Lake Sammamish State Park is a park at the south end of Lake Sammamish, in King County, Washington, United States. The park is administered by the Washington State Park System. The park covers an area of 512acres and has 6858ft of waterfront and is known for its boating and watersport activities, such as waterskiing. The park has about 250 parking stalls for vehicle/trailer combinations. Issaquah Creek enters Lake Sammamish in the park.The State Park is accessible from Interstate 90 at exit 15 and the north end of State Route 900. Local access uses East Lake Sammamish Parkway SE and NW Sammamish Road, both are separate alignments of former State Route 901. Public transit (bus) riders can access the Park via Metro Transit's routes 200, 216, 217, and 927.The state park is the center of a controversy over the ecological benefits of beavers.FacilitiesLake Sammamish State Park includes numerous day-use facilities allowing a wide range of recreational uses. The park's facilities are grouped in three areas. The area west of Issaquah Creek includes picnic tables and shelters, two swimming beaches (Tibbetts Beach and Sunset Beach), restrooms, an RV sanitary dump, and athletic fields. Parking is available in many lots. Athletic fields include two softball fields, seven full-size soccer fields, and four youth-size (smaller) soccer fields. Separate parking is provided near each group of soccer fields. An entrance on NW Sammamish Road provides access to this area.
