About
Loyalsock Creek, Pennsylvania — 1768-1780s Frontier, 1880s-1910s Lumber Era, 114,552-ac Loyalsock SF 64-mi Sullivan Lycoming. From Sullivan County gorges to Lycoming County farmland, Loyalsock Creek drops 64 miles of Class II-IV water at an average of 890 CFS. The upper sections through World's End State Park cut through a Pennsylvania Natural Area designation, with Class II-III drops and rocky gorge walls. Below that, the lower Loyalsock to Montoursville settles into Class II water more accessible to intermediate paddlers. Optimal flows run 400-2000 CFS on USGS gauge 01551850 — a wide window that keeps this creek runnable through most seasons. Loyalsock Adventures operates guided trips on the system. At higher flows within the optimal range, the Class II-III sections can push harder, making this a creek that rewards checking the gauge and matching your skills to the current conditions.
River conditions are community-verified. CFS ranges, difficulty ratings, and access points may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level.