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Page 4411, results 110251 - 110275

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Ground-water quality in Nevada -- A proposed monitoring program
Jon O. Nowlin
1986, Open-File Report 78-768
A program was designed for the systematic monitoring of ground-water quality in Nevada. Basic hydrologic and water-quality principles are discussed in the formulation of a rational approach to developing a statewide monitoring program. A review of ground-water monitoring efforts in Nevada through 1977 indicates that few requirements for an effective...
A reconnaissance water-quality appraisal of the Fountain Creek alluvial aquifer between Colorado Springs and Pueblo, Colorado, including trace elements and organic constituents
Doug Cain, Patrick Edelmann
1986, Water-Resources Investigations Report 86-4085
This report describes the hydrology and chemical quality of water in the stream-aquifer system along Fountain Creek and relates groundwater quality to land use, water use, and wastewater discharges. The alluvial aquifer, which is underlain by shale bedrock, is transmissive, extensively pumped, and primarily is recharged by Fountain Creek and...
Temperature of ground water at Philadelphia, Pennsylvania, 1979- 1981
Gary N. Paulachok
1986, Water-Resources Investigations Report 84-4189
Anthropogenic heat production has undoubtedly caused increased ground-water temperatures in many parts of Philadelphia, Pennsylvania, as shown by temperatures of 98 samples and logs of 40 wells measured during 1979-81. Most sample temperatures were higher than 12.6 degrees Celsius (the local mean annual air temperature), and many logs depict cooling...
Hydrogeology of and potential mining impacts on strippable lignite areas in the Denver Aquifer, east-central Colorado
N. E. Driver, R.S. Williams
1986, Water-Resources Investigations Report 84-4366
This study describes the hydrogeology of and potential impacts of mining on strippable lignite areas in the Denver aquifer in the east-central Colorado plains. Strippable lignitic coal seams , 20 to 60 ft thick, are present in the Denver Formation. The Denver aquifer, the saturated part of the Denver Formation,...
Retention time and flow patterns in Lake Moultrie, South Carolina
G. G. Patterson, R.M. Harvey
1986, Water-Resources Investigations Report 85-4121
A liquid dye tracer was injected into the inflow to Lake Moultrie, South Carolina, during high-flow conditions and again during low-flow conditions. Tracer concentrations were monitored at a network of fixed sampling stations in the lake to determine dispersion and transport characteristics in and through the lake. Wind-generated currents were...
Evaluation of the matrix exponential for use in ground-water-flow and solute-transport simulations; theoretical framework
A.M. Umari, S.M. Gorelick
1986, Water-Resources Investigations Report 86-4096
It is possible to obtain analytic solutions to the groundwater flow and solute transport equations if space variables are discretized but time is left continuous. From these solutions, hydraulic head and concentration fields for any future time can be obtained without ' marching ' through intermediate time steps. This analytical...
Approximate altitude of water levels in wells in the Chicot and Evangeline aquifers in the Houston area, Texas, spring 1986
James Frank Williams III, C.E. Ranzau Jr., L.S. Coplin
1986, Open-File Report 86-306
The purpose of this report, which was prepared in cooperation with the City of Houston and the Harris-Galveston Coastal Subsidence District, is to show the altitudes of water levels in wells in the Chicot and Evangeline aquifers in the Houston, Texas, metropolitan areas.  The maps are based on water-level measurements...
Floods in the Floyd River basin, Iowa
A.J. Heinitz
1986, Open-File Report 86-476
Flood elevation profiles and flood peak discharges for the floods of 1953, 1962, 1973, and 1983 in the Floyd River basin are given in this report. The profiles cover the Floyd and West Branch Floyd Rivers. The 1953 flood is the greatest known on the Floyd River since at least...
Water quality of streams and springs, Green River Basin, Wyoming
L. L. DeLong
1986, Water-Resources Investigations Report 82-4008
Data concerning salinity, phosphorus, and trace elements in streams and springs within the Green River Basin in Wyoming are summarized. Relative contributions of salinity are shown through estimates of annual loads and average concentrations at 11 water quality measurements sites for the 1970-77 water years. A hypothetical diversion of 20...
Geologic, hydrologic, and cultural factors in the selection of sites for the land disposal of wastes in Washington
N. P. Dion, R. C. Alvord, T.D. Olson
1986, Water-Resources Investigations Report 84-4279
As part of a program to deal with the problems of waste disposal in Washington, the Department of Ecology (WDOE), in cooperation with the U.S. Geological Survey, completed a study designed to provide the geologic, hydrologic, and cultural data needed to evaluate the suitability of State land areas for the...
Quality of ground water in the Columbia Basin, Washington, 1983
G. L. Turney
1986, Water-Resources Investigations Report 85-4320
Groundwater from 188 sites in the Columbia Basin of central Washington was sampled and analyzed in 1983 for pH, specific conductance, and concentrations of fecal coliform bacteria, major dissolved ions, and dissolved iron, manganese, and nitrate. Twenty of the samples were also analyzed for concentrations of dissolved trace metals including...
Verification of regression equations for estimating flood magnitudes for selected frequencies on small natural streams in Georgia
McGlone Price, Glen W. Hess
1986, Water-Resources Investigations Report 86-4337
In 1976 the U.S. Geological Survey, in cooperation with the Georgia Department of Transportation, began a program to monitor small natural streams in Georgia to verify the accuracy of the flood frequency estimating equations for the five flood frequency regions that were published in a previous study. Data collection consisted...