COLUMBIA & SNAKE RIVERS, Ore. & Wash. – The U.S. Army Corps of Engineers’ Walla Walla District will close the District’s navigation locks on the Columbia and Snake rivers in February for regularly-scheduled annual inspections, preventative maintenance and repairs.
Walla Walla District navigation locks are located at McNary Dam at Columbia River mile 292 and on the Snake River at Ice Harbor Dam at river mile 10, Lower Monumental Dam at river mile 41, Little Goose Dam located at river mile 70 and Lower Granite Dam located at river mile 107.
Expected closures of these locks are as follows:
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Project
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Location
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Closes
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Reopens
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McNary
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Columbia River Mile 292
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6:00 a.m., 13 February 2022
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11:59 p.m., 13 March 2022
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Ice Harbor
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Snake River Mile 9.7
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6:00 a.m., 13 February 2022
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11:59 p.m., 12 March 2022
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Lower Monumental
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Snake River Mile 41.6
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6:00 a.m., 19 February 2022
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11:59 p.m., 19 March 2022
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Little Goose
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Snake River Mile 70.3
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6:00 a.m., 13 February 2022
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11:59 p.m., 12 March 2022
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Lower Granite
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Snake River Mile 107.5
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6:00 a.m., 25 February 2022
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11:59 p.m., 19 March 2022
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The additional days at certain locations are necessary to perform non-routine work, which requires more time to complete than the typical two-week-long routine maintenance outage. The non-routine work includes gate cleaning, structural inspections, and equipment/machinery repair and replacement.
In addition, the Walla Walla District may temporarily suspend public vehicle crossings at Lower Monumental, Little Goose and/or Lower Granite due to work activity. Crossings are subject to closure at any time, however, the Corps will notify the public in advance of these closures if possible. Travelers in Washington state are strongly encouraged to call 888-DAM-INFO (888-326-4636) for dam-crossing information in advance of their travel.
Recreational vessel owners can find information on boat launches managed by the Walla Walla District at www.nww.usace.army.mil/Missions/Recreation.
To maintain safe and reliable passage through this valuable navigation system, the Corps coordinates the annually-scheduled lock closures with inland shippers and cruise lines to minimize impacts to lock users. For Walla Walla District navigation lock information and public notices, visit www.nww.usace.army.mil/Missions/Navigation.
For information about Portland District’s navigation lock closures, visit https://www.nwp.usace.army.mil/Media/News-Releases/Article/2900428/columbia-river-commerce-halts-for-extended-period-for-annual-outage/
Together, the Corps’ Portland and Walla Walla districts maintain 465 miles of commercial waterway from the Pacific Ocean to Lewiston, Idaho. The Columbia-Snake inland navigation system provides important benefits to business and the public. Approximately 9 million tons of cargo valued at over $3 billion is barged on the Columbia-Snake river system annually. The navigation system contributes jobs, facilitates import and export trade, and benefits the economy, environment and quality of life in the Pacific Northwest.