To fill its massive water demands, P.H. Glatfelter Company, now known as Glatfelter Paper built Lake Lehman in 1942.
Later, to fill additional needs, the company built Lake PahaGaCo (P.H. Glatfelter Co.) in 1955.
It supplemented PaHaGaCo’s 1.3 billion gallons (1,300,000,000 US gallons (4.9×10⁹ l; 1.1×10⁹ imp gal)) with water from the Thomasville Stone & Lime Company quarries.
But a severe drought of 1963 proved that more water was needed.

The drought also convinced Pennsylvania officials that more reservoirs were needed and that dovetailed with separate state plans to build a new state park on the west branch of the three-pronged Codorus Creek.

Lake Marburg has 26 miles (42 km) of coastline.
The lake holds many different species of fish.
Fishermen will find largemouth bass, yellow perch, crappie, muskellunge, catfish, northern pike, and bluegill in the warm waters of Lake Marburg.
Cold water fishing is available in the east branch of Codorus Creek where anglers will find rainbow trout and brown trout that have been stocked for sport fishing by the Pennsylvania Fish and Boat Commission.
Canoes, kayaks, sailboats and motor boats up to 20 hp are all permitted on Lake Marburg, provided they are registered properly with the state.
To fill its massive water demands, P.H. Glatfelter Company, now known as Glatfelter Paper built Lake Lehman in 1942. Later, to fill additional needs, the company built Lake PahaGaCo (P.H. Glatfelter Co.) in 1955. It supplemented PaHaGaCo’s 1.3 billion gallons (1,300,000,000 US gallons (4.9×10⁹ l; 1.1×10⁹ imp gal)) with water from the Thomasville Stone & Lime Company quarries. But a severe drought of 1963 proved that more water was needed.
The drought also convinced Pennsylvania officials that more reservoirs were needed and that dovetailed with separate state plans to build a new state park on the west branch of the three-pronged Codorus Creek.
Lake Marburg has 26 miles (42 km) of coastline. The lake holds many different species of fish. Fishermen will find largemouth bass, yellow perch, crappie, muskellunge, catfish, northern pike, and bluegill in the warm waters of Lake Marburg. Cold water fishing is available in the east branch of Codorus Creek where anglers will find rainbow trout and brown trout that have been stocked for sport fishing by the Pennsylvania Fish and Boat Commission. Canoes, kayaks, sailboats and motor boats up to 20 hp are all permitted on Lake Marburg, provided they are registered properly with the state.
Codorus State Park