The Beaver River is a tributary of the Ohio River in Western Pennsylvania in the United States with a length of approximately 21 mi (34 km). It flows through a historically important coal-producing region north of Pittsburgh. The Beaver River is formed in Lawrence County by the confluence of the Mahoning and Shenango rivers in the Mahoningtown neighborhood of New Castle. It flows generally south, past West Pittsburg and Homewood. It receives Connoquenessing Creek west of Ellwood City and flows past Beaver Falls and New Brighton. It joins the Ohio at Bridgewater and Rochester at the downstream end of a sharp bend in the Ohio approximately 20 mi (32 km) northwest of Pittsburgh. In the lower reaches near the Ohio River, the Beaver cuts through a gorge of underlying sandstone. The river is roughly parallel to the border with the state of Ohio, with both Interstate 376 and Pennsylvania Route 18 running parallel to the river itself.
Slippery Rock Creek is a small stream in Western Pennsylvania, a tributary of Connoquenessing Creek. From its source in Hilliards in Butler County, it flows through McConnells Mill State Park before flowing into the Connoquenessing in Ellwood City. Then, the Connoquenessing flows into the Beaver River just three miles south from the mouth of Slippery Rock.
The Shenango River is a principal tributary of the Beaver River, approximately 100 mi (160 km) long, in western Pennsylvania in the United States. It also briefly flows through small portions of northeastern Ohio. Via the Beaver and Ohio Rivers, it is part of the watershed of the Mississippi River.
Tenmile Creek is a stream in Washington and Greene Counties, Pennsylvania, USA. It is a tributary of the Monongahela River.
Wolf Creek is a 24.74 mi (39.82 km) long tributary to Slippery Rock Creek that rises from Pine Swamp in Mercer County and flows south to Butler County, Pennsylvania. Wolf Creek drains the Borough of Grove City, Pennsylvania.
Neshannock Creek is a 25.65 mi (41.28 km) long tributary to Shenango River that forms at the confluence of Cool Spring and Otter Creek in Mercer County and then flows south to Lawrence County, Pennsylvania. This creek is known for its fly fishing at Volant, Pennsylvania.
Little Neshannock Creek is a 13.32 mi (21.44 km) long tributary to Neshannock Creek in Lawrence County that rises in Mercer County. This creek drains several glacial wetlands and the Borough of New Wilmington, Pennsylvania.
Taylor Run is a small tributary of Slippery Rock Creek in western Pennsylvania. The stream rises in southern Mercer County near Drake and flows south into Lawrence County entering Slippery Rock Creek upstream of Harlansburg, Pennsylvania. The watershed is roughly 60% agricultural, 30% forested and the rest is other uses.
McMurray Run is a small tributary of Slippery Rock Creek in western Pennsylvania. The stream rises in northwestern Butler County and flows south entering Slippery Rock Creek at Rock Hill Camp. The watershed is roughly 39% agricultural, 53% forested and the rest is other uses.
Hottenbaugh Run is a tributary of Neshannock Creek in western Pennsylvania. The stream rises in east-central Lawrence County and flows south then west entering Neshannock Creek at Painter Hill. The watershed is roughly 53% agricultural, 40% forested and the rest is other uses.
Potter Run is a tributary to Neshannock Creek in western Pennsylvania. The stream rises in south-central Lawrence County and flows west and enters Neshannock Creek just downstream of Volant, Pennsylvania. The watershed is roughly 50% agricultural, 44% forested and the rest is other uses.
Hunters Run is a tributary to Neshannock Creek in western Pennsylvania. The stream rises in northeastern Lawrence County and flows northwest entering Neshannock Creek near Springfield Falls, Pennsylvania. The watershed is roughly 32% agricultural, 60% forested and the rest is other uses. This watershed drains the northern portion of State Game Lands #284 and is the location for Springfield Falls, a prominent waterfall on the run.
Mill Run is a tributary to Neshannock Creek in western Pennsylvania. The stream rises in southeastern Mercer County and flows generally northwest entering Neshannock Creek near Milburn, Pennsylvania. Mill Run watershed is roughly 36% agricultural, 56% forested and the rest is other uses.
Pine Run is a tributary to Neshannock Creek in western Pennsylvania. The stream rises in southeastern Mercer County and flows west entering Neshannock Creek south and downstream of Mercer, Pennsylvania. The watershed is roughly 41% agricultural, 50% forested and the rest is other uses.
Pine Run is a tributary to Neshannock Creek in western Pennsylvania. The stream rises in south-central Mercer County and flows southeast entering Neshannock Creek south and downstream of Mercer, Pennsylvania. The watershed is roughly 46% agricultural, 45% forested and the rest is other uses.
Indian Camp Run is a 2.70 mi (4.35 km) long 1st order tributary to Brokenstraw Creek. It is classed as a cold water fishery by the Pennsylvania Fish and Boat Commission.
Mill Creek is a 11.36 mi (18.28 km) long 2nd order tributary to French Creek in Mercer and Venango County, Pennsylvania.
North Deer Creek is a 9.24 mi (14.87 km) long 2nd order tributary to French Creek in Mercer County, Pennsylvania.
McCune Run is a 4.57 mi (7.35 km) long 3rd order tributary to French Creek in Venango County, Pennsylvania.
Powdermill Run is a 4.32 mi (6.95 km) long 2nd order tributary to French Creek in Venango County, Pennsylvania, Crawford and Mercer Counties, Pennsylvania.
