Factors Affecting Dissolved Oxygen in Hydropower Reservoirsby Richard J. Ruane, Tennessee Valley Authority, Chattanooga, United States,
Gary E. Hauser, Tennessee Valley Authority, Chattanooga, United States,
Abstract: Dissolved oxygen (DO) is becoming a significant issue for hydropower projects. This paper identifies some key factors that can help hydropower operators better understand the nature of DO dynamics at their projects. Site-specific information which is readily available can be used to categorize projects and identify major tendencies with respect to anticipated DO levels in reservoir releases. Also, the effects on DO in reservoir releases of DO levels in the reservoir are discussed, as well as the effects of annual variations in watershed hydrology. In addition, the paper discusses the effects that contaminants in the watershed can have on DO in reservoir releases.
Subject Headings: Hydro power | Reservoirs | Dissolved oxygen | Watersheds | Power plants | Information management | Hydrology
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