Hydrodynamic and Water Quality Modeling of Lower Green Bay

by David J. Mark, U.S. Army Engineer Waterways, Experiment Station, Vicksburg, United States,
Barry W. Bunch, U.S. Army Engineer Waterways, Experiment Station, Vicksburg, United States,

Document Type: Proceeding Paper

Part of: Estuarine and Coastal Modeling


A confined disposal facility (CDF) for dredged material presently exists in lower Green Bay, Wisconsin. A planned expansion of the CDF is being studied to assess its impact on current patterns and subsequent redistribution of dissolved oxygen in the immediate vicinity of the proposed expansion. The redistribution is, in part, dependent on the magnitude and direction of currents generated by storm-induced seiches occurring in Lake Michigan and within the bay itself. Two-dimensional, vertically-averaged hydrodynamic and water quality models are being applied to make this assessment. Field data collected over three summers are used for calibrating and validating these models. Spatial and temporal variations in dissolved oxygen concentrations for existing and proposed configurations are used in making this evaluation. This paper addresses model development and calibration as well as analyses of physical and biological processes occurring in lower Green Bay.

Subject Headings: Water quality | Hydrologic models | Bays | Hydrodynamics | Two-dimensional models | Dissolved oxygen | Mathematical models | Water pollution | Wisconsin | United States | Lake Michigan | Great Lakes

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