Black River (Ohio)

Black River
The Black River at its mouth at Lake Erie in Lorain
Country	United States of America
Basin
Main source	Elyria, Ohio, at confluence of East and West Branches, or northern Ashland County, Ohio for West Branch
River mouth	Lake Erie in Lorain, Ohio
Basin size	470 sq mi (1,200 km2)
Physical characteristics
Length	12 miles (19 km), or about 42 miles (68 km) including West Branch

The Black River is a tributary of Lake Erie, about 12 mi (19 km) long, in northern Ohio in the United States. Via Lake Erie, the Niagara River and Lake Ontario, it is part of the watershed of the St. Lawrence River, which flows to the Atlantic Ocean. The Black drains an area of 470 mi² (1217 km²).

According to the Geographic Names Information System, the Black River was formerly named "Canesadooharie River" and "Riviere en Grys." (These two historical names were actually originally intended to refer to nearby rivers, instead of the Black River.)

The Black River is formed in the city of Elyria by the confluence of its east and west branches:

From the confluence of the branches in Elyria, the Black River flows generally northwardly past Sheffield into the city of Lorain, where it enters Lake Erie at 41°28′20″N 82°10′58″W / 41.472131°N 82.182886°W / 41.472131; -82.182886. The mouth of the river forms part of the harbor of Lorain.