(Des Moines, IA) -- The Iowa Department of Natural Resources has posted swimming advisories for nearly a dozen state beaches. Swimming is not recommended at the following beaches due to high levels of E-coli: Backbone Beach, Beads Lake Beach, Big Creek Beach, Black Hawk Beach, Emerson Day Beach, George Wyth Beach, Lake Darling Beach, Lower Pine Lake Beach and Prairie Rose Beach.
Swimming advisories due to Microcystin: Geode Beach and Green Valley Beach.
The beach at Lake of Three Fires State Park in southwest Iowa's Taylor County remains closed, after a Missouri swimmer contracted a potentially deadly illness from an amoeba in the water. The Centers for Disease Control and Prevention is conducting further testing of the water at that location.
Photo: Iowa Department of Natural Resources