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Page 4152, results 103776 - 103800

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Sediment transport and accretion and the hydrologic environment of Grove Creek near Kenansville, North Carolina
T. C. Stamey
1989, Water-Resources Investigations Report 89-4086
The Grove Creek basin includes an area of about 42 square miles in Duplin County, southeastern North Carolina. This report evaluates sediment transport and sediment-accretion rates in the lowermost 9-mile reach of Grove Creek by using hydrologic, dendrologic, and radioisotopic data collected at seven sites along the study reach. Hydrologic data...
Hydrology of the Castle Lake blockage, Mount St. Helens, Washington
William Meyer, M. A. Sabol
1989, Water-Resources Investigations Report 87-4272
The debris avalanche that occurred during the May 19, 1980, eruption of Mount St. Helens blocked South Fork Castle Creek and created Castle Lake. Stability of the blockage was of concern, and a digital model that simulates three-dimensional groundwater movement in the blockage was constructed as part of the analysis...
Geohydrology of the Escondido hydrologic subarea, San Diego County, California
L. R. Woolfenden
1989, Water-Resources Investigations Report 88-4223
The San Diego region of California is undergoing rapid growth with a corresponding increase in the demand for water. To update the basin plan developed in 1975 by the California Regional Water Quality Control Board, San Diego Region, water-level and water quality data for the 44-sq mi Escondido hydrologic subarea...
An inventory and evaluation of biological investigations that relate to stream-water quality in the upper Illinois River basin of Illinois, Indiana, and Wisconsin
D.W. Steffeck, Robert G. Striegl
1989, Water-Resources Investigations Report 89-4041
Results of studies of the aquatic biology of the upper Illinois River basin provide a historical data source from which inferences can be made about changes in the quality of water in the main stem river and its tributaries. The results of biological investigations that have been conducted throughout the...
Water-quality characteristics of the Columbia Plateau regional aquifer system in parts of Washington, Oregon, and Idaho
W.C. Steinkampf
1989, Water-Resources Investigations Report 87-4242
Water quality data for the period 1982 through 1983 from about 350 wells in three Miocene basalt units in the Columbia Plateau regional aquifer system, Washington, show that the quality of groundwater generally is suitable for most uses. The dominant water type is calcium magnesium bicarbonate at shallow depths, and...
Lithologic, geophysical, and well-construction data for observation wells in the Melton Valley area, Oak Ridge Reservation, Tennessee
Patrick Tucci, D. W. Hanchar
1989, Water-Resources Investigations Report 88-4197
Nineteen wells were installed at nine sites in the Melton Valley area. The wells are intended to provide information on water levels in both regolith and bedrock, aquifer characteristics, and subsurface lithology. Well depths range from 24 to 86 ft for shallow wells, and from 126 to 301 ft for...
Water quality and supply on Cortina Rancheria, Colusa County, California
E.B. Yates
1989, Water-Resources Investigations Report 89-4004
Cortina Rancheria covers an area of 1 sq mi in Colusa County, California, near the western edge of the Sacramento Valley. Local sources of water for residents of the rancheria are of poor quality or limited availability. Domestic needs are presently met by water from a hand-dug well and from...
Effect of urban runoff on the quality of lakes in Eagan, Minnesota
L. H. Tornes
1989, Water-Resources Investigations Report 86-4331
Sixteen lakes in the city of Eagan, Minnesota, were sampled during 1982-83 to detect water-quality changes that might have occurred because of urbanization since a previous study conducted during 1972-78. Each of the lakes was sampled five times to determine pH, specific conductance, dissolved oxygen, water temperature, transparency, and concentration...
Geohydrology and susceptibility of major aquifers to surface contamination in Alabama; area 3
V.E. Stricklin
1989, Water-Resources Investigations Report 88-4120
This report delineates and describes the geohydrology and the susceptibility to contamination of the major aquifers in Area 3--Cullman, Fayette, Lamar, Marion, Walker, and Winston Counties , Alabama. The major aquifers in the study area are the Tuscaloosa, Pottsville, and Bangor aquifers. The Pottsville aquifer is the most extensively used...
Characterization of the International Humic Substances Society standard and reference fulvic and humic acids by solution state carbon-13 (13C) and hydrogen-1 (1H) nuclear magnetic resonance spectrometry
Kevin A. Thorn, Daniel W. Folan, Patrick MacCarthy
1989, Water-Resources Investigations Report 89-4196
Standard and reference samples of the International Humic Substances Society have been characterized by solution state carbon-13 and hydrogen-1 nuclear magnetic resonance (NMR) spectrometry. Samples included the Suwannee River, soil, and peat standard fulvic and humic acids, the Leonardite standard humic acid, the Nordic aquatic reference fulvic and humic acids,...
Simulation analysis of the ground-water system in Mesozoic rocks in the Four Corners area, Utah, Colorado, Arizona, and New Mexico
B. E. Thomas
1989, Water-Resources Investigations Report 88-4086
The steady-state groundwater system in Mesozoic rocks in the Four Corners area, Utah, Colorado, Arizona, and New Mexico, was simulated with a finite-difference digital-computer model to improve the understanding of the system. The simulated area is 4 ,100 sq mi, and it includes three aquifers. The Entrada-Navajo aquifer includes the...
Precipitation, streamflow, and base flow in west-central Texas, December 1974 through March 1977
Eve L. Kuniansky
1989, Water-Resources Investigations Report 88-4218
Precipitation, streamflow, and base-flow data were analyzed for December 1974 through March 1977 as a part of the Edwards-Trinity Regional Aquifer-System Analysis in west-central Texas. The period of record analyzed corresponds to the calibrating period of a digital groundwater-flow model of the aquifer system currently (1988) being developed. Precipitation at...
Hydrogeology of the western part of the Salt River Valley area, Maricopa County, Arizona
James G. Brown, D. R. Pool
1989, Water-Resources Investigations Report 88-4202
The Salt River Valley is a major population and agricultural center of more than 3,000 mi2 in central Arizona (fig. 1). The western part of the Salt River Valley area (area of this report) covers about 1,500 mi2. The Phoenix metropolitan area with a population of more than 1.6 million...