The St. Lawrence Seaway is a system of rivers, locks, canals, and channels in Eastern Canada and the Northern United States that permits oceangoing vessels to travel from the Atlantic Ocean to the Great Lakes of North America, as far inland as Duluth, Minnesota, at the western end of Lake Superior. The seaway is named for the St. Lawrence River, which flows straight from Lake Ontario to the Atlantic Gulf of St. Lawrence. Legally, the seaway extends from Montreal, Quebec, to Lake Erie, and includes the Welland Canal. Ships from the Atlantic Ocean are able to reach ports in all five of the Great Lakes via the Great Lakes Waterway.
Flooding of Canada's Saint Lawrence Seaway begins.
On July 1, in the year 1958, Flooding of Canada's Saint Lawrence Seaway begins. This event is recorded as a Historical Events event in the history of July 1, one of 534 recorded events on this date across all of history.
Key Facts
- This event took place on July 1, 1958 (AD era).
- It is categorised as a Historical Events event in recorded history.
- Referenced in 1 Wikipedia article.
- Wikipedia source last updated on 16 June 2026.
On This Date in History 534
This article draws on content from Wikipedia, available under CC BY-SA 4.0.
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