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Page 5548, results 138676 - 138700

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Mathematical model of San Juan Valley ground-water basin, San Benito County, California
Robert E. Faye
1974, Water-Resources Investigations Report 73-58
A mathematical model study of the San Juan Valley ground-water basin in San Benito County, Calif., has quantitatively described the ground-water hydrology of the basin under past, present, and future conditions of development. An analysis of conditions in the basin prior to large-scale ground-water development indicates that net recharge equaled...
Hydrologic analysis of the Mojave River, California, using a mathematical model
Timothy J. Durbin, W. F. Hardt
1974, Water-Resources Investigations Report 74-17
The channel of the Mojave Rive'r in California is normally dry and is highly permeable over much of its length, and large quantities of water from natural floodflows in the channel infiltrate through the channel bed to the underlying ground-water body. From 1930 to 1972 only 18 floods at The...
The 1971 drought in South Florida and its effect on the hydrologic system
Manuel A. Benson, Richard Alfred Gardner
1974, Water-Resources Investigations Report 74-12
The 1971 dry season rainfall in south Florida was low enough that the public media and concerned public officials unanimously characterized the event as a severe drought.Rainfall over all of south Florida during the 1970 wet season and the 1970-71 dry season was less than 85 percent of normal, as...
Estimated permeabilities for soils in the Sacramento Valley, California
Gilbert L. Bertoldi
1974, Water-Resources Investigations Report 73-51
Analysis of engineering and hydrologic data from 15 previous soil studies, analysis of particle-size distribution, and analysis of descriptions of soil profiles show that 50 percent of the Sacramento Valley area has soils having permeabilities characterized by infiltration rates of less than 2 feet per day (0.6 meter per day)....
Seismic hazards and land-use planning
Donald R. Nichols, Jane M. Buchanan-Banks
1974, Circular 690
Basic earth-science data are necessary for a realistic assessment of seismic hazards and as a basis for limiting corrective land-use controls only to those areas of greatest hazard. For example, the location, character, and amount of likely displacement and activity of surface faulting can be predicted if detailed geologic maps...