Penns Creek is Pennsylvania's longest limestone stream, flowing approximately 67 miles from its headwaters at Penns Cave (Pennsylvania's only water cavern) to its confluence with the Susquehanna River near Selinsgrove. This renowned waterway meanders through lush woodlands and picturesque farmlands, offering anglers a diverse fishing environment rich in aquatic life. Known for its world-class fly fishing opportunities and prolific hatches, Penns Creek has earned its reputation as one of Pennsylvania's premier trout streams. The creek features a variety of water types from narrow headwaters to wider sections with tumbled boulders, riffles, pools, and runs, creating ideal habitat for both wild and stocked trout. Its limestone geology contributes to fertile waters that support an extraordinary diversity of aquatic insects, making it an angler's paradise, particularly during the famous Green Drake hatch in late May and early June.