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Technical Report

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Pend Oreille River -- Washington (State) -- Water quality -- Models, Water-supply -- Models, Pend Oreille River -- Washington (State) -- Water quality -- Computer simulation, Hydrologic models, Hydrodynamics -- Mathematical models


The purpose of this study was to improve the existing Version 3.0 application of CE-QUAL-W2 of the Pend Oreille River between Box Canyon Dam and Albeni Falls Dam by performing the tasks outlined above. In addition, the use of field data from 2004 as an additional calibration year would improve the confidence in the model’s predictive ability for temperature. The model simulations were run from January 1st to December 31st in each of the 3 years of model simulation: 1997, 1998 and 2004.

The model chosen for development is CE-QUAL-W2 Version 3.5 (Cole and Wells, 2006). This is a twodimensional unsteady hydrodynamic and water quality model that includes typical eutrophication parameters (algae, nutrients, temperature, organic matter, dissolved oxygen, pH). The PSU-WQRG is a center for development of this modeling tool (see


Technical Report EWR-04-06 produced by Water Quality Research Group, Department of Civil and Environmental Engineering, Maseeh College of Engineering and Computer Science, Portland State University for Washington Department of Ecology.

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