Three-Dimensional Simulation of Flow and Sewage Effluent Migration in the Strait of Juan de Fuca, Washington

by Y. Onishi, Battelle, Pacific Northwest Lab, Richland, WA, USA,
Donald S. Trent, Battelle, Pacific Northwest Lab, Richland, WA, USA,
Annette S. Koontz, Battelle, Pacific Northwest Lab, Richland, WA, USA,



Document Type: Proceeding Paper

Part of: Environmental Engineering

Abstract: The purpose of this study was to evaluate effects of a proposed sewage effluent discharge located in the Strait of Juan de Fuca just outside of Sequim Bay, Washignton. The three-dimensional, time-dependent hydrothermal model, TEMPEST, was applied to the study area to predict a tidally varying flow and the migration of sewage effluent in the Strait of Juan de Fuca and Sequim Bay. The model was used to predict contaminant movement and concentration distribution including the amount of material entering Sequim Bay and the time required to reach equilibrium concentration within the Bay. The results were used to assess the potential biological impact of the proposed sewage effluent. A motion picture/videotape of the time-varying flow and contaminant movement was created using computer graphic techniques.

Subject Headings: Three-dimensional flow | Flow simulation | Three-dimensional models | Effluents | Sewage | Computer models | Tides | Bays | Washington | North America | United States

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