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Temporary Exhibit Power Outages at Seaway Visitor Center – Facility Remains Open

September 9, 2025

2025 – #31 Longitudinal Hydraulic Assistance Tests at Côte Ste. Catherine Lock

September 4, 2025

2025 – #30 Commissioning Completed – Hands Free Mooring System at Iroquois Lock

August 22, 2025

2025 – #29 Speed Restrictions – MLO Section – Revision #3

August 19, 2025

Great Lakes Seaway Announces Port Winners of 2024 Season “Pacesetter Award”

August 15, 2025

2025 – #13 Maximum Permissible Draft – Montreal to Lake Ontario and Welland Canal

August 12, 2025

2025 – #28 Speed Restrictions – MLO Section – Revision #2

August 12, 2025

2025 – #27 Speed Restrictions – MLO Section Revision #1

August 8, 2025

2025 – #26 Low Water Levels St-Louis Lake (Revised 2025/08/08)

August 5, 2025

2025 – #13 Bridge 11 and Bridge 21 – Maximum Wind Speed

July 25, 2025

2025 – #25 Ships Only Permitted to Use Radar Set on Short Range of Three Nautical Miles or Less at Locks – Revision #1

July 15, 2025

2025 – #24 New Access Procedure at Iroquois Lock

July 14, 2025

2025 – #23 Water Flows Unavailable for Moses-Saunders, Pointe des Cascades, Carillon and Beauharnois

July 2, 2025

2025 – #22 Water Flows Unavailable for Moses-Saunders, Pointe des Cascades, Carillon and Beauharnois

June 30, 2025

2025 – #21 Linehandler Training at MLO and GLS Locks

June 30, 2025

2025 – #20 Brockville Fireworks

June 27, 2025

2025 – #19 Request to Reduce Speed – Copeland Cut

June 26, 2025

2025 – #18 Ships Only Permitted to Use Radar Set on Short Range of Three Nautical Miles or Less at Locks (Revised 2025/07/15)

June 26, 2025

Mike McCoshen Sworn In as New Administrator of the Great Lakes St. Lawrence Seaway Development Corporation

June 25, 2025

2025 – #17 Fireworks at La Ronde – Port of Montreal

June 24, 2025

2025 – #16 Meeting Restrictions for a Deadship Leaving the Port of Montreal

June 20, 2025

2025 – #15 Commissioning of the Hands Free Mooring System at Iroquois Lock

June 6, 2025

Notice of The 2025 Annual Meeting of Members of The St. Lawrence Seaway Management Corporation

June 6, 2025

2025 – #14 Resumption of Deliveries at St. Lambert Lock

June 6, 2025

2025 – #13 Request to Reduce Speed in Sensitive Areas

June 4, 2025

2025 – #12 Linehandler Training at MLO

June 3, 2025

2025 – #12 Precautions when Watering Deck

May 28, 2025

2025 – #11 Parking Directives on Canadian Seaway Property

May 28, 2025

2025 – #11 Water Flows Unavailable for Moses-Saunders, Pointe des Cascades, Carillon and Beauharnois

May 27, 2025

2025 – #10 Water Flows Unavailable for Moses-Saunders, Pointe des Cascades, Carillon and Beauharnois

May 22, 2025