The major seaway in Canada is the St. Lawrence Seaway. It is a system of rivers, locks, canals, and channels in Eastern Canada and the Northern United States that allows oceangoing vessels to travel from the Atlantic Ocean to the Great Lakes of North America. The seaway extends from Montreal, Quebec, to Lake Erie, including the Welland Canal, and enables ships to reach all five Great Lakes ports. This crucial waterway is vital for Ontario grain exports and many other commodities, playing a significant role in Canada's trade and economy.
