Seattle Parks and Recreation crews will begin water line leak detection work at Lake Union Park in South Lake Union, near MOHAI and The Center for Wooden Boats, beginning Monday, Sept. 21, 2026. Work is expected to continue through Friday, Sept. 25, and will include leak testing, excavation and any necessary work.
Visitors may notice crews, equipment, temporary fencing and portable restrooms in the area while work is underway. Thank you for your patience as we complete these necessary steps.