Westhaven State Park is a state-operated, public recreation area in Grays Harbor County, Washington. It consists of with shoreline access to the Pacific Ocean and Half Moon Bay.Activities and amenitiesPark activities include surfing, fishing, clamming, crabbing, beachcombing, and birdwatching. A 1.3mi, ADA-accessible, concrete walkway connects the park with Westport Light State Park.