Document Type

Technical Report

Publication Date



The University of Arizona


The temporal and spatial changes in chemical and biological properties of Lake Mead have been investigated, thereby indicating the sources of water pollution and the time of highest pollution potential. Planktonic organisms have been shown to indicate the presence of water problems. Macro- and micro-nutrient analyses have shown that primary productivity is not inhibited by limiting concentrations. A mathematical model has been developed, tested with one set of independent data, and shown worthy of management utility. Although the model works very well for the Lake Mead area, the physical reality of the Multiple Linear Regression equation should be tested on independent data.


Benthic organisms; Chlorophyll; Dissolved oxygen; Effluent quality; Freshwater phytoplankton; Limnology; pH; Water analysis; Water temperature; Zooplankton


Applied Mathematics | Biochemistry | Environmental Health and Protection | Environmental Indicators and Impact Assessment | Environmental Microbiology and Microbial Ecology | Environmental Monitoring | Fresh Water Studies | Terrestrial and Aquatic Ecology




“This report constitutes the doctoral dissertation of the same title completed by the author in August 1972.” – Preface