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Chemung River Watershed

Published Water Quality Monitoring and Assessment Reports

Biological Assessment Reports

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Facts about this Watershed

Map of NYS identifying the Allegheny Watershed
Click to view a detailed map of the watershed

The Chemung River Watershed (2,600 square miles) straddles the border between New York and Pennsylvania. The waters of the Chemung River flow across the western portion of Southern Tier of New York State before joining the Susquehanna River and eventually emptying into the Chesapeake Bay. The Chemung Watershed represents about one-eighth of the larger Susquehanna River Basin.

Location: Southern Tier of New York State

  • Most of Chemung and Steuben Counties,
  • Portion of southwestern Schuyler and western Allegany Counties, and
  • Small parts of Yates, Ontario and Livingston Counties.

Size: 1,740 square miles of land area within New York State.

Rivers and Streams: 4,086 miles of freshwater rivers and streams. Major tributary watersheds to the 41 miles of Chemung River in New York State:

  • Cohocton River (1,099 river miles )
  • Tioga/Canisteo Rivers (979 miles)

Lakes, Ponds and Reservoirs: 23 significant freshwater lakes, ponds, and reservoirs (2,904 acres):

  • Lamoka Lake/Mill Pond (825 acres)
  • Waneta Lake (781 acres)
  • Almond Lake (480 acres)

What You Can Do

Each of us lives in a watershed. On our Watershed Stewardship page are some tips on actions that you and your friends can take to help your watershed.

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