Search for NAVWARNs

Sandbar reported in 72 53.308N 080 31.543W at 121618 UTC Aug 2026. 

Dredging operations taking place daily between 1030 UTC and 2300 UTC at the l’Île-d’Entrée fishing port beginning 13 Aug 2026. Tugs, barges and dump scows on site. Immersion site marked with buoys equipped with a light and radar reflector.

Minimum wake and wide berth requested. 

Lake Nicolet lighted buoy 79 U.S LL 13460 unlit.

USCG Sector Northern Great Lakes Broadcast Notice to Mariners 0133-26 refers.

Unreliable

Unreliable. Displaying incorrect light characteristics. 

Starboard Day Beacon established, mile 836.6, facing downstream, in 67 21.554N 131 51.496W.

Port day beacon facing upstream established at Mile 839.0 located at 67 22.218N 131 57.581W

Missing

Dangerous wreck reported at 43 57.82N 077 39.27W 

Green buoy established at Mile 836.6 located at 67 21.831N 131 51.974W

Green buoy established at Mile 836.9 located at 67 21.709N 131 52.717W

Green buoy established at Mile 837.5 located at 67 21.837N 131 54.238W

Green buoy established at Mile 838.2 located at 67 21.951N 131 55.444W

Red buoy established at Mile 839.0 located at 67 22.066N 131 57.278W

Green Buoy at Mile 836.7 located at 67 21.719N 131 52.303W, permanently removed

Red Buoy at Mile 836.9 located at 67 21.695N 131 52.736W, permanently removed

Green Buoy Mile 837.3 in 67 21.965N 131 54.899W permanently removed

Red Buoy at Mile 837.5 in 67 21.847N 131 54.169W, permanently removed

Green buoy at Mile 838.0 located at  67 21.971N 131 55.018W, permanently removed

Red Buoy at Mile 838.2 located at 67 21.981N 131 55.431W, permanently removed

Red Buoy at Mile 838.7 located at 67 22.099N 131 56.681W, permanently removed

Red buoy at Mile 848.3 located at 67 19.445N 132 16.326W, Permanently Removed

Red buoy at Mile 849.6 located at 67 19.267N 132 19.167W, Permanently Removed

Red buoy at Mile 850.3 located at 67 18.840N 132 20.493W, Permanently Removed

Red buoy established at Mile 847.0 located at 67 19.637N 132 13.489W

Green buoy established at Mile 847.7 located at 67 19.356N 132 14.689W

Red buoy established at Mile 848.2 located at 67 18.989N 132 15.551W

Red buoy established at Mile 848.7 located at 67 18.699N 132 16.605W

Green buoy established at Mile 848.8 located at 67 18.623N 132 17.213W

Green buoy estabblished at Mile 850.1 located at 67 18.418N 132 20.104W

Starboard day beacon mile 851.3 in 67 18.033N 132 21.850W, permanently removed
Port Day beacon mile 849.3 in 67 19.567N 132 18.650W, permanently removed

Beacon Permanently Removed

Permanently relocated to 46 49.994N 064 54.702W

Light Unlit

Light Unlit

Shoal located in area bounded by:

46 03.730N 073 04.714W
46 03.715N 073 04.886W
46 03.723N 073 04.887W
46 03.739N 073 04.716W

Depth: 10.9 metres
In Force Shoals number Q5167/26 refers.

Shoal located in area bounded by:

46 03.683N 073 05.243W
46 03.682N 073 05.245W
46 03.684N 073 05.245W
46 03.684N 073 05.244W

Depth: 11.2 metres
In Force Shoals number Q5166/26 refers.

An unsanctioned marine event is planned for the St. Clair River beginning at 161700 UTC Aug 2026. In the interest of safety, no unauthorized vessels will be permitted in the St. Clair River from the Bluewater Bridge to the upper end of Stag Island during this time. All vessels seeking to manoeuvre within these waters must obtain authorization from the port official prior to entering Canadian waters in the area bounded by Bluewater Bridge to the north, the upper end of Stag Island to the south and the international border to the west.

For urgent vessel transit authorizations on the day of the event only, please contact Sarnia MCTS on VHF channel 16 or at 1-519-337-6221.

The United States Coast Guard has established a temporary safety zone commencing at Lighthouse Beach, Lake Huron and encompassing all U.S. waters to a point on land just north of Stag Island. The safety zone will be in effect from 161600 UTC Aug 2026 until 162200 UTC Aug 2026. The mouth of the Black River, where it enters into the St. Clair River, will be closed to vessel traffic. Entry into, transiting or anchoring within the U.S. safety zone is prohibited unless authorized by the United States Coast Guard Patrol Commander, station Port Huron, which may be contacted on VHF channel 16.

Adjust timing of transit to avoid entering the safety zone during this event.

Sandbar reported in 72 53.308N 080 31.543W at 121618 UTC Aug 2026. 

Dredging operations taking place daily between 1030 UTC and 2300 UTC at the l’Île-d’Entrée fishing port beginning 13 Aug 2026. Tugs, barges and dump scows on site. Immersion site marked with buoys equipped with a light and radar reflector.

Minimum wake and wide berth requested. 

Lake Nicolet lighted buoy 79 U.S LL 13460 unlit.

USCG Sector Northern Great Lakes Broadcast Notice to Mariners 0133-26 refers.

Unreliable

Unreliable. Displaying incorrect light characteristics. 

Starboard Day Beacon established, mile 836.6, facing downstream, in 67 21.554N 131 51.496W.

Port day beacon facing upstream established at Mile 839.0 located at 67 22.218N 131 57.581W

Missing

Dangerous wreck reported at 43 57.82N 077 39.27W 

Green buoy established at Mile 836.6 located at 67 21.831N 131 51.974W

Green buoy established at Mile 836.9 located at 67 21.709N 131 52.717W

Green buoy established at Mile 837.5 located at 67 21.837N 131 54.238W

Green buoy established at Mile 838.2 located at 67 21.951N 131 55.444W

Red buoy established at Mile 839.0 located at 67 22.066N 131 57.278W

Green Buoy at Mile 836.7 located at 67 21.719N 131 52.303W, permanently removed

Red Buoy at Mile 836.9 located at 67 21.695N 131 52.736W, permanently removed

Green Buoy Mile 837.3 in 67 21.965N 131 54.899W permanently removed

Red Buoy at Mile 837.5 in 67 21.847N 131 54.169W, permanently removed

Green buoy at Mile 838.0 located at  67 21.971N 131 55.018W, permanently removed

Red Buoy at Mile 838.2 located at 67 21.981N 131 55.431W, permanently removed

Red Buoy at Mile 838.7 located at 67 22.099N 131 56.681W, permanently removed

Red buoy at Mile 848.3 located at 67 19.445N 132 16.326W, Permanently Removed

Red buoy at Mile 849.6 located at 67 19.267N 132 19.167W, Permanently Removed

Red buoy at Mile 850.3 located at 67 18.840N 132 20.493W, Permanently Removed

Red buoy established at Mile 847.0 located at 67 19.637N 132 13.489W

Green buoy established at Mile 847.7 located at 67 19.356N 132 14.689W

Red buoy established at Mile 848.2 located at 67 18.989N 132 15.551W

Red buoy established at Mile 848.7 located at 67 18.699N 132 16.605W

Green buoy established at Mile 848.8 located at 67 18.623N 132 17.213W

Green buoy estabblished at Mile 850.1 located at 67 18.418N 132 20.104W

Starboard day beacon mile 851.3 in 67 18.033N 132 21.850W, permanently removed
Port Day beacon mile 849.3 in 67 19.567N 132 18.650W, permanently removed

Beacon Permanently Removed

Permanently relocated to 46 49.994N 064 54.702W

Light Unlit

Light Unlit

Shoal located in area bounded by:

46 03.730N 073 04.714W
46 03.715N 073 04.886W
46 03.723N 073 04.887W
46 03.739N 073 04.716W

Depth: 10.9 metres
In Force Shoals number Q5167/26 refers.

Shoal located in area bounded by:

46 03.683N 073 05.243W
46 03.682N 073 05.245W
46 03.684N 073 05.245W
46 03.684N 073 05.244W

Depth: 11.2 metres
In Force Shoals number Q5166/26 refers.

An unsanctioned marine event is planned for the St. Clair River beginning at 161700 UTC Aug 2026. In the interest of safety, no unauthorized vessels will be permitted in the St. Clair River from the Bluewater Bridge to the upper end of Stag Island during this time. All vessels seeking to manoeuvre within these waters must obtain authorization from the port official prior to entering Canadian waters in the area bounded by Bluewater Bridge to the north, the upper end of Stag Island to the south and the international border to the west.

For urgent vessel transit authorizations on the day of the event only, please contact Sarnia MCTS on VHF channel 16 or at 1-519-337-6221.

The United States Coast Guard has established a temporary safety zone commencing at Lighthouse Beach, Lake Huron and encompassing all U.S. waters to a point on land just north of Stag Island. The safety zone will be in effect from 161600 UTC Aug 2026 until 162200 UTC Aug 2026. The mouth of the Black River, where it enters into the St. Clair River, will be closed to vessel traffic. Entry into, transiting or anchoring within the U.S. safety zone is prohibited unless authorized by the United States Coast Guard Patrol Commander, station Port Huron, which may be contacted on VHF channel 16.

Adjust timing of transit to avoid entering the safety zone during this event.