Black River (Mackinac County)

Black River is an 11.0-mile-long (17.7 km) river on the Upper Peninsula of the U.S. state of Michigan. The river flows into Lake Michigan at 46°05′37″N 85°20′30″W, approximately 5 miles (8 km) east of Naubinway.

The main branch of the river rises at 46°11′59″N 85°22′13″W in a marshy area in eastern Garfield Township near Cranberry Lake Bog. The East Branch rises at 46°08′05″N 85°16′46″W in Hudson Township and joins the main course at 46°05′47″N 85°20′24″W. All of the river's drainage basin is within Mackinac County, much of it within the Lake Superior State Forest.

Tributaries (from the mouth):