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Page 4990, results 124726 - 124750

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Index of ground-water quality data for Florida
P. R. Seaber, O.O. Williams
1985, Open-File Report 85-177
The Master Water Data Index of the U.S. Geological Survey contains records and information for 13,925 ground-water quality collection sites in Florida as follows: 2,180 active and 11,559 inactive well sites, and 39 active and 147 inactive spring sites. Ground-water quality data have been and are being collected at more...
Reconnaissance geochemical exploration of the plutons of quartz monzonite and granite in the Jabal Lababa and Ar Rayth areas, southern Asir, Kingdom of Saudi Arabia
W.C. Overstreet, A.B. Assegaff, Mohammed Jambi, M.A. Hussain, G.I. Selner, J.J. Matzko
1985, Open-File Report 85-8
Geochemical reconnaissance for rare metals in plutons of albite-muscovite granite and quartz monzonite in the vicinity of Jabal Lababa disclosed positive geochemical anomalies for beryllium, tantalum, thorium, lanthanum, niobium, tin, yttrium, and zirconium. The low anomalous values for the rare metals in rocks and the short mechanical dispersion trains, seldom...
Effects of wastewater effluent on the South Platte River from Littleton to Denver
N.E. Spahr, S. R. Blakely
1985, Water-Resources Investigations Report 85-4124
The U.S. Geological Survey 's one-dimensional steady-state water quality model was used to investigate the effects of the effluent from the Bi-City WWTP (Wastewater Treatment Plant) on the South Platte River. The Bi-City WWTP is operated by the Cities of Littleton and Englewood. The model was calibrated from a 14.5...
Geohydrology of the High Plains Aquifer, western Kansas
L.E. Stullken, Kenneth R. Watts, R. J. Lindgren
1985, Water-Resources Investigations Report 85-4198
The High Plains aquifer underlies 174,050 sq mi of eight states (Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming) and contains approximately 3.3 billion acre-ft of water in storage. Saturated thicknesses within the aquifer are as great as 600 ft near the southern border of southwest Kansas....
Water resources activities in Louisiana district, fiscal year 1985
R.A. Herbert, E.A. Ellsworth
1985, Open-File Report 85-415
Water resources activities of the U.S. Geological Survey (USGS) in Louisiana consist of collecting water resources data and conducting interpretive hydrologic investigations and research. The water resources data and the results of the interpretive investigations are published or released by either the USGS or by cooperating agencies. The USGS water...
Effects of surface mining on streamflow, suspended-sediment, and water quality in the Stony Fork drainage basin, Fayette County, Pennsylvania
D.E. Stump, T.M. Mastrilli
1985, Water-Resources Investigations Report 84-4362
A study of the Stony Fork basin in southern Fayette County, Pennsylvania, from 1977 through 1980 determined the impacts of surface coal mining on surface-water quality. Stony Fork was sampled at six sites, during which time the area of surface mines increased from 0.5 to 5.5 percent of the study...
Controls on ground-water chemistry in the Horse Heaven Hills, south-central Washington
W.C. Steinkampf, Gilbert C. Bortleson, F. A. Packard
1985, Water-Resources Investigations Report 85-4048
Miocene basaltic aquifers are the source of domestic and municipal water, and about 20,000 acre-feet of irrigation water annually, in the Horse Heaven Hills in south-central Washington State. Groundwater chemical variations derive from the hydraulic characteristics is of the geohydrologic system, from groundwater basalt reactions, and from irrigation. Some dissolved...
Ground-water data from the San Miguel River basin, southwestern Colorado
D. J. Ackerman, T.D. Brooks
1985, Open-File Report 85-191
Hydrologic data were collected from 36 wells and 80 springs in the San Miguel River basin from 1977 to 1979. Depth to water was measured for 22 wells and discharges were measured for 53 springs. Chemical analyses for water samples collected from 23 wells and 25 springs indicated larger dissolved...
Water-quality data-collection activities in Colorado and Ohio; Phase I, Inventory and evaluation of 1984 programs and costs
Janet Hren, Thomas H. Chaney, J. Michael Norris, Carolyn J. Oblinger Childress
1985, Open-File Report 85-574
Pilot projects are being conducted in Colorado and Ohio to determine the extent to which existing water quality data, collected by different groups for various purposes and using different procedures, can be aggregated for use in addressing selected water quality questions of regional and national scope. The project has been...
Regression modeling of ground-water flow
R.L. Cooley, R.L. Naff
1985, Open-File Report 85-180
Nonlinear multiple regression methods are developed to model and analyze groundwater flow systems. Complete descriptions of regression methodology as applied to groundwater flow models allow scientists and engineers engaged in flow modeling to apply the methods to a wide range of problems. Organization of the text proceeds from an introduction...
Map showing upper Cenozoic rocks and deposits and Quaternary faults, Rio Grande rift, south-central Colorado
Steven M. Colman, James P. McCalpin, Dean A. Ostenaa, Robert M. Kirkham
1985, IMAP 1594
This map shows the faults and faulted rocks and deposits in the tectonically active part of the Rio Grande rift in Colorado, with particular emphasis on faults and deposits of Quaternary age. The Rio Grande rift in Colorado has been the subject of considerable recent geologic investigation. General compilations of...
Harmonic analyses of stream temperatures in the Upper Colorado River Basin
T.D. Steele
1985, Water-Resources Investigations Report 84-4290
Harmonic analyses were made for available daily water-temperature records for 36 measurement sites on major streams in the Upper Colorado River Basin and for 14 measurement sites on streams in the Piceance structural basin. Generally (88 percent of the station years analyzed), more than 80 percent of the annual variability...