IOWA — The Iowa Department of Natural Resources says swimming is not recommended at several state beaches over the 4th of July weekend.

On Friday, the Iowa Department of Natural Resources released a list of 12 state beaches that exceeded the state’s threshold for E. coli. These beaches include:

• Backbone Beach in Delaware County
• Beeds Lake Beach in Franklin County
• Blue Lake Beach in Monona County
• Denison Beach in Sac County
• Green Valley Beach in Union County
• Lake Darling Beach in Washington County
• Lake Manawa Beach Pottawattamie County
• McIntosh Woods Beach in Cerro Gordo County
• Nine Eagles Beach in Decatur County
• North Twin Lake West Beach in Calhoun County
• Pine Lake South Beach in Hardin County
• Prairie Rose Beach in Shelby County

A swimming not advised warning is now in place for these beaches until E.coli levels drop below the state’s threshold.

For a list of all the state’s beaches and their status visit the DNR’s website.