Plain Grove Township, Pennsylvania

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.

Jamison Run is a small tributary of Slippery Rock Creek in western Pennsylvania. The stream rises in northern Lawrence County and flows south entering Slippery Rock Creek at Elliotts Mills, Pennsylvania. The watershed is roughly 46% agricultural, 45% forested and the rest is other uses.

Black Run is a small tributary of Slippery Rock Creek in western Pennsylvania. The stream rises in northwestern Butler County and flows northwest entering Slippery Rock Creek south of Elliotts Mills, Pennsylvania. The watershed is roughly 48% agricultural, 45% forested and the rest is other uses.

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.

Liberty Township is a township in Mercer County, Pennsylvania, United States. The population was 1,397 at the 2020 census, down from 1,414 in 2010.

Amsterdam is an unincorporated community in Mercer County, in the U.S. state of Pennsylvania.

Hogue Run is a small tributary of Slippery Rock Creek in western Pennsylvania. The stream rises in northwestern Butler County and flows northeast then north entering Slippery Rock Creek at Camp Crestview. The watershed is roughly 34% agricultural, 61% forested and the rest is other uses.

Slippery Rock is a borough in Butler County, Pennsylvania. The population was 3,081 at the 2020 census. Slippery Rock is included in the Greater Pittsburgh Region. It is home to Slippery Rock University of Pennsylvania, attended by nearly 9,000 students as a member of the Pennsylvania State System of Higher Education. The post office for Slippery Rock Township was established in 1826 in the Ginger Hill area. The town of Ginger Hill was incorporated as a borough under the name Centreville in 1841, later changing its name to Slippery Rock in 1896.

Grove City Premium Outlets, (formerly Prime Outlets-Grove City) is an open-air outlet mall, which is situated on Interstate 79, four miles south of its junction with Interstate 80, in Springfield Township, west of Grove City, Pennsylvania. Located about sixty miles north of Pittsburgh and seventy miles south of Erie, Grove City Premium Outlets includes more than one hundred and thirty brand-name outlet stores, a food court, and one of the Pittsburgh Steelers' official team stores. It is one of the largest outlet malls in the United States.

Pine Township is a township in Mercer County, Pennsylvania, United States. The population was 4,808 at the 2020 census, down from 5,150 in 2010.

Harlansburg is a community 8 miles (13 km) east of the city of New Castle in Lawrence County, Pennsylvania, United States. The community is the home of the Harlansburg Station Transportation Museum and the Harlansburg cave, reputedly the longest cave in Pennsylvania.The following historical text is taken from History of Lawrence County Pennsylvania, 1887, which is now in the public domain.

Slippery Rock University, formally Slippery Rock University of Pennsylvania (The Rock or SRU), is a public university in Slippery Rock, Pennsylvania. SRU is a member of the Pennsylvania State System of Higher Education (PASSHE). The university has been coeducational since its founding in 1889. Its campus is on 611 acres (247 ha).