An Evaluation of Dissolved Oxygen Modelling of the Athabasca River and the Wapiti-Smoky River System

📖 The Scoop

The Northern River Basins study was initiated in 1991 to understand and characterize the cumulative effects of development on the water and aquatic environment of the Peace, Slave, and Athabasca Rivers. This study was conducted to evaluate the capabilities of the existing model calibrations using winter dissolved oxygen data collected subsequent to the calibration. The study was intended to simulate winter dissolved oxygen conditions in the Athabasca River and Wapiti/Smoky Rivers for the winters of 1991 and 1992, using the previously calibrated models, and to compare the results with measured concentrations; compare model predictions of constituent travel time with the 1992 dye measurement; conduct a sensitivity analysis of effects of model input data and rate coefficients on predicted dissolved oxygen; develop a histogram of predicted dissolved oxygen concentrations at Smith and Grand Rapids based on the observed distributions of effluent flows and BOD concentrations at the existing mills and an assumed distribution for the Alberta Pacific mill under a range of river flow conditions; and re-evaluate the use of the models based on the results of this study.

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