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Page 4218, results 105426 - 105450

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Water quality of the Lexington Reservoir, Santa Clara County, California, 1978-80
R.T. Iwatsubo, M. A. Sylvester, I.S. Gloege
1988, Water-Resources Investigations Report 87-4253
Analysis of water samples from Lexington Reservoir and Los Gatos Creek upstream from the reservoir from June 1978 through September 1980 showed that water generally met water-quality objectives identified by California Regional Water Quality Control Board, San Francisco Bay Region. Water-temperature profiles show that Lexington Reservoir is a warm monomictic...
A summary of the U.S. Geological Survey National Water-Quality Assessment program
R.M. Hirsch, W.M. Alley, W. G. Wilber
1988, Open-File Report 88-95
Beginning in 1986, the Congress appropriated funds for the U.S. Geological Survey to test and refine concepts for a National Water Quality Assessment Program. At present, the program is in a pilot phase with field studies occurring in seven areas around the Nation. In 1990, a committee of the National...
A digital simulation of the glacial-aquifer system in Sanborn and parts of Beadle, Miner, Hanson, Davison, and Jerauld counties, South Dakota
P.J. Emmons
1988, Water-Resources Investigations Report 87-4082
The drought in South Dakota from 1974-76 and the near drought conditions in 1980-81 have resulted in increased demands on the groundwater resources within many of the irrigated areas of the James River basin in eastern South Dakota. These increases in demand for irrigation water from the glacial aquifer system,...
Geology of the Devils Hole area, Nevada
W. J. Carr
1988, Open-File Report 87-560
Detailed and reconnaissance mapping of the Devils Hole, Nevada, area has improved definition of the local geologic structure within a regional carbonate aquifer near its primary discharge points -- the springs of Ash Meadows. Several formerly unmapped calcite veins, and other young calcite-lined paleo-spring feeder zones were found, as well...
Operating manual for the R100 digital vibration-time totalizer
Edwin H. Cordes, Minghua Shi
1988, Open-File Report 88-454
A vibration sensor that monitors the running time of pumps to determine water withdrawal by various public-supply, agricultural, and industrial groups has been developed in response to a need demonstrated by data gathering activities of the U.S. Geological Survey 's National Water Use Information Program. This sensor, the R100 digital...
Ground-water quality in the Lompoc Plain, Santa Barbara County, California, 1983
Charles Berenbrock
1988, Water-Resources Investigations Report 87-4101
Groundwater is the main source of water in the Lompoc plain, California. The lower member of the younger alluvium is the main water-bearing zone. Long-term groundwater levels in most of the plain have not changed significantly since the 1940's. Groundwater quality in the plain in 1983 tended to deteriorate from...