Allegheny River

The Allegheny River ( AL-ig-AY-nee; Seneca: Ohi:yo'; Unami: Alikehane) is a 325-mile-long (523 km) river that is located in western Pennsylvania and western New York in the United States. The chief tributary of the Ohio River, the Allegheny runs from its headwaters just below the center of Pennsylvania’s northern border, heads northwest into Western New York, then zigzags southwesterly back across the border to flow through Western Pennsylvania and finally join the Monongahela River at Forks of the Ohio near Downtown Pittsburgh, Pennsylvania.
The Allegheny River is, by volume, the main head...