Swimming not recommended at Backbone Beach in Delaware County

(Des Moines, IA) -- Swimming is not recommended at three eastern Iowa beaches, ahead of the holiday weekend. The Department of Natural Resources says it's issuing swimming advisories at the beaches due to elevated E. coli levels. The beaches are Backbone Beach in Delaware County, Pleasant Creek Beach in Linn County and Lake Darling Beach in Washington County. The advisories don't close the beaches, but officials strongly discourage swimming due to health risks.