US Coast Guard LNM - Northwest District (D13)
US · 111 in force · 16 new this week · 99 archived · updated 11 Nov 2026, 19:06 UTC · page 2 of 3
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring along the Vancouver Waterfront, Vancouver, WA on the Columbia River starting from the M. James Gleason Boat Ramp and ending at Hayden Bay Marina from 7:00 p.m. to 9:00 p.m. on December 18th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.70N 122-39.68W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-5B612ASÉCURITÉCOLUMBIA RIVER - VANCOUVER TO BONNEVILLE General / Marine Construction (Excluding Bridges) / Boring and Core Samples The Interstate Bridge Replacement Program will be conducting geotechnical investigations west of the existing Interstate 5 Bridge across the Columbia River between Vancouver, WA and Portland, OR at Columbia (RM 106.5) from 02 Nov 2026 – 31 Jan 2027. The work will infringe on the Alternate Barge Channel South, Alternative Barge Channel North, and the Vancouver to The Dalles Channel (lift span). The Tug South Creek and Barge Mark 12 will be on station and will reduce available horizontal clearances. The normal amount of horizontal clearance available at these channels will be reduced, and vessels are advised to use alternate channels if horizontal clearance is not sufficient in the channels. Only one channel will be reduced at any one time. Mariners are requested to maintain an appropriate distance and create no wake within 200 feet. Tug operator will be monitoring VHF Channels 13 and 16. During non-working hours the barge will remain on station with al-round white lights on all 4 corners, pursuant to CFR 83.30. Additional work will take place at other locations in the main stem Columbia River but will not infringe on the designated navigation channels on the main Columbia River. There will be no infringement on the available vertical clearances and no changes to the operation of the lift span. For more information, contact Mark Marine Services at 360-772-0916. Boring Details: Location (LAT/LONG) with State/End dates 1: IBR 10: 45-36.92N 122-40.71W (Dates: 21 – 29 Jan 2027) 2: IBR 11: 45-36.90N 122-40.66W (Dates:12 – 20 Jan 2027) 3: IBR 12: 45-36.94N 122-40.69W (Dates: 21 – 29 Jan 2027) 4: IBR 13: 45-36.94N 122-40.67W (Dates: 12 – 20 Jan 2027) 5: IBR 14: 45-37.01N 122-40.65W (Dates: 23 Dec – 11 Jan 2027) 6: IBR 15: 45-37.01N 122-40.64W (Dates: 14 – 22 Dec 2026) 7: IBR 16: 45-37.00N 122-40.62W (Dates: 3 – 11 Dec 2026) 8: IBR 17: 45-37.08N 122-40.61W (Dates: 20 Nov – 2 Dec 2027) 9: IBR 18: 45-37.07N 122-40.59W (Dates: 11 – 19 Nov 2027) 10: IBR 19: 45-37.15N 122-40.56W (Dates 23 Dec 2026 –11 Jan 2027) 11: IBR 20: 45-37.14N 122-40.55W (Dates 14 – 22 Dec 2026) 12: IBR 21: 45-37.14N 122-40.54W (Dates 3 – 11 Dec 2026) 13: IBR 22: 45-37.21N 122-40.53W (Dates 20 Nov 2 Dec 2026) 14: IBR 23: 45-37.21N 122-40.51W (Dates 11 – 19 Nov 2026) 15: IBR 24: 45-37.28N 122-40.48W (Dates 2 – 10 Nov 2026) 16: IBR 25: 45-37.27N 122-40.43W (Dates 2 – 10 Nov 2026) USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, TERRITORIAL SEA - SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) General / Miscellaneous Sea Risk Solutions LLC on behalf of The H.D.D. Company will be conducting marine dive operations off the outer Pacific Coast of Washington, near Westport, Grays Harbor County and Cohassett from 15 Oct 26 – 15 Feb 27. Marine dive operations will be during daylight hours only. R/V Zephyr will be the on-scene dive support vessel, monitoring channels VHF Channels 16 and 19. Mariners are requested to keep a minimum 0.5 NM distance from the dive vessel and proceed with caution. For additional information, contact Captain Ron Micjan at 503-632-5553 or [email protected] LAT/LONG OF MARINE OPERATIONS: Position 1. 46 52 28.3607 N; 124 08 22.0226 W Position 2. 46 52 26.7419 N; 124 08 22.0186 W Position 3. 46 52 25.1255 N; 124 08 21.8943 W Position 4. 46 52 23.5069 N; 124 08 21.8440 W Position 5. 46 52 21.8924 N; 124 08 21.6716 W Position 6. 46 52 20.2860 N; 124 08 21.3807 W Position 46-52.42N 124-08.37W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring along the Vancouver Waterfront, Vancouver, WA on the Columbia River starting from the M. James Gleason Boat Ramp and ending at Hayden Bay Marina from 7:00 p.m. to 9:00 p.m. on December 11th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.68N 122-39.62W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring along the Vancouver Waterfront, Vancouver, WA on the Columbia River starting from the M. James Gleason Boat Ramp from 7:00 p.m. to 9:00 p.m. on December 7th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.20N 122-36.98W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring along the North Portland Harbor, Portland, OR on the Columbia River starting at the M. James Gleason Boat Ramp from 7:00 p.m. to 9:00 p.m. on December 9th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.22N 122-37.28W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Marine Events / Boat Parade A ship parade will be occurring from the Fremont Bridge to Ross Island, Portland, OR, on the Willamette River starting from Riverplace Marina from 7:00 p.m. to 9:00 p.m. on December 7th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-30.65N 122-40.25W USCG Northwest District Local Notice to Mariners 45/2026
- FRANKLIN D ROOSEVELT LAKE - SPOKANE RIVER General / Marine Events / Fireworks 27 NOV 2026, 1900-1910. Fireworks display launched from barges on Lake Coeur d'Alene at approximately 47°40.276' N, 116°47.241' W. Vessels advise to remain 850 ft away from launch platforms during the display. Position 47-40.28N 116-47.23W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring along the Vancouver Waterfront, Vancouver, WA on the Columbia River starting from the M. James Gleason Boat Ramp and ending at Hayden Bay Marina from 7:00 p.m. to 9:00 p.m. on December 3rd, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.17N 122-37.27W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Marine Events / Boat Parade A ship parade will be occurring on the Willamette River between the Fremont Bridge and Ross Island, Portland, OR, starting and ending at Riverplace Marina from 7:00 p.m. to 9:00 p.m. on December 18th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-30.33N 122-40.08W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring along the North Portland Harbor, Portland, OR on the Columbia River starting and ending at the M. James Gleason Boat Ramp from 7:00 p.m. to 9:00 p.m. on December 4th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.18N 122-37.30W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-EB74FBSÉCURITÉCOLUMBIA RIVER - CHINOOK CHANNEL General / Marine Construction (Excluding Bridges) / Dredging HME Construction Inc will be performing clamshell dredging and dump scow disposal operations near Chinook Channel from 01 Nov – 01 Dec 2026, working 7 days a week 24 hours a day. Dredging will extend from the South of East Sand Island up to the entrance of Chinook harbor. Two separate dredge spoil placement sites will be located south of the Columbia River (46-14.96N 123-58.23W and 46-14.76N 123-58.46W). Vessels include Dredge Boat Sea Horse, one split-hull dump scow, Tug Terilyn and support tug Douglas, monitoring VHF Channels 13, 16, 67, 68, or 69. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. For additional information, please contact HME Project Manager at 503-250-1827 or 360-904-2978. USACE Contracting Officers Representative is Nathan Miller, 360-899-8223. Position 46-16.02N 123-57.37W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-B144E6SÉCURITÉCRIMS ISLAND TO ST HELENS - LONGVIEW General / Marine Construction (Excluding Bridges) / Dredging Dredge Oregon will be conducting dredging activities near Lower Dobelbower Bar on the Columbia River, (RM 69+00 to RM 70+00), between 26 Oct – 23 Nov 2026. Dredging operations will occur on the Oregon side outside of the channel near Howard Island. The Dredge Oregon, along with workboats Clackamas, Ivanoff, and Cowlitz will be monitoring VHF Channel 13 and 16. Mariners are requested to transit at their slowest safe speed to minimize wake when in the vicinity of a dredge and proceed with caution after passing arrangements have been made. Dredge personnel may be reached by phone at (503) 369-1505 or (503) 789-7238. Position 46-05.32N 122-55.22W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring within the Tri-Cities WA area on the Columbia River, starting under the cable bridge in Kennewick, WA, traveling upriver to Howard Amon Park in Richland, WA, and returning down river along the same route. The event will take place December 4th and 5th, 2026, from 6:00 p.m. to 9:00 p.m. each evening. This parade will involve up to 20 participants and mariners are requested to transit the area with caution. For additional details, contact Michael Rhodes at 509-554-6763. Position 46-13.07N 119-05.88W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Marine Events / Boat Parade A ship parade will be occurring on the Willamette River between the Fremont Bridge and Milwaukie Riverfront Park, Portland, OR, starting and ending from Riverplace Marina from 7:00 p.m. to 9:00 p.m. on December 15th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-29.27N 122-40.17W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Marine Events / Boat Parade A ship parade will be occurring along the Vancouver Waterfront, Vancouver, WA on the Columbia River starting from the M. James Gleason Boat Ramp and ending at Hayden Bay Marina from 7:00 p.m. to 9:00 p.m. on December 15th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-36.37N 122-40.55W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Marine Events / Boat Parade A ship parade will be occurring on the Willamette River between the Fremont Bridge and Ross Island, Portland, OR, starting and ending at Riverplace Marina from 7:00 p.m. to 9:00 p.m. on December 16th, 2026. This parade will involve up to 60 participants and mariners are requested to transit the area with caution. For additional details, contact Jay Hensleigh at 971-271-3395. Position 45-30.37N 122-40.10W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-6FC4F1SÉCURITÉSOUTH WILLAPA BAY - NAHCOTTA CHANNEL General / Marine Construction (Excluding Bridges) / Dredging Tokeland Dredging will be conducting dredging and disposal operations in Nahcotta Mooring Basin, South Willapa Bay, WA from 01 Oct – 15 Nov 2026. Dredging and disposal operations will be 24 hours per day, 7 days per week. Tokeland Dredge will monitor VHF channel 16 and use VHF channel 72 for operations. Disposal sites will occur at the South Channel Placement Site located in Willapa Bay. Mariners are requested to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. For additional information, contact Gabija Karisas at (206) - 764-3413 or email [email protected] USCG Northwest District Local Notice to Mariners 45/2026
- NORTH CHANNEL General / Bridges Multiple lights are extinguished. Position 46-12.92N 123-51.72W USCG Northwest District Local Notice to Mariners 45/2026
- LAKE WALLULA - SNAKE RIVER General / Miscellaneous The USACE Walla Walla District has scheduled the annual navigation lock maintenance closure for 2026. During this time, the Locks and Dams on the Columbia and Snake Rivers have scheduled routine inspections and maintenance, as well as some non-routine work. For the five (5) navigation locks in the Walla Walla District, the closure schedules are as follows: McNary (RM 292) – 0001 on 21 Feb 2026 to 2359 on 28 Mar 2026 Ice Harbor (RM 9.7) – 0001 on 21 Feb 2026 to 2359 on 28 Mar 2026 Lower Monumental (RM 41.6) – 0001 on 21 Feb 2026 to 2359 on 28 Mar 2026 Little Goose (RM 70.3) – 0001 on 21 Feb 2026 to 2359 on 28 Mar 2026 Lower Granite (RM 107.3) – 0001 on 21 Feb 2026 to 2359 on 28 Mar 2026 For additional information regarding McNary, Ice Harbor, Lower Monumental, Little Goose and Lower Granite lock maintenance closures, contact Walla Walla District, Operations Division, at (509) 527-7364. The Portland District lock maintenance schedule is published separately – mariners can contact Portland District at (503) 808-4510. Position 46-15.07N 118-52.88W USCG Northwest District Local Notice to Mariners 45/2026
- SHILSHOLE BAY - SALMONBAY General / Miscellaneous The Hiram M. Chittenden Locks will close the large lock chamber to conduct annual maintenance from 0600 on 02 Nov – 1700 on 20 Nov 2026. Marine traffic will continue to use the Auxiliary (small) lock chamber. Further information is posted on USACE website: https://www.nws.usace.army.mil/Missions/Civil-Works/Locks-and-Dams/Chittenden-Locks/Closures/. Mariners can also call the Lockmaster at (206) 297-9745. Position 47-39.93N 122-23.78W USCG Northwest District Local Notice to Mariners 45/2026
- UMPQUA RIVER General / Bridges OREGON – UMPQUA RIVER – Bridge Notice ODOT will be replacing the dolphins and bumpers under the Umpqua River Bridge (BRDG UID 38617) on US101 at Reedsport, OR. Test drilling from a barge will occur at multiple locations. Navigation and the operations of the draw will not be impacted. The second phase is to replace the bumpers and dolphins with a hammer driven pile. The drilling will occur from October 15, 2026, through December 31, 2026. The removal and replacement of dolphins and bumbers will occur during 2027 with dates TBD. Position 43-42.58N 124-06.05W USCG Northwest District Local Notice to Mariners 45/2026
- LAKE CELILO General / Bridges The Celilo rail bridge green open span light is extinguished. Position 45-38.95N 120-58.90W USCG Northwest District Local Notice to Mariners 45/2026
- STRAIT OF JUAN DE FUCA - SEQUIM BAY General / Autonomous Vessel Operations The Pacific Northwest National Laboratory (PNNL) will be deploying an autonomous docking platform and autonomous surface vessel for research activities in Sequim Bay, Washington (approximately 48-04.53N 123-01.44W; 48-03.74N 123-01.71W; and 48-03.49N 123-00.82W). Deployments will occur for a total of approximately 10 days between September 21, 2026, and December 21, 2026. Equipment will only be deployed during daylight hours and may be left unattended for up to 2 hours. Mariners are requested to use caution and reduce wake when transiting nearby during deployment and retrieval operations. The accompanying research vessel may be hailed on VHF-FM channel 16. For additional information, contact Rob Cavagnaro at 206-528-3372 or [email protected]. Position 48-03.60N 123-01.20W USCG Northwest District Local Notice to Mariners 45/2026
- PUGET SOUND - SHILSHOLE BAY General / Miscellaneous Hiram M. Chittenden Locks will close the Small Locks from 06:00, 07 DEC 2026 to 18:00, 18 JAN 2027, to conduct installation of components for the Emergency Closure System (ECS). During this time, the Large Lock will be available for lockings vessels. Further closure information is posted on USACE website: https://www.nws.usace.army.mil/Missions/Civil-Works/Locks-and-Dams/Chittenden-Locks/Operations/ Position 47-39.93N 122-23.85W USCG Northwest District Local Notice to Mariners 45/2026
- STRAIT OF JUAN DE FUCA - SEQUIM BAY General / Miscellaneous The Pacific Northwest National Laboratory (PNNL) will be deploying a buoy for research activities in Sequim Bay, Washington (approximately 48-04.69N 123-01.92W). The deployment will occur between approximately in September 2026 and last approximately 6 months. Mariners are requested to use caution and reduce wake when transiting nearby during deployment and retrieval operations. The accompanying research vessel may be hailed on VHF-FM channel 16. For additional information, contact Matt Howard at +1-805-320-7848 or [email protected]. Position 48-04.70N 123-01.92W USCG Northwest District Local Notice to Mariners 45/2026
- SNOHOMISH RIVER General / Bridges BNSF Railway will install scaffolding 4 feet below the north part of the bridge for maintenance from October 13, 2026, to November 25, 2026. Amber flashing lights will be installed on the bottom of the scaffolding. Maintenance work will occur Monday – Friday between the hours of 0800 – 1700. Mariners may contact BNSF Supervisor Structures Matt Wells 253-405-6074 in case of emergency. The swing draw will open as normal. Position 48-02.15N 122-11.03W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, EXCLUSIVE ECONOMIC ZONE (EEZ) - SECTOR COLUMBIA RIVER, TERRITORIAL SEA General / Miscellaneous PacWave continues to maintain a network of site monitoring equipment, seafloor instrumentation, and subsea cable infrastructure throughout the PacWave South wave energy test site, approximately 7 nautical miles WSW of the Yaquina Bay Entrance. Some of the monitoring buoys are low profile and may be difficult to see in elevated sea states. All buoys have a yellow hull, are lighted with a flashing amber light, and are deployed as single-point moorings. PacWave has also installed four long-term surface marker buoys that visually delineate the corners of the test site: NW (44°34.9988'N, 124°14.4998'W), NE (44°35.0465'N, 124°13.1008'W), SE (44°33.0437'N, 124°12.9700'W), and SW (44°33.0000'N, 124°14.3730'W). These corner markers are approximately 9 feet tall, have a yellow / red hull, a fixed yellow tower structure with integrated radar reflector, green grating on the lower half of the tower, reflective tape on the upper tower, and are lighted. These markers are also single-point moorings and will remain in place as part of PacWave’s maintained offshore infrastructure. Mariners should be aware that subsurface equipment and mooring components may also be present. Mariners are requested to avoid the test site if possible and to use caution when navigating in or near the area. For additional information, contact [email protected] or 541-737-9023. If there is an emergency or concerns regarding this equipment, please call our 24 / 7 Watch Desk at 541-819-4096. USCG Northwest District Local Notice to Mariners 45/2026
- POSSESSION SOUND - SARATOGA PASSAGE General / Naval Activity / Naval Testing (Surface / Underwater) The Naval Research Lab will be conducting a Sofar Wave buoy installation in Saratoga Pass from 22 Jul through 03 Aug 2016. These buoys will be in place until November 2026. There will be two sets of two buoys each, comprising of one anchored red polyball buoy, and one yellow spotter buoy tethered to the red polyball buoy. The hazard is a 5m tether line horizontally near surface from the Spotter to the red polyball buoy, and vertical mooring line from the red polyball to a clump weight anchor on the seafloor at the below locations. See attached diagram. Each set of buoys are in approximate positions 48°13'10.21"N, 122°34'2.09"W and 48°15'9.99"N, 122°34'1.05"W. The R/V Michael Uhl and R/V Surveyor will be on station during the deployment and will be monitoring VHF-FM Channel 16. For additional information, contact NRL Stennis at 228-688-5825. Position 48-13.17N 122-34.02W USCG Northwest District Local Notice to Mariners 45/2026
- UNION BAY REACH General / Bridges Washington – Portage Bay - University Bridge – Trolley Pole Replacement Combined Construction Inc. will be performing trolley pole replacement work on the University Bridge. Work will include replacement of trolley poles and associated anchor bolts at locations across the bridge, excluding the movable portion of the drawbridge. Work is scheduled to begin October 5, 2026, and continue through April 30, 2027. Typical work hours will be from 0600 to 1600. Anchor bolt installation will be performed using an Under Bridge Inspection Truck (UBIT), which will occupy a portion of the roadway and position equipment beneath the bridge during operations. Mariners transiting the area are advised to use caution while work is underway. For additional information regarding the project or work activities, please contact: Trena Chandler, P.M. Combined Construction Inc. (425) 320-6389 [email protected] Position 47-39.17N 122-19.23W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA General / Miscellaneous The causeway that connects Bateman Island to Richland, Washington, where the Yakima River enters the Columbia River, has been removed to restore the original flow of the river. USACE is required to monitor turbidity levels at two locations in the Yakima River; the first, approximately one mile upstream from the mouth, in approximate position 46-15.26N 119-15.24W, and a second at the southern point of Bateman Island, approximately 46-14.35N 119-13.35W. The water monitoring equipment will be deployed using anchored buoys which will be yellow with a flashing yellow light every three seconds (Fl Y 3s). For more information contact Ryan Ashcraft at the USACE Walla Walla office at (509) 704-0755. Position 46-14.35N 119-13.38W USCG Northwest District Local Notice to Mariners 45/2026
- DISTRICT 13, OCEANIC BOUNDARY TO EEZ - SECTOR COLUMBIA RIVER, EXCLUSIVE ECONOMIC ZONE (EEZ) General / Miscellaneous Offshore Westport, WA Approximate position: 46-45’36” N 124-35’24” W Sunken 35’ fishing vessel. Mariners are requested to transit the area with caution. For more details or comments contact Sector Columbia River Waterways Management at 503-572-3524 or email [email protected]. Position 46-45.50N 124-32.48W USCG Northwest District Local Notice to Mariners 45/2026
- COLUMBIA RIVER - WILLAMETTE RIVER General / Bridges / Lighting and Other Signals Clearance gauges missing Position 45-31.65N 122-40.15W USCG Northwest District Local Notice to Mariners 45/2026
- POSSESSION SOUND - SNOHOMISH RIVER General / Bridges / Construction SNOHOMISH, WA- SNOHOMISH RIVER - STATE ROUTE 9 BRIDGE - Max J Kuney Construction, under contract with the Washington State Department of Transportation, will be performing bridge-building construction activities from 1 Aug 26 through 31 Oct 27. This is a new SR9 bridge being built over Mile 12.2 of the Snohomish River, parallel to the existing bridge. Construction will occur during daylight hours, Monday through Saturday. There is a buoy-marked 90-foot-wide safety corridor for vessels to pass through as this work is being done. All work will occur well within the work zone designated by regulatory and channel marker buoys. For more information, contact Will Gruenhagen at (425)-736-0418 or [email protected]. Position 47-54.73N 122-06.52W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-B7056ASÉCURITÉSECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - CHETCO RIVER General / Marine Construction (Excluding Bridges) / Dredging The Port of Brookings Harbor will be conducting dredging operations inside Basin 1, Port of Brookings, OR from 01 Oct 2026 through 15 Feb 2027. Working hours will be 0800-1700 Monday through Saturday (No work on holidays). Disposal site will be ashore. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution. Working vessels will be monitoring VHF-FM channels 13 and 16. For additional information, contact Gary Dehlinger at (541) 373-0280 or [email protected] or Travis Webster at 541-291-7380 or [email protected]. USCG Northwest District Local Notice to Mariners 45/2026
- PUGET SOUND - ELLIOTT BAY General / Miscellaneous MUCKLESHOOT INDIAN TRIBE NET FISHERIES - Elliott Bay & Green/Duwamish River (Commercial) Will OPEN 6:00AM Friday May 29th and remain open until further notice. Gillnets only, 5 inch minimum mesh. Boats in the bay are allowed one net up to 1800 feet max net length. Fishers in the river are allowed three nets of up to 330 feet max net length. The river remains closed upstream of the Interurban Trail footbridge which is just upstream of the HWY167 bridge. The bay remains closed outside of a line from Pier 91 to the light at Duwamish Head. USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-6C53E5SÉCURITÉGeneral / Marine Construction (Excluding Bridges) / Facilities, Barriers, Manmade Reefs, Riprap, Jetties / Dikes Advanced American Construction will be constructing a new railroad bridge on the Washington side of the Columbia River near RM 168.2. at the confluence of the White Salmon River & Columbia River. Work includes heavy marine assets, critical lifts, and pile driving operations. The Derrick Barge AAC Millennium will be on station from 10 Nov 25 through 31 Dec 26. Working days are planned for Monday through Friday, 0700 to 1700. Onsite equipment will monitor VHF-FM channels 13 & 16 during working hours. Mariners are requested to reduce speed and avoid the work area. During non-working hours, the derrick barge will remain on station with steady white lights on all four corners. Please call Kristian Hellberg at (703) 409-1614 or email at [email protected] for more information. Position 45-43.70N 121-31.35W USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-98CE40PAN PANGeneral / Naval Activity / Naval Testing (Surface / Underwater) The Naval Undersea Warfare Center (NUWC) at Keyport, WA is continuing operations in vicinity of NUWC between University Point, the Brownsville Marina and Keyport through 23 Dec 2026. Operations will normally be conducted Monday through Friday during daylight hours. Operations will involve semisubmersible and submersible vehicles escorted by a small naval craft with a flashing red light. The small craft will monitor VHF-FM channels 12 and 16. The call sign for the small craft will be “Keyport Range Control”. All craft transiting the area are requested to exercise caution and maintain a sharp lookout for possible semi-submerged vehicles while the range is in operation. Questions can be directed to Keyport Range Control on VHF-FM channels 12 and 16 or by contacting the Pacific Northwest Range Management and Ops Division, Range Control Branch, at (360) 396-2313. USCG Northwest District Local Notice to Mariners 45/2026
- PUGET SOUND - POSSESSION SOUND General / Marine Events / Regatta (Race) 26 SEP -21 NOV 2026, 1200-1530 biweekly. Annual series of sailing regattas in Possession Sound beginning near Snohomish River Light 5, proceeding counterclockwise around Possession Sound via Tulalip Bay Light 2, Camano Head Light 1, South along Whidbey Island to Possession Point Lighted Bell Buoy 1, and North along the shore of Mukilteo back to start. USCG Northwest District Local Notice to Mariners 45/2026
- ADMIRALTY INLET - HOOD CANAL General / Miscellaneous The University of Washington, in coordination with the US Navy, has deployed two environmental research buoys in approximate positions (North Buoy 47-41.53N 122-51.90W) (South Buoy 47-40.60N 122-48.60W) in Hood Canal at the entrance to Dabob Bay. These buoys are yellow in color and lighted with a yellow flashing light, FL Y (5) 20s. These buoys will remain in place for one year until 01 Sep 2027. For more information on this buoy, contact the Navy Range Control at (360) 396-2313. Position 47-39.90N 122-52.43W USCG Northwest District Local Notice to Mariners 45/2026
- STRAIT OF JUAN DE FUCA - ADMIRALTY INLET General / Miscellaneous MSIB 004-26 Quiet Sound Voluntary Slowdown https://www.pacificarea.uscg.mil/Our-Organization/Northwest-District/District-Staff/dp/dpw/notices/ The Quiet Sound voluntary commercial vessel slowdown in Admiralty Inlet aims to reduce underwater noise in Southern Resident killer whale critical habitat. The 2025-26 slowdown will be in effect starting at 0001 PST on 3 September 2026 and will remain in effect 24 hours per day until 2359 PST on 31 January 2027, at the latest, depending on orca presence. More information can be found at: https://quietsound.org/admiralty-inlet-slowdown. When in effect, the slowdown requests all inbound and outbound commercial vessels transiting through the slowdown zone not exceed the following speeds through water when safe and operationally feasible: 11 knots – General cargo, bulkers and tankers 14.5 knots – Vehicle carriers, cruise ships, and container vessels The voluntary vessel slowdown takes place in the inbound and outbound lanes of the shipping lanes within these boundaries: Northwest: a line drawn from Pt Hudson (48-07.04N 122-44.93W) to Admiralty Head (48-09.25N 122-40.77W) Northeast: a line drawn from Randall Pt (47-58.99N 122-21.17W) to Mukilteo Light (47-56.89N 122-18.48W) South: a line drawn from Apple Cove Pt (47-48-55.926N, 122-28.51.186W) to Edwards Pt (47-48.20N 122-23.70W) Speed transition zones are in place about 5 nautical miles prior to entering the slowdown area. Any directions from Puget Sound Vessel Traffic Service take precedence and supersede these measures. The voluntary slowdown is led by the Quiet Sound program at Maritime Blue, in cooperation with government agencies, tribal governments, industry partners and conservation groups. For more detailed information related to this slowdown and the Quiet Sound program, including a graphic of the voluntary slowdown area, refer to the following web address: https://quietsound.org/admiralty-inlet-slowdown. USCG Northwest District Local Notice to Mariners 45/2026
- LNM13-8E5291SÉCURITÉPOSSESSION SOUND - SNOHOMISH RIVER General / Marine Construction (Excluding Bridges) / Dredging American Construction Company will be conducting dredging operations in the Snohomish River in Everett, WA (RM 50+00 to 120+50) from 16 Oct 2026 through 14 Feb 2027. Work includes maintenance dredging of approximately 203,000 CY, operating 24-hours per day, seven days a week until completion. Working vessels include a clamshell dredge, M/V Patriot and M/V Mukilteo to dredge and load the split-hull scows. The scows will be towed to the DNR Port Gardner Disposal site. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. Working vessels will be monitoring VHF-FM channels 13 and 16. For additional information, contact Aaron McMahill at (253) 350-1670, [email protected]. USCG Northwest District Local Notice to Mariners 45/2026
- General / Miscellaneous PacWave has deployed and continues to maintain site monitoring equipment throughout the PacWave North wave energy test site, located near Newport, Oregon, approximately 2 nautical miles WNW of Yaquina Head. This equipment supports ongoing environmental monitoring, site characterization, and test site operations. Some of the monitoring buoys are low profile and may be difficult to see in elevated sea states. Surface buoys are deployed as a single-point moorings, have yellow hulls, and are lighted. Mariners should be aware that subsurface equipment and mooring components may also be present. Mariners are requested to avoid the PacWave North test site if possible and to use caution when navigating or operating in or near the area. The test site corner boundaries are as follows: NW (44-41.868N 124-08.772W) NE (44-41.910 N, 124-07.368 W) SE (44-40.914N 124-07.308W) SW (44-40.866N 124-08.706W) Buoys are located at: FLOATr (44-41.832N 124-08.722W) Spotter (44-41.832N 124-08.722W) For additional information, contact [email protected] or 541-737-9023. If there is an emergency or concerns regarding this equipment, please call our 24/7 Watch Desk at 541-819-4096. USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR PUGET SOUND, SUBMERGED LAND ACT (SLA) - STRAIT OF JUAN DE FUCA General / Miscellaneous SMRU Consulting will be testing one acoustic buoy in a location near Haro Strait from 11 Sep – 10 Dec 2026. A yellow, 4-foot in diameter buoy will be located in approximate position 44-38.14N 123-06.18W. The buoy will be monitoring underwater acoustic noise and will be in operation (unmanned) 24 hours a day and marked with a FL Y 6s (flashing yellow six second) light. Mariners are requested to keep a safe distance from the buoy. For additional information, contact Jason Wood at (360) 298-0166 or [email protected]. Position 48-25.13N 123-06.18W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA General / Hazards To Navigation / Obstructions COLUMBIA RIVER - HARRINGTON POINT TO CRIMS ISLAND - WELCH ISLAND – Log obstruction. Mariners are advised that a 30-foot log is fixed in position approximate 46° 12.258' N, 123° 23.392' W. Mariners are advised to exercise caution, keep appropriate distance, and maintain a sharp lookout when transiting the area. Should the log obstruction be removed or is found to be no longer present, mariners are asked to report this finding to the Sector Columbia River Command Center via VHF-FM Channel 16 or telephone at 1-(833) PNW-USCG (769-8724). Position 46-12.25N 123-23.40W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR PUGET SOUND, SUBMERGED LAND ACT (SLA) - QUILLAYUTE RIVER General / Hazards To Navigation / Obstructions There is a large, submerged log stuck in Quillayute River navigational channel approximately 75-100 yards downriver (southwest) of the Quileute Marina entrance. The log may be marked with an orange fender/float. At lower water levels, a portion of the log is visible. Mariners should use extreme caution. Position 47-54.58N 124-38.35W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - COLUMBIA RIVER General / Bridges / Repairs, Painting, Or Fender Replacement WSDOT and Garco Construction will be replacing the deck/roadway on the Vantage I-90 Bridge near Vantage, WA, across the Columbia River at mile 420.0. Construction work will be from March 2, 2026, through November 1, 2027. The work schedule is M-F 0700 – 1730 and may involve evening work. Containment will be installed reducing the main span vertical clearance from 73 feet above high water to 63 feet above high water. The secondary spans will have containment installed as well and the vertical clearances will vary in height above high water. Mariners be aware of fall hazards. Cautionary signs and amber flashing lights will be used to warn mariners of the construction and containment. For more information contact John Rosgen at (509) 254-1026 or [email protected]. Position 46-56.53N 119-58.38W USCG Northwest District Local Notice to Mariners 45/2026
- PUGET SOUND - ELLIOTT BAY General / Miscellaneous The Port of Seattle will deploy hydrophones in Elliott Bay on 16 – 17 Jul 2025 for the purpose of collecting ambient underwater noise data. The hydrophones will be fully submerged and rest on the seafloor, and will be connected to shore stations via an ethernet cable. They will remain in place for two years, through 2027. One location is near Jack Block Park in approximate position 47-35.16N 122-22.10W. The hydrophones will be deployed using Seattle Police boats. For more information on this project, contact Danielle Butsick at (206)-549-2945 or [email protected]. Position 47-35.15N 122-22.10W USCG Northwest District Local Notice to Mariners 45/2026
- PUGET SOUND - ELLIOTT BAY General / Miscellaneous The Port of Seattle will deploy hydrophones in Elliott Bay on 16 – 17 Jul 2025 for the purpose of collecting ambient underwater noise data. The hydrophones will be fully submerged and rest on the seafloor, and will be connected to shore stations via an ethernet cable. They will remain in place for two years, through 2027. One location is near the Seattle Aquarium in approximate position 47-36.43N 122-20.64W. The hydrophones will be deployed using Seattle Police boats. For more information on this project, contact Danielle Butsick at (206)-549-2945 or [email protected]. Position 47-36.43N 122-20.65W USCG Northwest District Local Notice to Mariners 45/2026
- SECTOR COLUMBIA RIVER, SUBMERGED LAND ACT (SLA) - DEPOE BAY General / Bridges / Rehabilitation Oregon Department of Transportation (ODOT) and Carter Construction will be completing a cathodic protection project on the US-101 Bridge (BRDG UID 29514) (LLNR 9627) across the entrance to Depoe Bay, OR. The planned start time/date is 0600 on 5 Jan 2026 through 1800 on 18 Dec 2026. The start and end dates may change due to weather conditions. The work requires the use of containment via scaffolding, that will reduce the vertical navigation clearance of the subject bridge from 46 feet to 41 feet at high tide for the center horizontal 38ft above the main navigation channel. There will also be scaffolding that will hang about 19’ below the bottom of the bridge on the north and south side of the bridge arch of the main navigation channel and will remain in place until maintenance is completed until November / December. The containment will be marked with amber caution lighting and will not obstruct any navigational aids. For more information contact Markus Schaaf at [email protected]. Position 44-48.58N 124-03.70W USCG Northwest District Local Notice to Mariners 45/2026