Warren County's townships, nestled in the northwest corner of Pennsylvania, were originally formed from the land grants awarded by William Penn and his descendants to many individuals and families. Warren County was established March 12, 1800, and grew in prosperity from agriculture, lumber, oil, rafting, railroads, and tanning. The Allegheny National Forest and Allegheny River both provide magnificent arenas for many local recreational and business opportunities. In 1965, Warren County became home to the Kinzua Dam as the flooding of Corydon and parts of Kinzua Township created the reservoir. While most of the eastern and southern parts of the county are broken and hilly, the northeastern section is mostly glacial territory. Hearts Content in Watson Township is one of the few virgin timber tracts remaining in the Allegheny National Forest.