1991, the U.S. Geological Survey (USGS) began full implementation of the National Water- Quality Assessment (NAWQA) Program. The major goals of the NAWQA Program are: to describe current water-quality conditions for a large part of the Nation's freshwater streams, rivers, and aquifers; to describe how water quality is changing over time; and to improve understanding of the primary natural and human factors that affect water-quality conditions. The water-quality information collected and analyzed by the NAWQA Program will be useful to Federal, State, and local water managers and policy makers in decision making to protect, use, and enhance water resources. A major feature of the NAWQA Program is the national investigation of water-quality conditions on different regional scales. The primary building blocks for the program are the ongoing and proposed studies of 60 hydrologic systems, referred to as study units, that include parts of the Nation's principal river basins and aquifer systems. These study units range in size from under 1,000 to more than 60,000 square miles and include a variety of hydrologic and geologic settings. More than two-thirds of the Nation's freshwater use and population served by public water-supply systems are represented by the study units. Twenty study-unit investigations began in 1991, an additional 20 started in 1994, and the remaining 20 are scheduled to begin in 1997. These investigations form the basis on which a national synthesis and assessment of comparable water-quality information will be conducted. The Upper Colorado River Basin in Colorado and Utah was one of the 20 study units that began in 1994. ABSTRACT 1