LNM13-CBAB91
SÉCURITÉReceived: 11 Nov 2026, 00:00Updated: 11 Nov 2026, 19:06
Keywords
- Operationsdredging operations, marine construction
Message content
CRIMS ISLAND TO ST HELENS - LONGVIEW
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 the Mouth of the Cowlitz River from 12 November 2026 – 31 January 2027. Dredging operations will occur near the navigational channel with placement on Howard Island. Dredge Oregon, along with workboats Clackamas, Ivanhoff, and Cowlitz will be monitoring VHF-FM Channels 13 and 16. Mariners are requested to contact the dredge to make passing arrangements and proceed with caution at their slowest safe speed to minimize wakes. For additional information, contact dredge personnel at (503) 369-1505 or (503) 789-7238.
Position 46-05.60N 122-55.17W
USCG Northwest District Local Notice to Mariners 45/2026