19-031 Lower Monumental Dam’s navigation lock temporarily changes hours of operation April 9-12

Published April 8, 2019

Lower Monumental Dam’s navigation lock, located at Snake River Mile 41.6 near Kahlotus, Washington, will temporarily be closed to vessel traffic from 6 a.m. to 6 p.m. on April 9-12, according to operations officials with the U.S. Army Corps of Engineers’ Walla Walla District.

The temporary restricted hours of operation is necessary to allow workers safe access to repair one of the lock’s tainter valves. At the discretion of the lock operator, recreational vessels may be allowed to lock through with commercial vessels during hours of operation, under daylight conditions.

The Corps has notified commercial navigators and other stakeholders of the temporary closure. The Corps coordinates navigation maintenance with inland shippers and cruise lines to achieve minimal impact to the various industries that use the locks. Public Notices and other navigation lock information are available on the Walla Walla District website at http://www.nww.usace.army.mil/Missions/Navigation/.


Public Affairs Office

Release no. 19-031