Indiana Department of Environmental Management officials are starting their statewide algae inspections, according to an article from Indiana Public Media.
During the next two weeks, state officials plan to measure algae concentrations in 13 state parks.
Indiana environmental officials collect water samples in each lake in the park. They test the samples for blue-green algae. If they find concentrations of algae greater than 100 million cells per liter, the lake will be closed to recreation for a minimum of two weeks.