LNM13-4AD69A
SÉCURITÉReceived 23 Sept 2026, 00:00 UTCArchived 01 Nov 2026, 15:05 UTC
Warning text
Positions open on the mapCOLUMBIA RIVER - WESTPORT
General / Marine Construction (Excluding Bridges) / Dredging
The Dredge Oregon under contract with the Port of Portland will perform maintenance dredging near the Columbia River at Wauna-Driscoll Ranges from 11 Sep – 19 Oct 2026. Dredging operations will occur on the Washington side outside of the channel, between RM 44+10 and RM 44+30. Dredge Oregon, along with workboats Clackamas, Ivanhoff, and Williams monitor VHF 13 and 16. Mariners are requested to contact the dredge to make passing arrangements and proceed with minimum wake. Dredge personnel may also be reached by phone at (503) 369-1505 or (503) 789-7238.
Position 46-08.77N 123-21.52W
USCG Northwest District Local Notice to Mariners 40/2026