Document Type

Thesis - Open Access

Award Date


Degree Name

Master of Science (MS)

Department / School

Mechanical Engineering


The demand for water has increased continually in all parts of the world while the quantity available is essentially unchanged. Further, the projected increase in demand for different categories of use, particularly municipal consumption, manufacturing, mining and power generation will lead o a water shortage in the future. For example, by the year 2000 the effluent of municipal swage plants is expected in industrial wastes. The average annual streamflow that discharges into the ocean from the continental United States is essentially fixed and amounts to 1100 billion gallons of water per day. It is estimated that by the year 2000 withdrawals will total more than four fifths of this amount and the polluted return water will be about two thirds of the total streamflow. The awareness of the problem is highlighted by the establishment of the Office of Water Resources in the Department of Interior. From the research sponsored by this organization as well as others, there has been a substantial effort to improve management of water as a resource. Although the results of some research can be directly applied, the complex relations between the rivers and their basins necessitate a verification of the results on a hypothetical river basin before application to a real basin. An interdisciplinary team at the University of Missouri developed a computer model to relate the physical and economic aspects of the Blackwater River basin in central Missouri. One of the investigators of the Missouri team suggested that the Missouri model be modified for use on the Big Sioux River near Sioux Falls, South Dakota. The modification resulted in the development of the SDSU model.

Library of Congress Subject Headings

Rivers -- South Dakota

Water -- Pollution

South Dakota State University Theses



Number of Pages



South Dakota State University