Sinnemahoning State Park offers multiple access points to First Fork Sinnemahoning Creek and the 145-acre George B. Stevenson Reservoir, with a boat launch at the Lake Day Use Area and an ADA-accessible fishing pier.

The park features a 5-mile Lowlands Trail (crushed gravel rail trail) that parallels the creek and provides easy access for hiking and biking, plus canoe and kayak rental programs available spring through fall.

Amenities include a campground with 35 electric sites, restrooms, showers, and a Wildlife Center, though cell service is limited in this remote mountainous area.