Chemung Subbasin

Geographic features: The Chemung River is formed by the confluence of the Tioga River, flowing northward from Pennsylvania, and the Cohocton River, flowing southeast in New York. The Chemung joins the Susquehanna River at Sayre, Pennsylvania.

The terrain is typical of glaciated watersheds, and is comprised of rolling to flat-topped uplands with steep-sided alluvial valleys in which the main rivers flow. Forest occupy the steeper hillsides bordering stream valleys, while the flatter hilltops and stream valleys are used for agriculture.

Drainage area: 2,604 square miles

Major tributaries: Chemung, Tioga, Cohocton, Cowanesque, Canisteo

Population: 250,323 (6% of the total basin population)

Major population centers: Elmira, Corning, Hornell (all in NY)

Water Use:
59.8% Power Generation
22.4% Municipal
9.7% Industrial
4.2% Agricultural
3.9% Domestic

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