The Flat Rock River is a river located in the state of Indiana, USA. It flows through several counties, including Decatur and Shelby, and is a tributary of the White River. The river is approximately 80 miles long and is known for its scenic beauty and recreational opportunities, such as fishing and kayaking. The river's watershed supports diverse ecosystems and wildlife, making it an important natural resource. The Flat Rock River also plays a role in local agriculture and provides water for nearby communities. Its banks are lined with trees and vegetation, offering a habitat for various species.