Coming into contact with the blue-green algae may cause adverse health effects.
Indiana is planning on increasing their clear-cut logging in the state, but environmentalists say that the state is rushing the forest proposal.
The Indiana Department of Environmental Management says the species can be linked to some negative health effects.
State officials regularly monitor Indiana's recreational areas for high concentrations of blue-green algae.
The Indiana Department of Natural Resources posted a recreation alert notice on the webpage for Hardy Lake, in addition to signs at the physical site.
Warm weather and high nutrient levels are raising concerns about growing blue-green algae populations in Indiana's waterways.
The hot, stagnant weather is leading to an increase in potentially harmful blue-green algae at many Indiana reservoirs and lakes