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Nearshore Hydrodynamic and Water Quality Modeling for Water Intake Evaluation and Design

by Kwang K. Lee,
Bing Shen,
Chung Shyan Wu,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

The nearshore water of the Great Lakes is of vital interest to millions of residents. Lake water is often the focal point in issues concerning economic development, recreation, and public health. These lakes receive river water, storm water, and other point and diffused discharges which often carry contaminants along the shoreline. The transport of contaminants has threatened water intakes in the region and has been linked to serious epidemic illness such as the outbreak of ciyptosporidiosis. These incidents heighten the interest in nearshore hydrodynamic and water quality modeling for water intake evaluation and design. A high resolution nearshore hydrodynaniic and contaminant transport model was developed to simulate various hydrodynamic and water quality conditions in the nearshore area to evaluate possible impacts on water intake. Through a sequence of simulations, an optimal location and design may be decided for a new intake and a performance evaluation may be made for an existing water intake. The finite element model incorporates nearshore physical, hydrographical, and hydroLogical features relevant to water intake frmnctions. The model has been through field verifications in the Great Lakes cases. Several real applications are presented. The method has aided engineers in water supply intake evaluation and raw water crib design.

Subject Headings: Water intakes | Water quality | Nearshore | Lakes | Hydrologic models | Hydrodynamics | Contaminant transport | Great Lakes

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