Soo Locks Steady; Icebreakers Clear Way for Spring Season

The Great Lakes shipping season is moving into high gear as mild temperatures and coordinated icebreaking efforts keep vessel traffic flowing through critical waterways. At the Sault Ste. Marie locks, a steady procession of ships passed through earlier this week, with the U.S. and Canadian Coast Guards maintaining their traditional partnership to keep channels open. The USCG cutter Mackinaw is en route to Midland, Ontario, in an unusual assignment—breaking ice ahead of the CSL self-unloader Thunder Bay's winter departure, underscoring how closely the two nations coordinate on Great Lakes navigation. Toledo welcomed the season's first ocean vessel when the Federal Nakagawa arrived Monday to load grain at the ADM terminal, a symbolic opening of deep-water cargo operations. Meanwhile, ferry services are ramping up as well: the Pelee Islander II began its 2026 schedule on April 1, restoring regular service between Leamington, Ontario, and Pelee Island. On the upper lakes, the Neebish Island ferry is operating on a limited schedule due to lingering ice in the Rock Cut; conditions could force a temporary shutdown if weather turns cold again. Water levels remain favorable for navigation across the system, with Lake Erie notably high at 2.25 feet above Low Water Datum and Lake Ontario at 2.16 feet. Lake Superior sits 0.69 feet above datum at Sault Ste. Marie. A low-pressure system is moving across the region today, bringing moderate wave heights (2–7 feet depending on the lake) and shifting winds, but conditions are expected to settle over the weekend. The spring reopening arrives amid broader questions about the lakes' industrial future. Cleveland-Cliffs recently won federal funding for hydrogen-ready technology at its Middletown blast furnace, a move that raises concerns among environmental advocates about steelmaking's carbon footprint on the watershed that sustains the entire shipping corridor.