The U.S. Army Corps of Engineers is seeking comment on a proposal by the Port Warren Moorage Association to dredge up to 1,000 cubic yards of accumulated sand and silt from below the mean high water in the Skipanon River from within the Port Warren Condominiums Moorage.

The area proposed to be dredged is approximately 0.8 acres, with a depth ranging from 0.5 to 2 feet, depending on the amount of accumulation. Dredging will be conducted using a clam-shell bucket operating from a spud-anchor barge. Floating silt curtains will be utilized where feasible to minimize turbidity.

The Portland Sediment Evaluation Team determined the dredge material and leave surfaces are suitable for in-water disposal.  The dredged material will be placed downstream in the Columbia River at Tansy Point below the mean high water in the river’s flow lane.

Comments can be sent by email to or by mail to: U.S. Army Corps of Engineers, Regulatory Branch, Danielle Erb, P.O. 2946, Portland, Oregon 97208-2946.

Comments should reference “NWP-2015-479,” the Corps’ project number, and be submitted no later than Dec. 21.

For more information on the project, visit

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