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Page 5518, results 137926 - 137950

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Oak Glen water-resources development study using modeling techniques, San Bernardino County, California
William R. Powers III, William F. Hardt
1974, Water-Resources Investigations Report 74-31
Hydrologic, digital-model, and economic analyses were made to determine the most efficient balance of conjunctive use of local ground water and surface water--specifically, whether additional ground-water supplies can be developed in the Oak Glen study area, San Bernardino County, Calif., for local use and also for export to the adjacent...
A special planning technique for stream-aquifer systems
C.T. Jenkins, O. James Taylor
1974, Open-File Report 74-242
The potential effects of water-management plans on stream-aquifer systems in several countries have been simulated using electric-analog or digital-computer models. Many of the electric-analog models require large amounts of hardware preparation for each problem to be solved and some become so bulky that they present serious space and access problems....
Water-quality and geohydrologic data at two sanitary landfill sites near Anchorage, Alaska
Chester Zenone, D.E. Donaldson
1974, Open-File Report 74-1131
Water-quality and geohydrologic data were collected at two sanitary landfill (solid-waste disposal) sites near Anchorage, Alaska. The study was undertaken by the U.S. Geological Survey in cooperation with the Greater Anchorage Area Borough and the U.S. Air Force. The purpose of the study was to evaluate the environmental effects of...
Time-dependent spectral analysis of thirty-one strong-motion earthquake records
Virgilio Perez
1974, Open-File Report 74-48
Velocity response spectral analysis as a function of time for 5 percent critical damping is presented for the horizontal components of thirty-one earthquake records (61 components). A nomograph that allows conversion of the velocity response envelope to a displacement response envelope and a pseudo-absolute acceleration response envelope spectrum is also...
Analog model study of the ground-water basin of the Upper Coachella Valley, California
Stephen J. Tyley
1974, Water Supply Paper 2027
An analog model of the ground-water basin of the upper Coachella Valley was constructed to determine the effects of imported water on ground-water levels. The model was considered verified when the ground-water levels generated by the model approximated the historical change in water levels of the ground-water basin caused by...