Slower Lockages at Lower Monumental Navigation Lock

Notice Number: 202293/23-12
Date: 03/19/2023 00:01 thru 04/01/2023 07:00

The maintenance crew at Lower Monumental Lock and Dam will continue work to replace tainter valve hydraulic cylinders after the lock reopens to river traffic on 19 March 2023. This work is estimated for completion on 1 April 2023. River users should expect lockages to require an additional 10-15 minutes as this work is performed.


Lower Monumental Lock and Dam - Snake River Mile 41.6

For additional information on this work contact the NWW Operations Division at (509) 527-7364.


Navigation Business Line Manager
Walla Walla District