Black River is a river in the Upper Peninsula

Upper Peninsula of Michigan

The Upper Peninsula of Michigan is the northern of the two major land masses that make up the U.S. state of Michigan. It is commonly referred to as the Upper Peninsula, the U.P., or Upper Michigan. It is also known as the land "above the Bridge" linking the two peninsulas. The peninsula is bounded...

 of the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Michigan

Michigan

Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

. The river flows into Lake Michigan

Lake Michigan

Lake Michigan is one of the five Great Lakes of North America and the only one located entirely within the United States. It is the second largest of the Great Lakes by volume and the third largest by surface area, after Lake Superior and Lake Huron...

 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

Garfield Township, Mackinac County, Michigan

Garfield Township is a civil township of Mackinac County in the U.S. state of Michigan. The population was 1,251 at the 2000 census.- Communities :...

 near Cranberry Lake Bog. The East Branch rises at 46°08′05"N 85°16′46"W in Hudson Township

Hudson Township, Mackinac County, Michigan

Hudson Township is a civil township of Mackinac County in the U.S. state of Michigan. As of the 2000 census, the township population was 214.- Communities :...

 and joins the main course at 46°05′47"N 85°20′24"W. All of the river's drainage basin

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 is within Mackinac County

Mackinac County, Michigan

-Local Airports:*Mackinac County Airport *Mackinac Island Airport -Airline service:The nearest airports with scheduled passenger service are:*Chippewa County International Airport in Sault Ste...

, much of it within the Lake Superior State Forest

Lake Superior State Forest

Lake Superior State Forest is a state forest in the Upper Peninsula of Michigan. It is operated by the Michigan Department of Natural Resources. The North Country Trail utilizes this state forest for 43 miles of its route....

.

Tributaries (from the mouth):

• East Branch Black River
  • Borgstrom Creek
• Peters Creek
• Silver Creek
• Bark Creek