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Page 4827, results 120651 - 120675

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Distribution and mobility of selenium and other trace elements in shallow ground water of the western San Joaquin Valley, California
S. J. Deverel, S.P. Millard
1986, Open-File Report 86-538
Samples of shallow ground water that underlies much of the irrigated area in the western San Joaquin Valley of California were analyzed for various major ions and trace elements, including selenium. Concentrations of the major ions generally were similar for ground water collected in the two primary geologic zones--the alluvial...
Methods for hydrologic monitoring of surface mining in the central-western United States
J.T. Turk, R. S. Parker, R.S. Williams Jr.
1986, Open-File Report 84-600
The regulations promulgated pursuant to the Surface Mining Control and Reclamation Act require the monitoring of potentially impacted hydrologic systems before, during, and after mining operations. This report details characteristics and processes that commonly determine the most acceptable approaches to hydrologic monitoring in the arid and semiarid central-western United States....
Trace-element contents of postorogenic granites of the eastern Arabian Shield, Kingdom of Saudi Arabia
J. S. Stuckless, R. B. Vaughn, George VanTrump Jr.
1986, Open-File Report 86-261
Trace-element contents for 46 postorogenic granitoids vary by as much as two orders of magnitude; most samples are strongly enriched in incompatible elements (such as the heavy rare earths, yttrium, niobium, and uranium) and depleted in the compatible elements (such as barium, strontium, scandium, europium, and cobalt). These trace-element characteristics...
Application of the aerial profiling of terrain system
E.J. Cyran
1986, Open-File Report 86-2
Test well Ch-Bf 146 was drilled to 1,650 ft below land surface to explore and evaluate the Patapsco Formation aquifers deeper than 1,000 ft in the Waldorf/La Plata area of Charles County, Maryland. The test hole penetrated two major aquifer systems above a depth of 1,000 ft and another major...
Potentiometric surface, ground-water withdrawals, and recharge area for the Lisbon aquifer in Alabama, fall 1982
John S. Williams, Michael Planert, Sydney S. DeJarnette
1986, Water-Resources Investigations Report 86-4120
The U.S. Geological Survey began a nationwide program in 1978, termed Regional Aquifer-System Analysis (RASA), to study a number of the major aquifer systems that provide a significant part of the country 's water supply. One of the aquifer systems chosen for study was the thick and extensive sequence of...
Ground-water data for the Hanna and Carbon basins, south-central Wyoming, through 1980
P. B. Daddow
1986, Open-File Report 85-628
Groundwater resources in the Hanna and Carbon Basins of Wyoming were assessed in a study from 1974 through 1980 because of the development of coal mining in the area. Data collected from 105 wells during that study, including well-completion records, lithologic logs, and water levels, are presented. The data are...
Hydrogeologic data for the Dakota aquifer system in Nebraska
M. J. Ellis
1986, Open-File Report 86-526
Data utilized in preparing an interpretive hydrogeologic report on the Dakota aquifer system in Nebraska are summarized. The study area is a 370,000 sq mi area that includes all of Kansas and Nebraska and parts of Arkansas, Colorado, Missouri, New Mexico, Oklahoma, and Texas. The broad objective for each Regional...
Kansas ground-water observation-well network, 1985
B.J. Dague, L.E. Stullken
1986, Open-File Report 86-231
Water level measurements are made in 1,892 selected wells in 73 counties, which currently (1985) comprise the Kansas groundwater observation-well network. These measurements are made on a continuous, monthly, quarterly, or annual basis. Water level measurements have been made in observation wells since 1937 as part of a cooperative program...