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Page 5784, results 144576 - 144600

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Not all publications have extents, not all extents are completely accurate
The Energy Lands Program of the U.S. Geological Survey, fiscal year 1976
John O. Maberry (compiler)
1978, Circular 778
The Energy Lands Program of the U.S. Geological Survey comprises several projects that conduct basic and interpretive earth-science investigations into the environmental aspects of energy-resource recovery, transmission, and conversion. More than half the coal reserves of the United States occur west of the Mississippi River; therefore, the program concentrates mostly...
Inflatable straddle packers and associated equipment for hydraulic fracturing and hydrologic testing
Eugene Shuter, Robert R. Pemberton
1978, Water-Resources Investigations Report 78-55
Independent aquifer testing is the only way to fully understand the hydrology encountered in boreholes intersecting multiple aquifers. The most feasible method to accomplish the testing of multiple aquifer wells is through the use inflatable packers. The straddle packers and associated equipment herein described arE valuable tools for making isolated...
Interpretation of well logs in a carbonate aquifer
L.M. MacCary
1978, Water-Resources Investigations Report 78-88
This report describes the log analysis of the Randolph and Sabial core holes in the Edwards aquifer in Texas, with particular attention to the principles that can be applied generally to any carbonate system. The geologic and hydrologic data were obtained during the drilling of the two holes, from extensive...
Maps showing water-level declines, land subsidence, and earth fissures in south-central Arizona
R. L. Laney, R.H. Raymond, C.C. Winikka
1978, Water-Resources Investigations Report 78-83
From 1915 to 1975, more than 109 million acre-feet of ground water was withdrawn from about 4,500 square miles in Pinal and Maricopa Counties in south-central Arizona. The volume of water withdrawn greatly exceeds the volume of natural recharge, and water levels have been declining since 1923. As a result...
Water table in the surficial aquifer and potentiometric surface of the Floridan Aquifer in selected well fields, west-central Florida, September 1977
Paul D. Ryder, L. R. Mills
1978, Open-File Report 78-311
The water table in the surficial aquifer and the potentiometric surface of the Floridan aquifer in a 1,200 square-mile area in west-central Florida are mapped semiannually by the U.S. Geological Survey. Maps are prepared on the basis of water levels measured in wells each May to coincide with seasonal low...
Selected water-level records for Oklahoma, 1975-1977
Robert L. Goemaat, Dannie E. Spiser
1978, Open-File Report 78-721
A systematic program to collect water-level records in Oklahoma began in 1937. The objectives of this program are (1) to provide long-term records of water-level fluctuations in representative wells, (2) to facilitate the prediction of water-level trends and indicate future availability of ground-water supplies, and (3) to provide information for...
Evaluation of hydrogeologic aspects of proposed salinity control in Paradox Valley, Colorado
Leonard F. Konikow, M. S. Bedinger
1978, Open-File Report 78-27
The salt load in the Dolores River increases by about 200,000 tons per year where it crosses Paradox Valley, Colorado, because of the discharge of a sodium chloride brine from an underlying aquifer. A ground-water management program to nearly eliminate this major source of salt, which eventually enters the Colorado...
Potential hazards from future eruptions of Mount St. Helens Volcano, Washington
Dwight Raymond Crandell, Donal Ray Mullineaux
1978, Bulletin 1383-C
Mount St. Helens has been more active and more explosive during the last 4,500 years than any other volcano in the conterminous United States. Eruptions of that period repeatedly formed domes, large volumes of pumice, hot pyroclastic flows, and, during the last 2,500 years, lava flows. Some of this activity...
Susceptibility of coastal plain aquifers to contamination, Fairfax County, Virginia; a computer composite map
Richard H. Johnston, J. Nicholas Van Driel
1978, Open-File Report 78-265
A map is presented that classifies the Coastal Plain of Fairfax County, Virginia according to the susceptibility of the principal sand aquifers to contamination from surface sources. The following classification is used: (1) areas where leachate can readily enter the principal sand aquifers, (2) areas offering great natural protection against...
Discrimination of hydrothermally altered rocks along the Battle Mountain-Eureka, Nevada, mineral belt using Landsat images
M. Dennis Krohn, Michael J. Abrams, Lawrence C. Rowan
1978, Open-File Report 78-585
Landsat Multispectral Scanner (MSS) images of the northwestern part of the Battle Mountain-Eureki, Nevada mineral belt were evaluated for distinguishing hydrothermally altered rocks associated with porphyry copper and disseminated gold deposits. Detection of altered rocks from Landsat is based on the distinctive spectral reflectance of limonite present at coatings on...