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Rotating image showing Portland District's dredging and survey vessels Our first mission, eliminating impediments to navigation on the Pacific Northwest's rivers, dates back to 1871.

We maintain safe and reliable channels, harbors and waterways for the transportation of commerce, support to national security and recreation.


For information about the December 2016-March 2017 extended navigation lock outage at the Corps' Columbia and Snake rivers, visit the FY17 lock outage web page.

(Click the images of our vessels to the right for the print-friendly .PDF version)

For more information

Contact us:

Phone: 503-808-4510

Email us about our Navigation projects

Check the weather

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Click here to expand contentClick here to collapse content  Before setting out, obtain the latest marine forecast and warning information at www.weather.gov/marine

Before you go out on the water, get the forecast and don a life vest. Click here for the YouTube video: http://www.youtube.com/watch?v=VKR9Vk5lftc&feature=youtu.be This video outlines the importance of accurate and up-to-date marine weather forecasts before venturing out.


Understanding marine forecasts is critical to safe boating. Weather and wave conditions can change suddenly, catching boaters off-guard and creating life-threatening conditions. Before setting out, obtain the latest marine forecast and warning information from www.weather.gov/marine or NOAA Weather Radio. Begin listening for extended outlooks with general information for the next five days, offered in both graphical and text formats.

Link to hydrosurveys

Our hydrosurveys content has been given its own page here:


Fast facts about Portland District navigation


  • We manage 485 navigable river miles in the Columbia River Basin


  • We operate and maintain three of Northwestern Division's 10 locks
  • Our locks pass 10 of the 50.5 million tons of commerce shipped annually

Ports and harbors

  • 10 deep draft (greater than 14 ft.) ports
  • 12 shallow draft harbors
  • 12 large-scale jetty systems 


  • Two hopper dredges: Yaquina and Essayons
  • Material dredged: 18.9 million cubic yards 

Using our navigation locks

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The U.S. Army Corps of Engineers begins its summer recreational vessel lock schedule for its Columbia River dams May 15. The summer lock schedule will continue through Sept. 15, 2015 at the following Portland District locks:

Bonneville Lock and Dam at Columbia River Mile 145
The Dalles Lock and Dam at Columbia River Mile 191
John Day Lock and Dam at Columbia River Mile 216

Upstream  Downstream 
 9 a.m.  9:30 a.m.
 12:01 p.m. 12:30 p.m.
 3 p.m. 3:30 p.m.
 6 p.m. 6:30 p.m.
 9 p.m. 9:30 p.m.

The lockage schedule is the same for Corps dams in Portland and Walla Walla districts, ensuring identical recreational vessel lockage schedules for the entire Columbia-Snake river system. 

This schedule will remain in effect until Sept. 15. Recreational vessel operators have precedence over commercial vessels during the designated times. At other times, recreational vessels may be allowed to lock through with commercial craft at the discretion of the lockmaster. For information about special lockages and other tips, click here

Everyone on the vessel must wear a personal flotation device during lockages. All vessel owners/operators lock through at their own risk, and must follow instructions from the lock operator when using the locks or when operating in the vicinity of the locks. The lock operator has final authority on the suitability of a craft for lockage. For more information on safe lockage practices, please read our “How to Lock Through” brochure

You may use the radio frequencies listed in our “How to Lock Through” brochure, or call the lockmaster when you arrive at the navigation lock: 

Bonneville 541-374-8323
John Day 541-298-9712
Ice Harbor 509-543-3231
Little Goose 509-399-2233 ext. 231
Lower Granite 509-843-1493 ext. 231
Lower Monumental 509-282-3218
McNary 541-922-2231
The Dalles 541-298-4007

All vessel owners and operators lock through at their own risk and must comply with Corps’ safe lockage requirements, summarized in our “How to Lock Through” brochure.

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This brochure, How To Lock Through, instructs recreational boaters on using our navigation locks.
Willamette Falls Locks are closed to the public since November 2011. Due to concerns about the condition of the gudgeon anchors, or the equipment that helps move and stabilize the lock gates, the Portland District's dam safety officer placed the locks in a non-operational status.

Hazards to navigation

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The U.S. Army Corps of Engineers and the U.S. Coast Guard have authority to remove hazards to navigation from the waterways of the United States. 
Generally, the U.S.Coast Guard is the primary agency to identify and remove a hazard to navigation; however, the U.S. Army Corps of Engineers may be asked for assistance. Either USCG or USACE may remove hazards at the owner's expense. Local port districts, city, county and state agencies may also take legal action against an owner for removing a hazard to navigation within their jurisdictions.

Authority for removal of hazards to navigation by the U.S. Army Corps of Engineers is referenced in Sections 15-20 of the River and Harbor Act of 1899.
Guidelines for coordination, removal of hazards to navigation, and cost recovery between the United States Coast Guard and the United States Army Corps of Engineers are found in the following:


Send an email with the subject "Hazards to Navigation," your questions or comments, and your preferred contact information to Hazards to Navigation Coordinator at: