Thayer Lake   Be the first to submit input for Thayer Lake. If you have info on Thayer Lake, Union County, Iowa please submit it here to improve this web site.          These outdoors activities are available near Thayer Lake.   Lakes Near Thayer Lake: Sun Valley Lake, Ringgold County, 8 miles away   Public Lands Near Thayer Lake: Pammel State Park, Iowa, 14 miles away Green Valley State Park, Iowa, 23 miles away Nine Eagles State Park, Iowa, 30 miles away   Marinas On or Near Thayer Lake: Sun Valley Motor & Marina, Ellston, 10 miles away   Hotels Near Thayer Lake: Super 8 Winterset, Winterset, 17 miles away Americinn - Osceola, Ia, Osceola, 18 miles away Super 8 Osceola IA, Osceola, 19 miles away Days Inn Osceola, Osceola, 19 miles away Americas Best Value Inn/Osceola, Osceola, 19 miles away   Ski Areas Near Thayer Lake: Seven Oaks, Iowa, 53 miles away       275 foot drop, 4 lifts, 13 runs