Rock Island State Park is an 883-acre park located on the headwaters of Center Hill Lake at the confluence of the Caney Fork, Collins, and Rocky Rivers. The rugged beauty of the park includes the Caney Fork Gorge below Great Falls Dam. These overlooks are some of the most scenic and significant along the Eastern Highland Rim. Great Falls is a 30-foot horseshoe cascading waterfall, located below the 19th-century cotton textile mill that it powered over 100 years ago. Rock Island became a Tennessee State Park in 1969.