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(Undated) -- Swimming advisories are posted at a dozen state park beaches, due elevated e-coli levels.
Those include:
Backbone Beach, Delaware County
Beads Lake Beach, Franklin County
Denison Beach, Sac County
Emerson Bay Beach, Dickinson County
George Wyth, Black Hawk County
Ahquabi State Park, Warren County
Lake of Three Fires Beach, Taylor County
Lewis and Clark Beach, Monona County
Nine Eagles Beach, Decatur County
Pleasant Creek Beach, Linn County
Union Grove Beach, Tama County
Swimming is not recommended at Lake Darling State Park, in Washington County, due to elevated e-coli levels and blue green algae.