⚠️ NotificationPosted Jun 15, 2026 - Be careful in cold water! Even when the air is hot, rivers and lakes in King County can run very cold from melting snow. Cold water can trigger an involuntary gasp and rapid breathing that can cause drowning within seconds, even for strong swimmers and close to land. Always wear a life jacket and enter cold water slowly—especially kids! Find information about boater, river, and water safety at: Boating | Washington State Parks or kingcounty.gov/watersafety. For information about recent water temperatures at lake beaches, please visit: King County Swimming Beach Monitoring
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Notification
Posted Jul 28, 2026 - Sections of the Sunset Beach playground will be closed beginning August 4th due to playground maintenance and resurfacing. Warm and dry conditions are needed to complete these repairs. Please contact the park office at 425-455-7010 with any questions or concerns.
Part of the Park is Closed
Posted Mar 3, 2026 - Both the Issaquah Creek bridge and the Tibbetts Creek bridge are currently closed due to erosion from winter high creek levels. We do not have a current timeframe for when the repairs for these bridges will be complete. For questions or concerns regarding this closure please reach out to our Lake Sammamish staff at Lake.sammamish@parks.wa.gov