WRRCTMR No.9 Progress in the Development of Deep Monitoring Stations in the Pearl Harbor Ground-Water Area, Oahu

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1967-02
Authors
Cox, Doak C.
Lao, Chester
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Water Resources Research Center, University of Hawaii at Manoa
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Abstract
Uncertainties as to the position and behavior of the salt-fresh transition zone at the base of the important, thick Herzberg lenses of Oahu render suspect all determinations of the safe yield of these lenses involving estimates of storage change. A few deep test wells have been drilled to investigate hydrologic conditions in the lower parts of the lenses, but none of these wells has penetrated the lens and entered the salt water beneath. This paper examines hydrologic data made available from two large diameter test wells that were drilled in 1965 in the Eva District for the Hawaii Institute of Geophysics for stratigraphic studies. Each of these wells passed through a considerable section of sediments of varying permeability and then entered the underlying Koolau basalt lava flows which constitute the main aquifer.
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Cox DC, Lao C. 1967. Progress in the development of deep monitoring stations in the Pearl Harbor ground-water area, Oahu. Honolulu (HI): Water Resources Research Center, University of Hawaii at Manoa. WRRC technical memorandum report, 9.
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67 pages
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