Pymatuning Lake was formed in the 1930s by a dam on the Shenango River.
 The lake features multiple beaches and camping areas in both Pennsylvania and Ohio.
The northeastern part of Pymatuning Lake, east of the spillway and three miles (5 km) south of Linesville, is a protected gameland where colonies of 20,000 Canada geese and many more ducks winter each year.
The lake is the result of an earth dam three miles (5 km) north of Jamestown, Pennsylvania, whose outflow forms the Shenango River.
A north-south spillway crosses the northern part of the lake, with the gameland on the east side.

Along this spillway are a wildlife museum and the Linesville spillway, a site famous as "The Place Where the Ducks Walk on the Fishes' Backs".
Many people throw bread into the water here, and the resulting density of fish (carp) enables the ducks and other waterfowl to walk on top of the carp to vie for the thrown food.
The spillway was renovated in 2007.
The Pennsylvania Department of Conservation and Natural Resources had planned to prohibit bread as food for the carp and ducks on January 1, 2009, only permitting commercial fish food as part of an effort to clean up the area and increase its wild nature, but subsequently reconsidered.
Pymatuning Lake was formed in the 1930s by a dam on the Shenango River.  The lake features multiple beaches and camping areas in both Pennsylvania and Ohio. The northeastern part of Pymatuning Lake, east of the spillway and three miles (5 km) south of Linesville, is a protected gameland where colonies of 20,000 Canada geese and many more ducks winter each year. The lake is the result of an earth dam three miles (5 km) north of Jamestown, Pennsylvania, whose outflow forms the Shenango River. A north-south spillway crosses the northern part of the lake, with the gameland on the east side.
Along this spillway are a wildlife museum and the Linesville spillway, a site famous as "The Place Where the Ducks Walk on the Fishes' Backs". Many people throw bread into the water here, and the resulting density of fish (carp) enables the ducks and other waterfowl to walk on top of the carp to vie for the thrown food. The spillway was renovated in 2007. The Pennsylvania Department of Conservation and Natural Resources had planned to prohibit bread as food for the carp and ducks on January 1, 2009, only permitting commercial fish food as part of an effort to clean up the area and increase its wild nature, but subsequently reconsidered.
Pymatuning State Park (Pennsylvania)