Hydrologic interpretation of geophysical data from the southeastern Hueco Bolson, El Paso, and Hudspeth Counties, Texas

Gates, Joseph Spencer; Stanley, W. D.

Abstract:

Airborne-electromagnetic and earth-resistivity surveys were used to explore for fresh ground water in the Hueco Bolson southeast of El Paso, Texas. Aerial surveys were made along about 500 miles of flight line, and 67 resistivity soundings were made along 110 miles of profile. The surveys did not indicate the presence of any large bodies of fresh ground water, but several areas may be underlain by small to moderate amounts of fresh to slightly saline water. The material underlying the flood plain of the Rio Grande is predominantly clay or sand of low resistivity. Along a band on the mesa next to and parallel to the flood plain, more resistive material composed partly of deposits of an ancient river channel extends to depths of about 400 to 1,700 feet. Locally, the lower part of this more resistive material is saturated with fresh to slightly saline water. The largest body of fresh to slightly saline ground water detected is between Fabens and Tornillo, Texas, mostly in the sandhill area between the flood plain and the mesa. Under assumed conditions, the total amount of water in storage may be as much as 400,000 to 800,000 acre-feet. The resistivity data indicate that the deep artesian zone southwest of Fabens extends from a depth of about 1,200 feet to about 2,800 feet. (Woodard-USGS)

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USGS Numbered Series

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8979

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Gates, Joseph Spencer; Stanley, W. D.

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ENGLISH

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iii, 37 leaves :ill. (1 fold.), 5 fold maps ;27 cm.; (72 p., 6 sheets, scale 1:250,000 - PGS)

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U.S. Geological Survey,

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Open-File Report

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OFR

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76-650

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Hydrologic interpretation of geophysical data from the southeastern Hueco Bolson, El Paso, and Hudspeth Counties, Texas; 1976; OFR; 76-650; Gates, Joseph Spencer; Stanley, W. D.

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1976

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citation/reference

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Hydrologic interpretation of geophysical data from the southeastern Hueco Bolson, El Paso, and Hudspeth Counties, Texas; 1976; OFR; 76-650; Gates, Joseph Spencer; Stanley, W. D.