Pymatuning State Park is a 3512 acres (14.21 km2) Ohio state park near Andover, Ashtabula County, Ohio in the United States. Pymatuning State Park contains 1,407 acres (5.69 km2) of Pymatuning Lake, one-quarter of which is in Ohio and three-quarters of which is in Pennsylvania. The lake provides fishing and boating year round.

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.