Researched and compiled by Carrie Birdsong
State: Pennsylvania, New York
Source Location: Allegany Township, Pennsylvania, near Coudersport, PA at the corner of Ben Greenand Cobb Hill Roads.
Elevation: 2,450 ft. (750 m)
Mouth:
Location: Ohio River at Pittsburgh, PA
Elevation: 712 ft. (217 m).
Length: 325 mi (523 km).
Basin Size: 11,580 sq mi. (30,000 km2).
Discharge
Average: 19,750 cu ft/s (559 m3/s) at the
village of Natrona, PA (river
mile 24.3).
Progression: Allegheny River à Ohio
River à Mississippi River à
Gulf of Mexico.
Tributaries:
Left: Tionesta Creek, Clarion River, Redbank
Creek, Mahoning Creek, Crooked Creek
Kiskiminetas River, Buffalo Creek,
Chartiers Run.
Right: Conewango Creek, Brokenstraw
Creek, Oil Creek, French Creek,
Bull Creek, Deer Creek, Squaw
Run, Pine Creek, Girtys Run,
Puckett Creek.
Location: Ohio River at Pittsburgh, PA
Elevation: 712 ft. (217 m).
Length: 325 mi (523 km).
Basin Size: 11,580 sq mi. (30,000 km2).
Discharge
Average: 19,750 cu ft/s (559 m3/s) at the
village of Natrona, PA (river
mile 24.3).
Progression: Allegheny River à Ohio
River à Mississippi River à
Gulf of Mexico.
Tributaries:
Left: Tionesta Creek, Clarion River, Redbank
Creek, Mahoning Creek, Crooked Creek
Kiskiminetas River, Buffalo Creek,
Chartiers Run.
Right: Conewango Creek, Brokenstraw
Creek, Oil Creek, French Creek,
Bull Creek, Deer Creek, Squaw
Run, Pine Creek, Girtys Run,
Puckett Creek.
The Allegheny River is a 325-mile-long (523 km) headwater stream of the Ohio River that is located in western Pennsylvania and New York. It runs from its headwaters just below the middle of Pennsylvania’s northern border northwesterly into New York, then in a zigzag southwesterly across and through Western Pennsylvania to join the Monongahela River at the Forks of the Ohio at Point State Park, in Downtown Pittsburgh, Pennsylvania.
The Allegheny is, by volume, the main headstream of both the Ohio and Mississippi Rivers. Historically, the Allegheny was considered to be the upper Ohio River by both Native Americans and European settlers.
A 24-mile-long portion of the upper river in Warren and McKean counties of Pennsylvania and Cattaraugus County in New York forms the Allegheny Reservoir which was created by the Kinzua Dam in 1965 for flood control.
The name of the river is derived from one of many Delaware/Unami phrases that are homophones of the English name, with varying translations.
The Allegheny is, by volume, the main headstream of both the Ohio and Mississippi Rivers. Historically, the Allegheny was considered to be the upper Ohio River by both Native Americans and European settlers.
A 24-mile-long portion of the upper river in Warren and McKean counties of Pennsylvania and Cattaraugus County in New York forms the Allegheny Reservoir which was created by the Kinzua Dam in 1965 for flood control.
The name of the river is derived from one of many Delaware/Unami phrases that are homophones of the English name, with varying translations.
