Black River (Alcona County)

Black River is a river in Alcona County in the U.S. state of Michigan. The main branch rises in northern Harrisville Township at and flows north through Haynes Township and Alcona Township and empties into Lake Huron at at the unincorporated community of Black River.
The north branch rises in Sanborn Township in southern Alpena County at. A large portion of its drainage basin is known as the Black River Swamp. The north branch joins the main branch in Alcona Township approximately from the mouth at.
Tributaries :

During the lumber boom, the town was formerly the local headquarters for Russell A. Alger's lumber company. The house on Lake Shore Road was removed in 2009; although Alger Street runs adjacent to the river.