Harmful Algal Bloom
Large blue-green algae (BGA) blooms create a number of public safety issues. All BGA can cause skin rashes and some produce specific toxins that can affect internal organs and nervous systems of both humans and animals. Response to this issue during the 2010-2011 timeframe includes, for instance, the state of Kansas developing a BGA policy that adopted the World Health Organization (WHO) “Guidelines for Safe Recreational Water Environments.” Those guidelines use cell counts of toxin producing BGA to recommend specific actions, from issuing Health Advisories and Warnings, to lake closures.
An example of a BGA bloom was in 2003 when Marion Lake in Kansas experienced a huge BGA bloom that at times almost completely covered the 6,000 acre lake with a pea green soup, see photo.
James L. Harris, SWT’s background document with SWT experience and perspective as of 2011 recreation season, including background from other Corps Districts.
CESWT-OD-NR, Memorandum for Record, 21 JULY 2011, Subject: Corps District Blue-Green Algae (BGA) Issues
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