Birch Bay State Park is a 194-acre camping park with 8,255 feet of saltwater shoreline on Birch Bay and 14,923 feet of freshwater shoreline on Terrell Creek. The park is rich in shellfish resources and offers panoramic views of the Cascade Mountains and Canadian Gulf Islands. The Terrell Creek Marsh is one of the few remaining saltwater/freshwater estuaries in north Puget Sound. The park features nearly two miles of beach and great views of the Canadian Gulf Islands and the Cascade Mountains. A natural game sanctuary is at the park's north end.