Alabama, river, United States

Alabama, river, 315 mi (507 km) long, formed in central Ala. by the confluence of the Coosa and Tallapoosa rivers N of Montgomery, Ala., and flowing SW to Mobile, Ala., where it joins the Tombigbee to form the Mobile River; drains c.22,600 sq mi (58,500 sq km). In the 1800s the river played an important role in the development of the region's economy as a transporter of goods. It remains an important mover of farm products, lumber, and manufactured goods. The Cahaba River, its chief tributary, is the source of water for Birmingham, Ala.

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