US Army Corps of Engineers
Portland District Website


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.

Check the weather

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Before you go out on the water, get the forecast and don a life vest. Click here for the YouTube video: 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 or NOAA Weather Radio. Begin listening for extended outlooks with general information for the next five days, offered in both graphical and text formats.

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 

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:

Using our navigation locks

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This brochure, How To Lock Through, instructs recreational boaters on using our navigation locks.

PORTLAND, Ore. -- May 15 marks the start of the summer schedule for recreational boaters using navigation locks to travel past U.S. Army Corps of Engineers dams on the Columbia and Snake rivers.

Portland District dams with locks include John Day Dam, near Rufus, Oregon; The Dalles Dam, near The Dalles, Oregon; and Bonneville Dam, near Cascade Locks, Oregon. The summer recreational vessel lockage schedule is as follows:

 Recreational lockage schedule May 15 through Sept. 14



9 a.m.

9:30 a.m.

12 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 eight 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. 14. 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.

Arrangements for special lockages outside the above scheduled times, for flotillas or other unique requirements sponsored by yacht clubs, marinas, and other groups, may be scheduled at least 24-hours in advance.

Call to schedule special lockages:

Lock and Dam

Phone number



The Dalles


John Day




Ice Harbor


Lower Monumental


Little Goose

509-399-2233 ext. 231

Lower Granite

509-843-1493 ext. 231

Lockages outside the scheduled times will be considered for flotillas or other organized events sponsored by yacht clubs, marinas and other groups, provided 24-hour advance arrangements are made with the appropriate location.

All vessel owners and operators lock through at their own risk and must comply with the Corps’ safe-lockage policy. Portland District’s navigation information and the brochure "How to Lock Through."

In Walla Walla District, navigation lock facilities are available at McNary Dam, near Umatilla, Ore.; Ice Harbor Dam, near Burbank, Wash.; Lower Monumental Dam, near Kahlotus, Wash.; Little Goose Dam, near Starbuck, Wash.; and Lower Granite Dam, near Pomeroy, Wash. Walla Walla District’s recreational vessel lockage schedule is available here.  

The Corps’ Portland and Walla Walla districts maintain about 350 miles of the federal navigation channel from Portland, Ore. to Lewiston, Idaho. Ten million tons of commercial cargo, valued at $1.5 to $2 billion, is transported each year, according to navigation industry data. The Columbia-Snake navigation system is part of a larger waterborne commerce system that is vital to the economic health of the Pacific Northwest. This import\export gateway allows river transport 465 miles inland from the Pacific Ocean to Lewiston, Idaho. 

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.