Slippery Rock Creek is a picturesque 50-mile tributary of Connoquenessing Creek flowing through northwestern Pennsylvania. Beginning near Hilliards in Butler County and winding westward before joining Connoquenessing Creek near Ellwood City in Lawrence County, this stream offers diverse fishing opportunities for anglers of all skill levels. Renowned for its scenic beauty, especially as it cuts through McConnells Mill State Park and its dramatic gorge (a National Natural Landmark formed approximately 140,000 years ago when a glacial lake burst), the creek combines excellent fishing with stunning natural scenery. While primarily known as a smallmouth bass fishery, Slippery Rock Creek also supports trout populations, particularly in its stocked sections, and provides anglers with opportunities to catch walleye, muskellunge, and other warmwater species in its lower reaches.