KNOXVILLE, Iowa — Swimming is not recommended at Lake Red Rock’s North Overlook Beach due to elevated levels of bacteria. The U.S. Army Corps of Engineers works with Iowa State University to test the water weekly. They say the “swimming not recommended” signs will stay up until testing shows lower bacteria counts. The Iowa Department of Natural Resources reports there are currently 13 state beaches that also have dangerously high bacteria count.

Swimming is not recommended at the following state beaches:

• Backbone Lake Beach
• Beeds Lake Beach
• Blue Lake Beach
• Denison Beach
• Emerson Bay Beach
• George Wyth Beach
• Lake Ahquabi Beach
• Lake Darling Beach
• Lake of Three Fires Beach (Bedford)
  
• Nine Eagles Beach
• Pleasant Creek Beach
• Rock Creek Beach
• Union Grove Beach