Total Employment


Total Business Revenue


Total Taxes Paid



Quebec Relies on Great Lakes-Seaway Shipping

Quebec is the gateway to the Great Lakes-Seaway system. The St. Lawrence River acts as a valuable connection to Ontario and U.S. markets farther west. More than 56 million tons of Great Lakes-Seaway cargo is handled at Quebec ports.

Mining companies depend on the Great Lakes-Seaway system to transport iron ore from mines in Quebec and Labrador to steel mills in Ontario, Indiana, Ohio, and Michigan. Major refineries use ships to move petroleum products from Sarnia and Nanticoke, Ontario, to the Port of Montreal and Sept-Iles. A major refinery in Quebec City also ships products through the Seaway to Ontario markets. The international Port of Montreal and the Port of Quebec act as transshipment hubs for grain and other bulk cargoes that are transferred from Great Lakes ships to larger ocean carriers.

Economic Impacts (In 2018 USD)

JobsPersonal IncomeBusiness RevenueLocal PurchasesTotal Taxes Paid
19,757$778 million$1.4 billion$512.8 million$471.5 million

Investments (In 2013 USD)

Invested in Quebec port, terminal and waterway infrastructure
$1.2 billion

Quebec Port Activity

PortMajor Cargoes Handled
Côte-Ste-CatherineSalt, gypsum, potash
MontréalGrain, liquid bulk
Port CartierIron ore, grain
QuebecGrain, coal, concentrates, liquid bulk
Sept-ÎlesIron ore, general cargo
ValleyfieldSalt, liquid bulk

Economic Impacts of Maritime Shipping in the Great Lakes-St. Lawrence Region, Martin Associates (July 2018)
Note: Figures exclude impacts created by international maritime commerce at St. Lawrence River ports in Quebec, where cargo does not transit the St. Lawrence Seaway lock system to and from the upper lakes
Infrastructure Investment Survey of the Great Lakes and St. Lawrence Seaway System, Martin Associates (January 2015)

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