Construction of the St. Lawrence Seaway | The Brian Mulroney Institute of Government

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Construction of the St. Lawrence Seaway

This is the official treaty outlining the approval of construction between Canada and the US for the St. Lawrence Seaway.
While proposals for constructing the St. Lawrence Seaway began in the late 1800s, it was not until the 1950s that the International Joint Commission issued an order of approval for joint construction of the dam.
The St. Lawrence Seaway is an extensive system of locks, canals, and channels of waterways connecting and governing the shared waterways between Canada and the United States.
The Great Lakes-St. Lawrence Seaway stretches approximately 3,700 km from the Atlantic Ocean to the head of the Great Lakes, and the St. Lawrence Seaway portion of the system goes from Montreal to the middle of Lake Erie.
Joint infrastructure like the St. Lawrence Seaway helps provide vessel access to Canadian and US ports on the Great Lakes and furthers the Canada-US economic relationship.

Citation

Canada. Treaties. Exchange of Notes Between Canada and the United States of America Concerning the Construction of the St. Lawrence Seaway. 1952. https://www.treaty-accord.gc.ca/text-texte.aspx?id=100431