Document Type


Date of Award

Spring 5-31-1981

Degree Name

Doctor of Engineering Science in Civil Engineering


Civil and Environmental Engineering

First Advisor

Robert Dresnack

Second Advisor

Paul C. Chan

Third Advisor

Su Ling Cheng

Fourth Advisor

Roman I. Andrushkiw

Fifth Advisor

Thomas J. Olenik

Sixth Advisor

James R. Pfafflin


Mathematical models describing the temporal and spatial distribution of Dissolved Oxygen (DO) and Biochemical Oxygen Demand (BOD) for both pervious and impervious channel conditions in 3-dimensions have been constructed, and their analytical solutions were obtained. The solutions were implemented through the application of a digital computer, and their results are presented.

It has been found that there are significant differences in terms of DO and BOD distribution with respect to time and space in relatively deep and wide channels, thus necessitating the use of a 3-D, unsteady-state model.