US Army Corps of Engineers
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  • Chittenden Locks large chamber limited to half lockages, small lock closed

    The Hiram M. Chittenden Locks large chamber is limited to half lockages because of a power outage. Maintenance crews are working to restore power and lock wall crews are working to get vessels through as efficiently as possible.
  • Chittenden Locks small chamber closed for unscheduled maintenance

    The small lock chamber is closed to marine traffic this week with reopening possible by September 13. All vessels will use the large lock and boaters should be prepared with appropriate equipment and crew.
  • Chittenden Locks to close 8 hours May 29

    The large and small locks will close to all marine traffic eight hours, 8 a.m. to 4 p.m., May 29 to inspect and close a saltwater drain screen structure.
  • Chittenden Locks small chamber closing 2 weeks for annual maintenance

    SEATTLE – The Hiram M. Chittenden Locks small chamber will close to marine traffic noon, March 5 through 5 p.m., March 16. Crews will conduct maintenance and safety inspections during the small chamber closure. Foot traffic will not be affected and the large lock will continue around-the-clock operations for vessels. Lock wall staff will get commercial traffic through as quickly as possible.
  • Chittenden Locks Large chamber closed Nov. 6-22

    SEATTLE – The large lock at the Hiram M. Chittenden Locks in Ballard is scheduled to close to all marine traffic from 9 p.m., Nov. 6, to 8 p.m., Nov. 22, for annual maintenance. The small lock will still be available for vessels less than 120 feet in length and 26 feet in width throughout the large lock maintenance period. Mariners may experience delays, depending on passage demand.
  • Chittenden Locks kicks off Centennial Weekend Events Friday

    SEATTLE – Join the U.S. Army Corps of Engineers as we kick off the 4th of July weekend with several Centennial events, including the Hiram M. Chittenden Locks 100th Anniversary ceremony, 10 a.m., July 4.
  • Chittenden Locks hosting Fisheries Day June 17

    SEATTLE – Join Corps Natural Resource Management staff for a Fisheries Day 11 a.m.-3:30 p.m. June 17 at the Hiram M. Chittenden Locks. Twenty federal, tribal, state and local governments, and other organizations and groups are scheduled to offer information and activities about salmon and other environmental aspects.
  • Chittenden Locks help juvenile salmon on journey to Puget Sound

    SEATTLE – Studies have shown it’s no easy task for juvenile salmon to make it through the Lake Washington basin to Puget Sound and one of the obstacles they must pass is the Hiram M. Chittenden Locks in Ballard. Although salmon have been navigating the 100-year-old Locks for as long as it’s been operating, studies in the 1990s indicated they were having a difficult time. The Lock’s primary passage routes were deep in the water column, not easily found by juvenile salmon which stay closer to the surface.
  • Chittenden Locks small chamber to close about 10 hours Jan. 30

    The small lock at the Hiram M. Chittenden Locks in Ballard will close to all marine traffic from about 7 a.m. to 5 p.m., Jan. 30 for test drilling.
  • Hiram M. Chittenden Locks large chamber to close January 17 from 8 a.m. to noon

    The large lock will close to all marine traffic for pump plant-related work from 8 a.m. to noon January 17. The small lock will still be available for vessels less than 120 feet in length and 26 feet in width during this period.