The site is nicknamed 'The Spillway' because the density of carp is so high that smaller ducks can occasionally walk across their backs to reach feeding areas.
Pymatuning Reservoir, which feeds the spillway, is the largest lake in Pennsylvania by surface area.
The carp at this location are not native to the reservoir but were introduced and have thrived in the unique conditions near the dam.
The spillway was constructed during the 1930s as part of a Civil Works Administration project to control water levels and prevent downstream flooding.
The carp population at the spillway is considered one of the largest concentrations of freshwater fish in the state.
The Linesville Spillway is located at Pymatuning State Park and is famously known as the place where 'the ducks walk on the fish.' The spillway controls water levels for Pymatuning Lake, creating a unique density of carp and waterfowl that congregate near the concrete overflow. Thousands of carp gather in the shallow waters, often creating a crowded visual effect as they compete for food. It is a managed state park site operated by the Pennsylvania Department of Conservation and Natural Resources. Visitors frequently feed the carp bread, though local signage may provide current guidance on wildlife interactions. The site serves as a hydraulic discharge point for the reservoir system. It is one of the most visited locations in the region due to its unusual wildlife behavior.
Directly along the center of the spillway railing looking down into the boiling mass of fish.
Bring a large bag of bread if you intend to participate in the traditional feeding activity.
Arrive early in the day to avoid the largest crowds and ensure easier parking.
Bring polarized sunglasses to better see the fish beneath the surface of the water.
Attempting to climb over the railings or entering the water, as the concrete spillway surface can be slippery and dangerous.
The site is generally accessible year-round, but wildlife activity is significantly lower during the winter months when the lake freezes.
Avoid leaning too far over the railings and do not attempt to reach into the water to touch the fish.
