Codorus State Park is located on Pennsylvania Route 216, 3 miles (4.8 km) from the borough of Hanover.

Wars and the push of settlers, most of which were German farmers, led to the demise of the Susquehannocks, but industry soon followed.

The furnace supplied cannonballs and grapeshot for the continental army and employed Hessian prisoners to run the ironworks while many of the available workforce were off fighting the British.

The four original founders of Mary Ann Furnace had a great impact on the United States.

George Stevenson emigrated from Ireland and was employed as a deputy surveyor by the Penn Family.

When the British occupied Philadelphia and York became the capital of the Colonies, George Washington called on Stevenson to take charge of the supply lines.

In the French and Indian War, he served as an officer under John Armstrong in the Kittanning Expedition and as a captain of the light horse in the Forbes Campaign.

The purpose of the dam was to provide drinking water for Spring Grove and to meet the industrial needs of the paper plant owned by the P.H.

The construction of this dam was also beneficial to the people of Pennsylvania when a park was created on the shores of the newly made Lake Marburg.

Fishermen will find largemouth bass, yellow perch, crappie, muskellunge, catfish, northern pike, and bluegill in the warm waters of Lake Marburg.

[1] Canoes, kayaks, sailboats and motor boats up to 20 hp are all permitted on Lake Marburg, provided they are registered properly with the state.

The LaHo trail is 1.5 miles (2.4 km) long and follows the lakeshore of Lake Marburg through hardwoods and wetlands.

[1] There are several mountain biking trails on the northwestern side of the lake, open year round.

The most common game species are ruffed grouse, eastern gray squirrel, wild turkey and white-tailed deer.

Hunters are expected to follow the rules and regulations of the Pennsylvania State Game Commission.