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Open-File Report 2013–1019

Initial Results from a Reconnaissance of Cyanobacteria and Associated Toxins in Illinois, August–October 2012

By Paul J. Terrio, Lenna M. Ostrodka, Keith A. Loftin, Gregg Good, and Teri Holland

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Ten lakes and two rivers in Illinois were sampled in August–October 2012 to determine the concentrations and spatial distribution of cyanobacteria and associated cyanotoxins throughout the State. The reconnaissance was a collaborative effort of the U.S. Geological Survey and the Illinois Environmental Protection Agency. Sample results indicated that concentrations of both total cyanobacterial cells and microcystin were commonly at levels likely to result in adverse human health effects, according to World Health Organization guidance values. Concentrations generally decreased from August to October following precipitation events and lower temperatures.

First posted January 31, 2013

For additional information contact:
Director, Illinois Water Science Center
U.S. Geological Survey
1201 W. University Avenue
Suite 100
Urbana, IL 61801
(217) 328–8747

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Suggested citation:

Terrio, P.J., Ostrodka, L.M., Loftin, K.A., Good, Gregg, and Holland, Teri, 2013, Initial results from a reconnaissance of cyanobacteria and associated toxins in Illinois, August–October 2012: U.S. Geological Survey Open–File Report 2013–1019, 4 p.





Results and Discussion



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