The park is about 40 miles north of Pittsburgh, via I-79, near the intersection of PA 19 and US 422.
2697 McConnells Mill Road
Portersville, PA 16051
McConnells Mill State Park, in Lawrence County, encompasses 2,546 acres of the spectacular Slippery Rock Creek Gorge. Created by the draining of glacial lakes thousands of years ago, the gorge has steep sides and the valley floor is littered with huge boulders. The gristmill was built in the 1800’s to grind grain for the community. The park is open from sunrise to sunset, year-round.