Posey Island State Park

Posey Island State Park is a popular recreation area consisting of 1 acre Posey Island in San Juan County, Washington. The island is located .25 mi north of Pearl Island, near Roche Harbor, San Juan Island. It has about 1000 ft of saltwater shoreline and is part of the Cascadia Marine Trail, with campsites restricted to visitors arriving in non-motorized watercraft. The island-park is managed by the Washington State Parks and Recreation Commission. It became a state park in 1960 under lease from the U.S. Bureau of Land Management.