<P> The following account of the origin of the name Allegheny was given in 1780 by Moravian missionary David Zeisberger: "All this land and region, stretching as far as the creeks and waters that flow into the Alleghene the Delawares called Alligewinenk, which means' a land into which they came from distant parts' . The river itself, however, is called Alligewi Sipo . The whites have made Alleghene out of this, the Six Nations calling the river the Ohio ." </P> <P> Indians, including the Lenni Lenape and Iroquois, considered the Allegheny and Ohio rivers as the same, as is suggested by a New York State road sign on Interstate 86 that refers to the Allegheny River also as Ohiːyo' . The Geographic Names Information System lists O - hee - yo and O - hi - o as variant names . The river is called Ohi:' i: o ` (river beautiful) in the Seneca language . In New York, areas around the river are often named with the alternate spelling Allegany in reference to the river; for example, the Village of Allegany and Allegany State Park . Port Allegany, located along the river in Pennsylvania near the border with New York, also follows this pattern . </P> <P> The Allegheny River rises in north central Pennsylvania, on Cobb Hill in central Potter County, approximately 10 miles (16 km) south of the New York border . It flows west past Coudersport then turns north at Port Allegany and proceeds into western New York, looping westward across southern Cattaraugus County for approximately 30 miles (48 km), past Portville, Olean, St. Bonaventure University and Salamanca and flowing through Seneca Indian Nation lands close to the northern boundary of Allegany State Park before re-entering northwestern Pennsylvania approximately 20 miles (32 km) southeast of Jamestown, New York . </P> <P> It flows in a broad zigzag course generally southward across Western Pennsylvania; first flowing southwest past Warren, Tidioute, Tionesta, Oil City, and Franklin, forming much of the northwestern boundary of Allegheny National Forest . South of Franklin it turns southeast across Clarion County in a meandering course, then turns again southwest across Armstrong County, flowing past Kittanning, Ford City, Clinton, and Freeport . </P>

Where is the headwaters of the allegheny river