Iowa Lakes, Eutrophication, Water Quality, Limnology
Quantitative information on the morphology, watershed characteristics, water transparency, water chemistry and algal crops of six Iowa lakes is summarized. Lake West Okoboji had less oxygen present in the hypolimnion in 1950-1973 than in 1919-1928, indicating an increase in eutrophication. On the basis of increasing plant-nutrient concentrations, increasing summer algal standing crops and decreasing water transparency, the lakes can be ranked thus: Lake West Okoboji, Big Spirit Lake, Lake East Okoboji (including Upper Gar and Minnewashta) and Lower Gar Lake. These differences among lakes are related to the ratio of watershed area to lake volume, which controls the impact of annual nutrient inputs from the watersheds.
Proceedings of the Iowa Academy of Science
©1974 Iowa Academy of Science, Inc.
Jones, John R. and Bachmann, Roger W.
"Limnological Features of Some Northwestern Iowa Lakes,"
Proceedings of the Iowa Academy of Science, 81(4), 158-163.
Available at: https://scholarworks.uni.edu/pias/vol81/iss4/6