The project is a multidisciplinary team approach to the biological, chemical, and sedimentary indications of the eutrophication process in the southern two-thirds of Lake Michigan. It also involved studies of weather- and air mass-modification by the lake and studies of the physical circulation of the lake as pertinent ancillary matters capable of influencing the expressions of eutrophication by lake parameters. Included also, as fundamental background, were studies of the bedrock framework of the lake basin and such additional facets of the geological history of the lake as were possible. (Author Modified Abstract)