Saginaw, river, 22 mi (35 km) long, formed by the confluence of eight branches, SE Mich. The river drains a large area of lower Michigan and flows into Saginaw Bay (c.60 mi/100 km long and 15–25 mi/24–40 km wide), an arm of Lake Huron. Bay City, a port, is located at the bayhead near the river's mouth, and Saginaw is located upstream. Coal, pig iron, salt, and oil are transported on the river.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.