Lower Columbia Navigation Channel: Dredged Material Sites Nearing Capacity, Corps Preparing New Placement Plan To Maintain Channel Until 2044

Army planners and Columbia River sponsor ports are hosting five virtual information sessions April 26-28 to update the public on their 20-year plan for managing dredged material from the Lower Columbia River. U.S. Army Corps of Engineers’ policy requires all federally maintained navigation projects demonstrate there is sufficient dredged material placement capacity for a minimum of 20 years.

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