Preserving the History of the Hiram M. Chittenden Locks in Seattle, Washington

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Saturday, March 17, 2012

Small Lock Pumpout Completed

It is time for the annual inspection, cleaning, and maintenance of the small lock!

On March 13, the water remaining in the chamber was pumped out so the lower walls and floor are accessible.

The pumps for this operation are located underneath the Administration Building. If you peek in the basement windows, you may be able to see some of the plumbing for the pumps.

It takes about 4 hours to drain the small lock whereas the large lock (pictured left) requires about 10 hours to pump dry. See previous entries on the Large Lock Pump Out and More Pump Out Pictures.

Without unforeseen findings, the small lock re-opened to boat traffic by March 23.

See the Official Hiram M. Chittenden Locks page for the most current updates and information about the locks and the ship canal.

Next on the "to-do" list usually is installation of the smolt flumes on the spillway dam around April 16th and fish ladder cleaning in June.