A popular Columbia lake is closed while state officials test the water quality.
Potentially dangerous levels of blue-green algae are growing in Stephens Lake.
Signs are posted warning residents to stay out of the water as a precaution. The algae has not been tested yet in the lake.
Humans could experience skin and eye irritation, the Department of Health and Senior Services said.
“It is one of the few algae that are toxic to both animals and humans- and more so to animals like dogs,” Columbia Parks and Recreation director Mike Griggs said.