Spring Creek flows approximately 25 miles through Centre County, Pennsylvania, originating at the base of Tussey Mountain near Boalsburg before joining Bald Eagle Creek at Milesburg. This limestone spring creek stands as Pennsylvania's premier brown trout fishery, with the highest concentration of wild trout per mile of any stream in the state. The creek is maintained along its course by numerous spring seeps and several larger spring-fed tributaries, including Cedar Run, Slab Cabin Run, Logan Branch, and Buffalo Run—all excellent wild trout streams in their own right. The limestone geology creates a high pH level that supports abundant populations of crustaceans, baitfish, sculpins, and aquatic insects, providing rich year-round food sources that fatten the wild brown trout population. Spring Creek typically ranges from 30 to 40 feet wide from bank to bank and is relatively easy to wade, though aquatic plants can make wading difficult in some areas.