Genesee River

Genesee River
Genesee River near Belmont
Genesee River watershed (Interactive map)
Native name	Čunehstí•yu• (Tuscarora)[1]
Location
Country	United States
State	New York, Pennsylvania
Counties	(see Navbox, below)
City	Rochester, NY
Physical characteristics
Source
• location	Ulysses Township, Potter County, Pennsylvania
• coordinates	41°53′33″N 77°43′54″W / 41.89250°N 77.73167°W / 41.89250; -77.73167[2]
• elevation	2,275 ft (693 m)[3]
Mouth	Lake Ontario
• location	Charlotte, Rochester, Monroe County, New York
• coordinates	43°15′30″N 77°36′08″W / 43.25833°N 77.60222°W / 43.25833; -77.60222[2]
• elevation	243 ft (74 m)[2]
Length	157 mi (253 km)
Basin size	2,500 sq mi (6,500 km2)
Discharge
• location	Lake Ontario
Discharge
• location	Portageville, NY

The Genesee River (/ˌdʒɛnɪˈsiː/ JEN-iss-EE) is a tributary of Lake Ontario flowing northward through the Twin Tiers of Pennsylvania and New York in the United States. The river contains several waterfalls in New York at Letchworth State Park and Rochester.

The river was historically used as a border between the lands of the Seneca to the east and the Erie and Wenro to the west. Later, the river provided the original power for the Rochester area's 19th century mills, and still provides hydroelectric power for downtown Rochester. Flooding occurred periodically in the river valley before construction of the Mount Morris Dam in the 1950s.