West Branch State Park offers multiple boat launch ramps providing access to the 2,650-acre Michael J.

Kirwan Reservoir, including the Camp Ramp (two paved lanes with ample parking and lighting in the campground), East Ramp (two paved lanes with courtesy docks), West Ramp (two paved lanes with life jacket loaner board), Rock Spring Road Ramp (gravel ramp on the north end), and Knapp Road Ramp (primitive gravel ramp on the west end).

The lake is designated for unlimited horsepower with a 300-foot no-wake zone from shorelines, and amenities include a seasonal marina with boat rentals, dock rentals, fuel, and supplies, plus accessible fishing piers and two designated boat swimming areas.