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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. The District’s five navigation locks passed a total of 15,325,690 tons of cargo and commodities in 2020. McNary alone accounted for 4,691,390 tons of this total.  Approximately 81.7% of this total tonnage was wheat and rye products, and 4.1% was a total combination of fuel for vehicles and fuel oil for home heating. Wood and fertilizer products constituted most of the remaining tonnage.

NWW Navigation Lock Dimensions

 
Project Usable Length Usable Width Max Lift Normal Height Restriction* To Bottom of: At Tailwater Elevation:
McNary 650 ft 84 ft 83 ft N/A** N/A N/A
Ice Harbor 650 ft 84 ft 103 ft 67 ft Lift Gate 342 ft MSL
Lower Monumental 650 ft 84 ft 103 ft 65 ft
Bridge		 440 ft MSL
Little Goose 650 ft 84 ft 101 ft N/A** N/A N/A
Lower Granite 650 ft 84 ft 105 ft 100 ft Bridge 635 ft MSL

 

* This is the max clearance height available at normal tailwater elevation

** This project has a bascule bridge which is lifted during a lockage

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:

22-29 (201296) Slower Lockages at Ice Harbor Lock and Dam

22-28 (201294) Tainter Valve Repairs Cause Slower Lockages at McNary Lock and Dam

22-27 (201282) Slower Lockages at McNary Lock and Dam

22-25a (201264-1) Amendment to Slower Lockages at Ice Harbor

22-26 (201265) Walla Walla District Navigation Maintenance Outage

22-25 (201264) Slower Lockages at Ice Harbor

22-24 (201263) Walla Walla District Winter Rec Vessel Lockage Schedule

22-23 (201115) Slower Lockages at Ice Harbor

22-15a (19007-1) Amendment to Slower Lockages at Lower Granite

22-21 (20227) Walla Walla District Summer Recreational Vessel Lockage Schedule

22-19a (19568-1) Amendment to Little Goose Navigation Lock Closures

22-20 (19647) Caution Recommended at Lower Monumental

22-19 (19568) Little Goose Navigation Lock Closures

22-14b (19006-2) Second Amendment to Lower Monumental Floating Guide Wall Restrictions

22-14a (19006-1) Amendment to Lower Monumental Floating Guide Wall Restrictions

22-18 (19468) Little Goose Upstream Guide Wall Restrictions

22-16a (19008-1) Amendment to Slower Closures at Lower Granite

22-17 (19188)  Walla Walla District Minimum Operating Pool (Mop) Operations and Spring Spill Operations

22-02c (16731-3) Third Amendment to 2022 Walla Walla and Portland Districts Maintenance Outage

22-16 (19008) Slower Closures at Lower Granite

22-15 (19007) Slower Lockages at Lower Granite

22-14 (19006) Lower Monumental Floating Guide Wall Restrictions

22-13 (18986) Lower Granite Floating Guide Wall Restrictions

22-02b (16731-2) Second Amendment to 2022 Walla Walla and Portland Districts Maintenance Outage

22-12a (18889-1) Amendment to Lockage Delays at McNary

22-12 (18889) Lockage Delays at McNary

22-11 (18906)  Lockage Delays at Little Goose

22-10 (18246) Lockage Delays at Lower Granite

22-09 (18113) Lower Monumental Lock Closures

22-02a (16731-1) Amendment to 2022 Walla Walla and Portland Districts Maintenance Outage

22-04b (17526-2) Amendment to Lock Outages At Little Goose Navigation Lock

22-03a (16906-1) Amendment to Lower Monumental and Little Goose Floating Guide Wall Restrictions

22-08 (18086) McNary Lock Outage

22-04a (17526-1)  Amendment to Lock Outages At Little Goose Navigation Lock

22-07 (17686) Military Training at McNary Lock and Dam

22-05a (17566-1) Little Goose Navigation Lock Returned to Full Service

22-06 (17586) Slower Lockages at Ice Harbor

22-05 (17566) Unscheduled Navigation Lock Outage at Little Goose

22-04 (17526)  Lock Outages At Little Goose Navigation Lock

22-01a (16688-1) Amendment to Ice Harbor Navigation Lock Closures

22-03 (16906) Lower Monumental and Little Goose Floating Guide Wall Restrictions

22-02 (16731) 2022 Walla Walla and Portland Districts Maintenance Outage

22-01 (16688) Ice Harbor Navigation Lock Closures

Contact Us

Navigation

509-527-7364

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