Pollock Run

Pollock Run is a 5.55 mi (8.93 km) long 2nd order tributary to the Youghiogheny River in Allegheny County, Pennsylvania. This is the only stream of this name in the United States.^[2]

Pollock Run Tributary to Youghiogheny River
Location of Pollock Run mouth Show map of Pennsylvania Pollock Run (the United States) Show map of the United States
Location
Country	United States
State	Pennsylvania
County	Westmoreland Allegheny
Physical characteristics
Source	Cedar Creek divide
• location	Rankins Corners, Pennsylvania[1]
• coordinates	40°10′09″N 079°49′12″W[2]
• elevation	1,060 ft (320 m)[1]
Mouth	Youghiogheny River
• location	Smithdale, Pennsylvania[3]
• coordinates	40°13′40″N 079°47′19″W[2]
• elevation	739 ft (225 m)[3]
Length	5.55 mi (8.93 km)[4]
Basin size	8.12 square miles (21.0 km2)[5]
Discharge
• location	Youghiogheny River
• average	9.16 cu ft/s (0.259 m3/s) at mouth with Youghiogheny River[5]
Basin features
Progression	Youghiogheny River → Monongahela River → Ohio River → Mississippi River → Gulf of Mexico
River system	Monongahela River
Tributaries
• left	unnamed tributaries
• right	unnamed tributaries
Bridges	Fallsburg Road, PA 51, PA 201, Moores Road, PA 136, Coal Hollow Road (x3), Margaret Street (x2)

Course

Pollock Run rises at Rankins Corners, Pennsylvania in Westmoreland County,^[1] and then flows southeast and then turns north to join the Youghiogheny River just into Allegheny County at Smithdale.^[3]

Watershed

Pollock Run drains 8.12 square miles (21.0 km²) of area, receives about 39.7 in/year of precipitation, has a wetness index of 335.80, and is about 40% forested.^[5]

Natural History

Pollock Run is the location of Pollock Run Slopes BDA, which contains a remnant Mesic Central Forest community and a rare plant species.^[6]