Fishing Creek originates in the highlands of Clinton County, Pennsylvania, flowing southeastward through a rugged valley carved into the Appalachian Plateau before joining Bald Eagle Creek near Mill Hall. This cold, freestone tributary drains approximately 181 square miles and maintains exceptional water quality throughout its 40-mile course, supporting one of Pennsylvania's premier wild trout fisheries. The creek's headwaters emerge from forested slopes near the Centre-Clinton county line, gathering volume from numerous spring-fed tributaries as it descends through a narrow, heavily wooded corridor. The upper reaches feature classic pocket water with boulder gardens, plunge pools, and cascading runs that provide ideal habitat for native brook trout and wild brown trout. As the creek progresses downstream, it widens and deepens, developing longer pools and riffle sequences while maintaining its cold-water characteristics even during summer months.

Paddling opportunities on Fishing Creek are limited by its relatively small size and technical nature. The lower sections near Lamar and Mill Hall become marginally navigable during spring runoff or after substantial rainfall, though paddlers should expect frequent shallow areas, exposed rocks, and occasional portages around fallen trees. The gradient and intimate scale make this primarily a fishing destination rather than a paddling river, though adventurous kayakers occasionally explore the lower reaches during high water.

The creek corridor supports dense riparian vegetation dominated by eastern hemlock, which provides critical shade that keeps water temperatures suitable for trout year-round. White-tailed deer, black bears, wild turkeys, and various songbirds inhabit the surrounding forests. Bald eagles and ospreys occasionally hunt along the lower creek near its confluence with Bald Eagle Creek.

Pennsylvania Route 477 parallels much of Fishing Creek's length, providing access at numerous bridge crossings and pull-offs. The communities of Cedar Springs, Lamar, and Mill Hall serve as reference points for creek access, with Mill Hall offering the closest services and amenities. The Narrows—a five-mile section between Lamar and Tylersville—represents the most celebrated stretch, featuring exceptional wild brown trout populations in water that rarely exceeds 65 degrees Fahrenheit.

The Pennsylvania Fish and Boat Commission manages portions of Fishing Creek under special regulations, including catch-and-release sections that protect the wild trout resource. Anglers far outnumber paddlers on this stream, and anyone considering a paddling trip should verify current water levels and be prepared for technical maneuvering in tight quarters. The creek's primary value lies in its pristine water quality and exceptional wild trout fishery rather than its paddling potential.