The Black River is a 41.1-mile-long (66.1 km) river on the Upper Peninsula of the U.S. state of Michigan, flowing mostly in Gogebic County into Lake Superior at 46°40′03″N 90°02′57″W. Its source at 46°18′54″N 90°01′15″W is a boreal wetland on the border with Iron County, Wisconsin. The northern section of the river, 14 miles (23 km) within the boundaries of the Ottawa National Forest, was designated a National Wild and Scenic River in 1992.
At the Lake Superior mouth of the Black River is Black River Harbor, a former fishing station where commercial fishermen brought in cargoes of lake trout. The North Country Trail crosses the river here via a suspension footbridge.

Quelle: Wikipedia