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Page 3964, results 99076 - 99100

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Not all publications have extents, not all extents are completely accurate
Field guide for collecting and processing stream-water samples for the National Water-Quality Assessment Program
Larry R. Shelton
1994, Open-File Report 94-455
The U.S. Geological Survey's National Water-Quality Assessment program includes extensive data- collection efforts to assess the quality of the Nations's streams. These studies require analyses of stream samples for major ions, nutrients, sediments, and organic contaminants. For the information to be comparable among studies in different parts of the Nation,...
Analysis of meteorological data and water chemistry of Latir Lakes, Taos County, New Mexico, 1985-88
S. K. Anderholm, R. G. Roybal, D. W. Risser, Georgene Somers
1994, Water-Resources Investigations Report 93-4113
Data were analyzed to determine the chemistry of atmospheric deposition and water of the Latir Lakes in Taos County New Mexico, from 1985 to 1988. The Latir Lakes consist of a series of nine paternoster lakes that range in altitude from 11,061 to 11,893 feet above sea level. The pH...
Water resources of Lincoln and Union counties, South Dakota
C. A. Niehus
1994, Water-Resources Investigations Report 93-4195
Water resources of Lincoln and Union Counties occur as surface water in streams and lakes and ground water in ten major glacial and one major bedrock aquifers. The major surface-water sources are the Missouri and Big Sioux Rivers. Glacial aquifers contain about 4 million acre-feet of water in storage; 1.5...
Ground-water quality and geochemistry in Dayton, Stagecoach, and Churchill Valleys, western Nevada
James M. Thomas, Stephen J. Lawrence
1994, Open-File Report 93-356
The U.S. Geological Survey investigated the quality of ground water in the Dayton, Stagecoach, and Churchill Valleys as part of the Carson River Basin National Water-Quality Assessment (NAWQA) pilot study. Four aquifer systems have been de- lineated in the study area. Principal aquifers are unconsolidated deposits at altitudes of less...
Ground-water recharge near Santa Fe, north-central New Mexico
S. K. Anderholm
1994, Water-Resources Investigations Report 94-4078
Recharge to the basin-fill aquifer near Santa Fe, New Mexico, was investigated using chloride mass-balance methods. Chloride concentrations in water in the unsaturated zone indicate no recharge in areas where runoff and flooding do not occur. The mass of chloride stored in the upper part of the unsaturated zone in...
Hydrogeology of recharge areas and water quality of the principal aquifers along the Wasatch Front and adjacent areas, Utah
P.B. Anderson, D. D. Susong, S.R. Wold, V.M. Heilweil, R. L. Baskin
1994, Water-Resources Investigations Report 93-4221
The principal basin-fill aquifers in Cache Valley, the lower Bear River area, and along the Wasatch Front provide ground water to about 84 percent of the population of Utah. Recharge areas for the principal aquifers were mapped to provide information needed for the implementation of ground-water quality regulations and a...
Analysis of data on nutrients and organic compounds in ground water in the upper Snake River basin, Idaho and western Wyoming, 1980-91
Michael G. Rupert
1994, Water-Resources Investigations Report 94-4135
Nutrient and organic compound data from the U.S. Geological Survey and the U.S. Environmental Protection Agency STORET data bases provided information for development of a preliminary conceptual model of spatial and temporal ground-water quality in the upper Snake River Basin. Nitrite plus nitrate (as nitrogen; hereafter referred to as nitrate)...
Satellite image atlas of glaciers of the world
Water Resources Division, U.S. Geological Survey
1994, Fact Sheet 009-94
The world's glaciers react to and interact with changes in global and regional climates. Most mountain glaciers worldwide have been retreating since the latter part of the 19th century; global sea level has risen about 10 centimeters during the past century. Glaciers vary in size as a result of several...
Use of a precipitation-runoff model for simulating effects of forest management on streamflow in 11 small drainage basins, Oregon Coast Range
J. C. Risley
1994, Water-Resources Investigations Report 93-4181
The Precipitation-Runoff Modeling System (PRMS) model of the U.S. Geological Survey was used to simulate the hydrologic effects of timber management in 11 small, upland drainage basins of the Coast Range in Oregon. The coefficients of determination for observed and simulated daily flow during the calibration periods ranged from 0.92...
Quality of water and bottom sediments, and nutrient and dissolved-solids loads in the Apopka-Beauclair Canal, Lake County, Florida, 1986-90
D. M. Schiffer
1994, Water-Resources Investigations Report 93-4103
Nutrient-rich water enters Lake Beauclair and other lakes downstream from Lake Apopka in the Ocklawaha River chain of lakes in central Florida. Two sources of the nutrient-rich water are Lake Apopka outflow and drainage from farming operations adjacent to the Apopka-Beauclair Canal. Two flow and water- quality monitoring sites were...
Nutrients, suspended sediment, and pesticides in waters of the Red River of the North Basin, Minnesota, North Dakota, and South Dakota, 1970-90
L. H. Tornes, M. E. Brigham
1994, Water-Resources Investigations Report 93-4231
Available data on nutrients (phosphorus and nitrogen), suspended sediment, and pesticides in the Red River of the North Basin, a study unit under the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program, are reviewed. These data were collected by several agencies during 1970-90. Nutrient concentrations in surface water are higher...