Elk State Park is a 3,192-acre Pennsylvania state park in Jones Township, Elk County and Sergeant Township, McKean County, Pennsylvania, in the United States. East Branch Clarion River Lake is a man-made lake covering 1,160 acres within the park. The lake and streams in the park are stocked with cold and warm water fish. There are 3,151 acres of woo…Elk State Park is a 3,192-acre Pennsylvania state park in Jones Township, Elk County and Sergeant Township, McKean County, Pennsylvania, in the United States. East Branch Clarion River Lake is a man-made lake covering 1,160 acres within the park. The lake and streams in the park are stocked with cold and warm water fish. There are 3,151 acres of woods open to hunting.