The Chippewa River is a stream in Michigan, United States, that runs 91.8 miles (147.7 km)[3] through the central Lower Peninsula.

The Winchester Dam, built in 1954, impounds 1,420 acres (570 ha)[8] and forms the Martiny Lake Flooding.

The dam, which is owned by the State of Michigan, is identified as a "significant hazard due to its proximity to the Village of Barryton.

"[8] An 1879 atlas of Mecosta County gives an indication of the area's geography before the dam was built.

The river is a main water source for the city of Mount Pleasant.