Public health officials are warning residents and visitors to North Coos County to stay away from the water in South Tenmile Lake. Water monitoring has confirmed the presence of toxic blue-green algae. It can produce toxins harmful to humans and animals. Experts say swallowing or inhaling water droplets should be avoided, as well as skin contact. Exposure to the toxins can produce severe health reactions. South Tenmile Lake is the second lake in Coos County to be found with the algae… and the sixth in the state. The Oregon Health Authority says monitoring of the lake will continue as long as it lasts.