Where is the St. Lawrence Seaway? Quebec or Central Canada?

Question

It seems both answers are correct but what is best, I think it is Quebec.

Answer 1

The St. Lawrence Seaway consists of a series of lakes, rivers, canals, and locks that were established (or already there) to allow shipping traffic to flow from the Atlantic Ocean all the way inland as far as Duluth, MN.

Ships will pass through the province of Quebec, into the province of Ontario, and finally into the Great Lakes region of the seaway, which is controlled by Canada on one side and USA on the other.

If you are measuring the seaway in distances, there is a bout 900 km of the seaway in Quebec (Sept-Iles to Valleyfield), about 500 km is in Ontario (Valleyfield to Hamilton), and most of the rest (2300 km) could be classified as being in USA or Ontario.

But since both countries agreed to share the seaway usage, I would like to think that it has a special status, like co-ownership or being in "international" waters.

If you asked me where the seaway is located, I would tell you to draw a line starting from Newfoundland down to Cleveland, OH, then another from Cleveland to Thunder Bay, ON.

If you asked me who owned it, I'd say Canada and USA. I would not pick a province or state.

Answer 2

The St. Lawrence Seaway is the common name for a system of canals that permits ocean-going vessels to travel from the Atlantic Ocean to the Great Lakes, as far as Lake Superior. Legally it extends from Montreal to Lake Erie, including the Welland Canal and the Great Lakes Waterway. The seaway is named after the Saint Lawrence River, which it follows from Lake Ontario to the Atlantic Ocean.

Any more questions?

Answer 3

Ontario and New York.  The Thousand Island area