Washington State Park · WA
Lake Sylvia is open.
Last checked Wed, 14 Oct 2026 13:00:58 GMT
Lake Sylvia State Park is a 233-acre (94 ha) state-operated, public recreation area in the northern part of Montesano in Grays Harbor County, Washington.
Lake Sylvia State Park is a 233-acre (94 ha) state-operated, public recreation area in the northern part of Montesano in Grays Harbor County, Washington. The park is located in dense temperate rain forest.
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We derive Lake Sylvia's status from the park system's public alerts, refreshed hourly — this is our reading, not an official determination. As of the last check: Advisory: Notification Full method: how we check park status.