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Publications

Links to all publications authored by WY-MT Water Science Center Scientists:

Filter Total Items: 346

Using geochemical and statistical tools to identify irrigated areas that might contain high selenium concentrations in surface water Using geochemical and statistical tools to identify irrigated areas that might contain high selenium concentrations in surface water

Irrigated agriculture has a long history in the Western United States, beginning with Native American Indians. After passage of the Reclamation Act of 1902, the United States Government began building and subsidizing irrigation projects to foster settlement and development of the arid and semi-arid areas of the Western United States (National Research Council, 1989). Precipitation in the
Authors
David L. Naftz

Water-quality assessment of the South Platte River basin, Colorado, Nebraska, and Wyoming: Analysis of available nutrient, suspended-sediment, and pesticide data, water years 1980-92 Water-quality assessment of the South Platte River basin, Colorado, Nebraska, and Wyoming: Analysis of available nutrient, suspended-sediment, and pesticide data, water years 1980-92

Nutrient, suspended-sediment, and pesticide data from surface- and ground-water sites in the South Platte River Basin for water years 1980-92 were compiled, screened, and interpreted. This activity is part of the U.S. Geological Survey's National Water Quality Assessment (NAWQA) program. The analysis of existing water-quality data provides a perspective on recent water-quality conditions...
Authors
K.F. Dennehy, D. W. Litke, P.B. McMahon, J. S. Heiny, C. M. Tate

Using geochemical data to identify sources of salinity to the freshwater Navajo aquifer in southeastern Utah Using geochemical data to identify sources of salinity to the freshwater Navajo aquifer in southeastern Utah

Ground water is an important freshwater source for domestic and livestock uses in southeastern Utah because of the arid climate and unavailability of surface water from the San Juan River. The study area includes about 1,200 square miles in the southeastern corner of Utah (fig. 1). Precipitation on mountainous areas north, south, and east of the study area (fig. 2) seeps into the Navajo...
Authors
David L. Naftz, Lawrence E. Spangler, Zell E. Peterman

Hydrochemistry of aquifer systems and relation to regional flow patterns in Cretaceous and older rocks underlying Kansas, Nebraska, and parts of Arkansas, Colorado, Missouri, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming Hydrochemistry of aquifer systems and relation to regional flow patterns in Cretaceous and older rocks underlying Kansas, Nebraska, and parts of Arkansas, Colorado, Missouri, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming

Aquifer systems in Cretaceous and older rocks of the Central Midwest are divided on the basis of hydrochemistry and ground-water flow patterns in the Plains subregion, the Western Interior Plains aquifer system contains sodium chloride type water with large concentrations of dissolved solids. Ion ratios suggest that the water was derived from seawater by concentration and by depletion of...
Authors
Claud H. Baker, Robert B. Leonard

Water-level changes in the High Plains aquifer — Predevelopment to 1993 Water-level changes in the High Plains aquifer — Predevelopment to 1993

Water-level change in the High Plains aquifer underlying parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming results from differences in recharge from precipitation and ground-water withdrawals for irrigation. From the beginning of irrigation development (1940) to 1980, water levels declined in several areas, and exceeded 100 feet in parts of the...
Authors
J. T. Dugan, D. A. Cox

Water-level changes in the High Plains aquifer -- Predevelopment to 1992 Water-level changes in the High Plains aquifer -- Predevelopment to 1992

Changes in water levels in the High Plains aquifet underlying parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming result from the variability of precipitation, land use, and ground-water withdrawals. From the beginning of development of the High Plains aquifer to 1980, water levels declined throughout much of the area; the declines exceeded 100...
Authors
J. T. Dugan, T. J. McGrath, R. B. Zelt
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