Tulpehocken Creek is a premier tailwater fishery located in eastern Pennsylvania, flowing from Blue Marsh Dam in Berks County. Commonly known as The Tully, this 39.5-mile tributary of the Schuylkill River offers exceptional trout fishing with sections up to 120 feet wide. The stream's limestone-influenced waters provide fertile conditions for thriving aquatic life, making it one of Pennsylvania's few quality tailwater trout streams. As a designated Pennsylvania Scenic River, the Tully features diverse water types including riffles, runs, pools, pocket water, and flats, offering anglers varied fishing experiences throughout its course. Two tributaries, Plum Creek and Cacoosing Creek, contribute cool water to the main stem, helping maintain suitable trout temperatures during warmer months.