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Page 4136, results 103376 - 103400

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The vertical distribution of selected trace metals and organic compounds in bottom materials of the proposed lower Columbia River export channel, Oregon, 1984
Gregory J. Fuhrer, Arthur J. Horowitz
1989, Water-Resources Investigations Report 88-4099
A proposal to deepen the lower Columbia River navigation channel in Oregon prompted a study of the vertical distribution of selected trace metals and organic compounds in bottom sediments. These data are needed to evaluate the effects of dredging and disposal operations. Elutriation testing of bottom material indicated chemical concentrations...
Potential for saltwater intrusion into the Upper Floridan aquifer, Hernando and Manatee Counties, Florida
G.L. Mahon
1989, Water-Resources Investigations Report 88-4171
Pumpage from the Upper Floridan aquifer has caused a lowering of the potentiometric surface and has increased potential for saltwater intrusion into the aquifer in coastal areas of west-central Florida. Groundwater withdrawals are likely to increase because of expected population growth, especially in coastal areas. To increase the understanding of...
Methodology, results, and significance of an unsaturated-zone tracer test at an artificial-recharge facility, Tucson, Arizona
D. D. Graham
1989, Water-Resources Investigations Report 89-4097
A tracer test conducted in 1987 at an artificial-recharge facility in Tucson, Arizona, indicates that solute movement through the poorly sorted stratified alluvial sediments in the unsaturated zone beneath a recharge basin takes place along preferential-flow paths. Movement of a tracer-laced pulse of reclaimed wastewater was monitored using pressure-vacuum lysimeters...
Preliminary hydrogeologic evaluation of the Cincinnati Arch region for underground high-level radioactive waste disposal, Indiana, Kentucky, and Ohio
O. B. Lloyd, R. W. Davis
1989, Water-Resources Investigations Report 88-4098
Preliminary interpretation of available hydrogeologic data suggests that some areas underlying eastern Indiana, north-central Kentucky, and western Ohio might be worthy of further study regarding the disposal of high-level radioactive waste in Precambrian crystalline rocks buried beneath Paleozoic sedimentary rocks in the area. The data indicate that (1) largest areas...
Analysis of the effect of pumping on ground-water flow in the Springfield Plateau and Ozark aquifers near Springfield, Missouri
J. L. Imes
1989, Water-Resources Investigations Report 89-4079
Pumpage of water from the Ozark aquifer for public supply and industry use by the city of Springfield and surrounding communities in southwestern Missouri has significantly altered the potentiometric surface of the aquifer. Springfield is located on a regional groundwater divide that trends east and west across southern Missouri. Groundwater...
Ground-water levels in the alluvial aquifer at Louisville, Kentucky, 1987-88
R.J. Faust, B.E. Lyons
1989, Water-Resources Investigations Report 89-4119
Water-level data have been collected in the alluvial aquifer at Louisville, Kentucky by the U.S. Geological Survey since 1943. Summaries and analysis of these data are published periodically to update the record and to help public officials who must manage this groundwater supply. Maps and hydrographs are presented in this...
Reconnaissance hydrogeologic investigation of the Defense Waste Processing Facility and vicinity, Savannah River Plant, South Carolina
K.F. Dennehy, D.C. Prowell, P.B. McMahon
1989, Water-Resources Investigations Report 88-4221
The hydrogeologic framework of the area around the Savannah River Plant, South Carolina consists of 2 to 3 separate water bearing units. In the northern half of the study area, the Barnwell and underlying McBean aquifers are considered one aquifer owing to the absence of the tan clay-confining unit between...
Ground-water-quality-monitoring program in Iowa: Nitrate and pesticides in shallow aquifers
M.G. Detroy, P.K. Hunt, M.A. Holub
1989, Water-Resources Investigations Report 88-4123
Concern exists about the occurrence of agricultural chemicals, primarily nitrate and pesticides, in shallow ground water. In response to this concern, the focus of the Iowa ground-water-quality-monitoring program has shifted to emphasize nonpoint contaminants. The program, which began in 1982, is operated by the U.S. Geological Survey in cooperation with...
Estimating pumping time and ground-water withdrawals using energy- consumption data
R. T. Hurr, D. W. Litke
1989, Water-Resources Investigations Report 89-4107
Evaluation of the hydrology of an aquifer requires knowledge about the volume of groundwater in storage and also about the volume of groundwater withdrawals. Totalizer flow meters may be installed at pumping plants to measure withdrawals; however, it generally is impractical to equip all pumping plants in an area with...
Preliminary assessment of sources, distribution, and mobility of selenium in the San Joaquin Valley, California
R. J. Gilliom
1989, Water-Resources Investigations Report 88-4186
Selenium in tile drain water from parts of the western San Joaquin Valley, California, has adversely affected fish and waterfowl where drain water was impounded. Soils in these drained areas were derived from Coast Range marine sedimentary formations, were naturally saline and probably contained abundant soluble selenium. Decades of irrigation...
Withdrawals and consumptive use of water in Pennsylvania, 1984
C. A. Loper, S. D. Lent, K. L. Wetzel
1989, Water-Resources Investigations Report 88-4095
Total accountable water withdrawals in Pennsylvania during 1984 were 14,033.66 Mga/d (million gallons per day); of that total, 5.2 percent (729.53 Mgal/d) was supplied from ground-water sources in 94.8 percent (13,302.12 Mgal/d) was supplied from surface-water sources. Thermoelectric power generation accounted for 71 percent of the total withdrawals (10,010.60 Mgal/d);...
Ground-water flow and quality near the Upper Great Lakes connecting channels, Michigan
J.L. Gillespie, D.H. Dumouchelle
1989, Water-Resources Investigations Report 88-4232
The Upper Great Lakes connecting channels are the St. Marys, St. Clair and Detroit Rivers, and Lake St. Clair. The effect of ground water on the connecting channels is largely unknown, and the controls on its movement and quality are undefined. Geologic, hydrologic, and environmental conditions near the channels have...
Water-level changes in the High Plains aquifer underlying parts of South Dakota, Wyoming, Nebraska, Colorado, Kansas, New Mexico, Oklahoma, and Texas: Predevelopment through nonirrigation season 1987-88
W. M. Kastner, D. E. Schild, D. S. Spahr
1989, Water-Resources Investigations Report 89-4073
The changes in water levels in the High Plains aquifer from the nonirrigation season 1986-87 through the nonirrigation season 1987-88 and from the nonirrigation season 1979-80 through the nonirrigation season 1987-88 are presented in maps for the entire High Plains aquifer area. Water level changes are caused by interacting changes...
The hydrothermal system in central Twin Falls County, Idaho
R.E. Lewis, H.W. Young
1989, Water-Resources Investigations Report 88-4152
Thermal water in Twin Fall County has been used for space heating, large-scale greenhouse operations, and aquaculture since the mid-1970's. More recently, increased utilization of the thermal water has caused aquifer pressures to decline. Near the city of Twin Falls, water levels in some formerly flowing thermal wells have declined...
Inorganic and organic ground-water chemistry in the Canal Creek area of Aberdeen Proving Ground, Maryland
M.M. Lorah, D.A. Vroblesky
1989, Water-Resources Investigations Report 89-4022
Groundwater chemical data were collected from November 1986 through April 1987 in the first phase of a 5-year study to assess the possibility of groundwater contamination in the Canal Creek area of Aberdeen Proving Ground, Maryland. Water samples were collected from 87 observation wells screened in Coastal Plain sediments; 59...
Analysis of water surface and flow distribution for the design flood at a proposed highway crossing of the Sabine River near Tatum, Texas
J. J. Gilbert, D.R. Myers
1989, Water-Resources Investigations Report 88-4231
The hydraulic effects of the proposed Texas Highway 43 crossing of the Sabine River near Tatum, Texas, were determined on the basis of results from a two-dimensional finite-element surface-water-flow model. In planning the replacement crossing by the Texas State Department of Highways and Public Transportation, approximations of apportionment of flow...