The Allegheny Reservoir, also known as Kinzua Reservoir, is a 24-mile-long impoundment spanning the Pennsylvania-New York border, created by the Kinzua Dam completed in 1965. This expansive 7,647-acre reservoir offers paddlers a unique experience with its elongated river-like shape and 90 miles of undeveloped forested shoreline. Access points include Willow Bay (with boat rentals and camping), Kinzua Wolf Run Marina (offering canoe and kayak rentals), Dewdrop Campground, Kiasutha Recreation Area, and various other launch sites managed by the Allegheny National Forest and Army Corps of Engineers. In New York, Allegany State Park provides additional access at the northern end.

Paddlers should note this is primarily "flat water" paddling with no discernible current. The reservoir's long fetch means wind can create significant waves, particularly when conditions exceed 5,000 CFS flow from Kinzua Dam. Experienced paddlers only should venture out in windy conditions, as whitecaps and dangerous wave heights can develop quickly. Staying close to shore and exploring protected coves and side channels is recommended, especially for less experienced paddlers. The reservoir sees heavy motorboat traffic during summer weekends, making early morning or evening paddles more peaceful.

The wilderness character is exceptional, with the reservoir completely surrounded by Allegheny National Forest in Pennsylvania and Allegany State Park in New York. Wildlife viewing opportunities include bald eagles, great blue herons, white-tailed deer, and various waterfowl. Multiple boat-in or hike-in primitive campsites dot the shoreline, including federally designated wilderness islands between Buckaloons and Tionesta, offering multi-day paddling trip opportunities.

Late fall through early spring provides the most serene paddling experience, with minimal boat traffic and stunning scenery, though paddlers must be prepared for thick morning fog and cold water temperatures requiring appropriate safety precautions.