Due to commissioning issues, this outage is delayed.  As soon as we have specific dates, we will post the updated outage schedule.  

 There will be slower lockages at the Lower Monumental navigation lock from 0700-1600, on Monday, 24 November 2025, to allow a contractor to connect new power feeders to the lock tainter valves.  On this day, lockages are expected to require an additional 15 minutes to complete. 

On Tuesday, 25 November 2025, the lock will be removed from service from 0700-1300 to allow the contractor to perform commissioning of the new lock electrical switchgear.

             PROJECT AFFECTED:  Lower Monumental Lock and Dam - Snake River Mile 41.6

For additional information contact the Lower Monumental Operator at (509) 282-7231. Call Sign WUJ43 Lower Monumental, or the NWW Operations Division at (509) 527-7364.