“…Three-dimensional temperature data were taken [6], [7], [8] a t four s i t e s of heated surface discharges on Lake Michigan during the 1971, 1972, and 1973 f i e l d years. Chosen were the Point Beach, Waukegan, and State Line s i t e s on the western or southwestern shore of the Lake; and the Palisades s i t e on the eastern shore.…”