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Non-Point Pollution Loadings and their Impacts on Tennessee Valley Reservoirs

by Julia Burr Avera, Tennessee Technological Univ, Cookeville, United States,
John A. Gordon, Tennessee Technological Univ, Cookeville, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

This is a three-year study which began in March 1992. The project has focused on inflow streams entering storage projects including Douglas, Cherokee, South Holston, Watauga, Norris, Chatuge, Nottely and Blue Ridge reservoirs. All samples are tested for biochemical oxygen demand (5 and 50 day), nitrogen series, total and ortho phosphorus, and total and dissolved organic carbon. Temperature, DO, pH, ORP and conductivity are being taken as the sites are sampled. The data are then entered into a spreadsheet and divided into three portions of a hydrograph, rising, falling, and baseflow. Regressions are then performed between flow and water quality for each of the three hydrologic categories. These equations are then used to estimate yearly loadings entering each reservoir. This paper will present the rationale and methodology used during this study and an analysis of two years of data. Yearly oxygen-demanding materials loadings will be estimated from the regression equations. These loadings will then be related to water quality events seen within the eight reservoirs.

Subject Headings: Water quality | Nutrient pollution | Water pollution | Reservoirs | Oxygen demand | Load factors | Regression analysis | Tennessee | United States

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