Shikellamy State Park is in Union and Northumberland counties. The 78-acre Shikellamy Overlook section is on the western shore of the Susquehanna River and overlooks the confluence of the West and North Branches of the Susquehanna River. The 54-acre Shikellamy Marina section is in Northumberland County, between the Borough of Northumberland and the City of Sunbury on the southern tip of Packer’s Island, at the confluence of the West Branch and North Branch Susquehanna River.
