The 68-acre Chapman Lake has a boat launch and 41 seasonal mooring spaces on the western side, and mooring for registered campers on the eastern shoreline. A boat rental concession is in the beach area.
Motorboats must display a boat registration from any state. Non-powered boats must display one of the following: boat registration from any state; launching permit or mooring permit from Pennsylvania State Parks that are available at most state park offices; launch use permit from the Pennsylvania Fish and Boat Commission.
The 68-acre Chapman Lake has fishing for cold-water and warm-water fish, including brook and brown trout, largemouth bass, bluegill, sunfish, yellow perch and sucker. ADA accessible fishing piers are on the eastern and western shorelines of Chapman Lake. Within the park and the surrounding Allegheny National Forest there is good trout fishing in the West Branch of Tionesta Creek and Farnsworth Run.