Modeling Dissolved Oxygen in Lake Powell using CE-QUAL-W2 Modeling Dissolved Oxygen in Lake Powell using CE-QUAL-W2
Lake Powell is simulated using a hydrodynamic and water quality model, CE-QUAL-W2. Previously the model has been used at Lake Powell to simulate hydrodynamics, temperature, and total dissolved solids with a reasonable degree of accuracy. An additional parameter, dissolved oxygen, will be added to the simulations and then calibrated with observed data to verify accuracy.
Dissolved oxygen distributions in Lake Powell vary seasonally and change under different hydrologic cycles. They are a function of physical, biological, and chemical processes. Few measurements of these processes in Lake Powell exist. To compensate for the lack of data an empirical method of loading oxygen demand to the model is developed and tested. Observed limnological processes in the reservoir guide the development of the empirical methods. The methods are then tested in 16 year model simulations and compared with dissolved oxygen measurements from the 16 year period. By accurately reproducing the dissolved oxygen distributions the Lake Powell model will have improved accuracy and also broaden its usefulness.
School:Brigham Young University
School Location:USA - Utah
Source Type:Master's Thesis
Keywords:dissolved oxygen lake powell ce qual w2 reservoir water quality modeling hydrodynamic depletion metalimnion minimum hypolimnetic
Date of Publication:03/08/2007