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Harmful Algal Blooms

Harmful Algal Blooms

General Information

Report a Bloom or Associated Illness

Algal Bloom Testing Sites

Indiana Department of Environmental Management conducts weekly sampling at various sites during the algal bloom season from May to August.  Results are categorized as:
Low , Advisory , Caution , and Beach Closed

**Map is currently reflective of our last sampling season date of August 28, 2017.  Stay tuned for the next sampling season to begin in May 2018. 
Hover over or click icons on map for more information.