US Army Corps of Engineers
Walla Walla District Website

Navigation

Navigation was the Corps of Engineers’ earliest Civil Works mission, dating to Federal laws in 1824 authorizing and funding the Corps to improve safety on the Ohio and Mississippi Rivers and several ports. The Corps provides safe, reliable, efficient, and environmentally sustainable waterborne transportation systems (channels, harbors, and waterways) for movement of commerce, national security needs, and recreation.

Walla Walla District staff designed, built and operate some of the highest lift locks in the world, with an average lift of more than 100 feet. Our navigation locks on the Snake and Columbia rivers help provide a navigable waterway 465 miles inland from Astoria, Oregon, to Lewiston, Idaho. During 2010 commercial shippers transported about 10 million tons of commodities.

Navigation Lock Notices

Navigation lock notices can be found here:

Notices to Navigation Interests (NTNI) site

Type the NTNI number (listed in parenthesis) into the search bar to bring up the notice you're after. Searches can also be made by river and river basin.

 

Most recent notices:

20-20b (12180-2) Second Amendment to Lock Closures at Lower Monumental for Floating Guidewall Work

20-20a (12180-1) Amendment to Lock Closures at Lower Monumental for Floating Guidewall Work

20-20 (12180) Lock Closures at Lower Monumental for Floating Guidewall Work

20-17a (11960-1) Amendment to Lower Granite Lock Delay for Tainter Valve Work

20-19 (12049) Slower Lockages at Lower Monumental

20-13a (11799-1) LMA and LGA Floating Guidewall Restrictions

20-18 (11992) 2020 Summer Lockage Hours schedule for Recreational Vessels

20-17 (11960) Lower Granite Lock Delay for Tainter Valve Work

20-16a (11921-1) Amendment to Ice Harbor Transit Delays 

20-16 (11921) Ice Harbor Transit Delays

20-15 (11898) Slower Lockages at Lower Monumental

20-14 (11809) HLD Floating Guidewall Restrictions

20-13 (11799) LMA and LGA Floating Guidewall Restrictions 

20-03e (11051-5) Fifth Amendment to 2020 NWW Annual Maintenance Outage

20-03d (11051-4) Fourth Amendment to 2020 NWW Annual Maintenance Outage

20-12 (11654) MOP Operations and Spring Spill Operations

20-03c (11051-3) Third Amendment to 2020 NWW Annual Maintenance Outage

20-03b (11051-2) Second Amendment to 2020 NWW Annual Maintenance Outage

20-10 (11499) Ice Harbor Diver Work at Floating Guide Wall 

20-09a (11421-1) Amendment to Lowering of Lower Granite Pool

20-09 (11421) Lowering of Lower Granite Pool

20-08a (11356-1) McNary Navlock Temporary Closure

20-08 (11356) McNary Navlock Temporary Closure

20-07a (11269-1) Lower Monumental Navlock Out of Service

20-07 (11269) Lower Monumental Navlock Out of Service

20-06a (11262-1) Ice Harbor Navlock Slower Lockages

20-06 (11262) Ice Harbor Navlock Slower Lockages

20-05 (11261) LLA Lowering of Pool for PIT Tag Work

20-04 (11128) Ice Harbor Navlock Temporary Closure

20-03a (11051-1) Amendment to 2020 NWW Annual Navlock Maintenance Outage

20-03 (11051) 2020 NWW Annual Navlock Maintenance Outage

Contact Us

Navigation

509-527-7364