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 Terrell Creek Marsh is one of the few remaining saltwater/freshwater estuaries in north Puget Sound. A natural game sanctuary sits at the park's north end.
Source: wa_state_parks · last verified 2026-05-19