The Flat River is a waterway located in the state of Michigan, USA. It flows through several towns and is known for its calm waters and scenic surroundings. The river is a popular spot for recreational activities such as fishing, kayaking, and canoeing, attracting both locals and visitors. The Flat River is part of the larger Grand River watershed, which ultimately drains into Lake Michigan. Its ecosystem supports various wildlife, including fish species like trout and bass. The river also plays a role in local history, with nearby communities having developed along its banks over the years.