Water Quality Research Program: Water Quality of Selected Tailwaters
1991
Nix, Joe | Hamlin-Tillman, Dorothy E. | Ashby, Steven L. | Dortcy, Mark S.
This report presents field and analytical techniques for studying the mechanisms and chemical transformations occurring in reservoir tailwaters. The research focuses on the poor water quality associated with deep, anoxic releases from hydropower and non-hydropower reservoirs. Water quality results from the tailwaters of the Little Missiouri River (Lake Greeson), Fouche La Fave River (Nimrod Lake), Rough River (Rough RiverLake), and Guadalupe River (Canyon Lake) are presented and discussed. The release of anoxic waters high in reduced substances into tailwaters can affect water resources, be hazardous to aquatic life, cause water treatment problems, and affect areas used for recreation. Eventually the water quality will recover to baseline conditions; however, the chemical and recovery mechanisms of the tailwater must be better understood to practice effective water quality management. Thus, the goals of the work discussed herein were to develop an improved understanding of chemical transformations and recovery mechanisms in selected Corps reservoir tailwaters and to provide guidance on sampling and analysis of tailwater quality.
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