The purpose of this paper is to report on some physico-chemical measurements of Miller's Bay, Lake West Okoboji, made during summer, 1964, and to compare these measurements to some similar lakes. Lake West Okoboji, a large glacial lake, is located in northwest Iowa near the Minnesota border. Miller's Bay is small and is subjected to soil and domestic drainage. Measurements were made in April and at intervals from June to September. Samples were from 1 and 3 meter depths; depth at the sampling site was 8 meters. Water of the bay was hard and due primarily to magnesium, a situation similar to Lake Mendota. The comparatively high alkalinity was due entirely to bicarbonate. Free CO2 ranged from zero to 8 mg./L. and pH from 8.55-8.81. Nitrate, phosphate, and silicate were usually high and apparently related to domestic and soil drainage. Values were similar to other lakes receiving heavy allocthonous contributions. Nitrate was high, indicating sewage contamination. Transparency ranged from 1.1 to 2.9 meters. Turbidity and transparency were related to plankton blooms, not to rainfall. Bay water was nearly isothermal all summer.
Proceedings of the Iowa Academy of Science
© Copyright 1966 by the Iowa Academy of Science, Inc.
Cooke, G. Dennis
"Physico - Chemical Measurements of Miller's Bay, Lake West Okoboji, Summer, 1964,"
Proceedings of the Iowa Academy of Science, 73(1), 374-383.
Available at: https://scholarworks.uni.edu/pias/vol73/iss1/55