The Canisteo River is a 61.0-mile-long (98.2 km) tributary of the Tioga River in western New York in the United States. It drains a dissected plateau, a portion of the northern Allegheny Plateau southwest of the Finger Lakes region, in the far northwestern reaches of the watershed of the Susquehanna River. It rises in the hills of northern Allegany County, approximately 15 miles (24 km) southwest of Dansville. It flows east into northern Steuben County, then generally southeast past Hornell and Canisteo. It joins the Tioga from the west in southeastern Steuben County, approximately 10 miles (16 km) north of ... Source: Wikipedia