Thermal and chemical stratification is a common phenomenon in lakes and ponds during the summer months. Most lakes, 20 or more feet deep, have a warm epilimnion separated from the colder deep water stratum, the hypolimnion, by a thermocline or zone in which the water rapidly becomes colder with increased depth.
Proceedings of the Iowa Academy of Science
©1951 Iowa Academy of Science, Inc.
Sprugel, George Jr.
"An Extreme Case of Thermal Stratification and its Effect on Fish Distribution,"
Proceedings of the Iowa Academy of Science, 58(1), 563-566.
Available at: https://scholarworks.uni.edu/pias/vol58/iss1/71