Electromagnetic Delineation of Saline Ground-Water Plumes in Alluvium and Bedrock Along the Canadian River Between Ute Reservoir and Rana Canyon, New Mexico

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Lake Meredith, which supplies water for domestic use to all major Texas cities on the Southern High Plains, exceeds the Texas Water Commission's standards for chloride and sulfate content (300 mg/L) as well as the U.S. Environmental Protection Agency's standard for sodium (250 mg/L). Location of the sources of these solutes is a necessary first step in any remediation effort to reduce the salinity of river waters and ultimately the salinity of Lake Meredith. Initial examination of the conductivity and salinity of Canadian River waters, which supply Lake Meredith, was completed in May 1992. The results of these analyses indicated that saline ground-water discharge areas were concentrated in the river segment between the Ute Reservoir and Rana Canyon, New Mexico, and that ground-water conductivity surveys should be focused along this part of the river. This assessment of the distribution of saline ground-water plumes in alluvium and bedrock along the Canadian River between the Ute Reservoir and Rana Canyon, New Mexico, is an integrated geological and geophysical study that incorporates both the use of extensive ground conductivity measurements and joint measurements. These data are used to identify sites of potential ground-water discharge to the river and to suggest preferred ground-water flow paths.


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