Tolmie State Park is a 105acre Washington state park on Nisqually Beach on Puget Sound located 8mi northeast of Olympia. The park includes of saltwater beachfront at the mouth of a creek known as Big Slough as well as forest lands, a saltwater marsh, and an underwater park with artificial reef for scuba diving.Activities and amenitiesPark activities include hiking on three miles of trails, boating, swimming, scuba diving, fishing, crabbing, and birdwatching.