Author: Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 354
Book Description
Geological Survey Circular
Geologic Processes at the Land Surface
Author: Howard Gordon WilshirePublisher:
ISBN:
Category : Geologic Processes
Languages : en
Pages : 52
Book Description
Geology and Mineral Wealth of the California Transverse Ranges
Author: New Publications of the U.S. Geological Survey
Author: New Publications of the Geological Survey
Author: Geological Survey (U.S.)Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 836
Book Description
Geological Survey Professional Paper
Author: U.S. Geological Survey Professional Paper
Author: Proceedings
Author: Ground Water in the Thousand Oaks Area, Ventura County, California
Author: James J. FrenchPublisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 48
Book Description
The ground-water basin beneath the city of Thousand Oaks, Calif., corresponds closely in area with the surface-water drainage basin of Conejo Valley. Before World War II there was little ground-water development. After World War II, urban development put a stress on the ground-water basin; many wells were drilled and water levels in wells were drawn down as much as 300 feet in places. Beginning in 1963, imported water replaced domestic and municipal ground-water systems, and water levels rapidly recovered to predevelopment levels or nearly so. Most of the ground water in the Thousand Oaks area is stored in fractured basalt of the middle Miocene Conejo Volcanics. Depending on the degree of occurrence of open fractures and cavities in the basalt, recoverable ground water in the upper 300 to 500 feet of aquifer is estimated to be between 400,000 and 600,000 acre-feet. The yield of water from wells in the area ranges from 17 to 1,080 gallons per minute. Most of the ground-water in the eastern part of the valley is high insulfate and has a dissolved-solids concentration greater than 1,000 milligrams per liter. In the western part of the valley the ground-water is mostly of a bicarbonate type, and the dissolved-solids concentration is less than 800 milligrams per liter. In most areas of Conejo Valley, ground-water is a viable resource for irrigation of public lands and recreation areas. (USGS)
Selected Geologic Literature on the California Continental Borderland and Adjacent Areas, to January 1, 1975
Author: Albert Eugene RobertsPublisher:
ISBN:
Category : Continental margins
Languages : en
Pages : 128
Book Description