Chemung River

The Chemung River is a tributary of the Susquehanna River, approximately 46.4 miles long, in south central New York and northern Pennsylvania in the United States. It drains a mountainous region of the northern Allegheny Plateau in the Southern Tier of New York. The valley of the river has long been an important manufacturing center in the region but has suffered a decline in the late 20th century.

The Chemung River is formed near Painted Post in Steuben County, just west of Corning by the confluence of the Tioga River and Cohocton rivers. It flows generally east-southeast through Corning, Big Flats, Elmira, and Waverly. It crosses into northern Pennsylvania before joining the Susquehanna River approximately 2 miles south of Sayre.

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