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  2. St. Lawrence River - Wikipedia

    en.wikipedia.org/wiki/St._Lawrence_River

    The St. Lawrence River is a large international river in the middle latitudes of North America connecting the Great Lakes to the North Atlantic Ocean. Its waters flow in a northeasterly direction from Lake Ontario to the Gulf of St. Lawrence, traversing Ontario and Quebec in Canada and New York in the United States.

  3. St. Lawrence River - WorldAtlas

    www.worldatlas.com/rivers/st-lawrence-river.html

    The river measures 1,197 kilometers, or 744 miles, and is part of the larger St. Lawrence Seaway which extends some 4,000 kilometers, or 2,500 miles. Map showing the St. Lawrence River and the Great Lakes.

  4. St. Lawrence River - Encyclopedia Britannica

    www.britannica.com/place/Saint-Lawrence-River

    St. Lawrence River, hydrographic system of east-central North America. It starts at the outflow of Lake Ontario and leads into the Atlantic Ocean in the extreme east of Canada, opening much of the interior of the North American continent.

  5. St. Lawrence Seaway | Definition, Locks, & Map | Britannica

    www.britannica.com/topic/Saint-Lawrence-Seaway

    Saint Lawrence Seaway, continuous navigable deep waterway project from the Atlantic Ocean to the Great Lakes, undertaken jointly by Canada and the United States and completed in 1959. Learn about the history, economic importance, and physical characteristics of the seaway.

  6. Seaway Map - Great Lakes St. Lawrence Seaway System

    greatlakes-seaway.com/en/navigating-the-seaway/seaway-map

    Seaway Map . The link to MarineTraffic.com is provided for your convenience. This website is managed by a third party that is not subject to the Official Languages Act.Some content may not be available in French.

  7. St. Lawrence River - ArcGIS StoryMaps

    storymaps.arcgis.com/stories/c6d5df0ab12f4e95b67e71a569079a59

    The St. Lawrence River is one of the longest rivers in North America. And, is the outflow for the entire Great Lakes system. The Great Lakes hold nearly 20% of the world’s fresh water. The River flows 744 miles from Lake Ontario into the world’s largest estuary, the Gulf of St. Lawrence.

  8. St. Lawrence River - Great Lakes Guide

    greatlakes.guide/watersheds/st-lawrence

    One of the largest hydrologic systems in the world, the St. Lawrence River is the third largest in North America, next to the Mississippi and Mackenzie Rivers. Water flows through the westernmost Great Lakes, out of Lake Ontario, and down into the deep trench that is the St. Lawrence River.

  9. St. Lawrence River - The Canadian Encyclopedia

    www.thecanadianencyclopedia.ca/en/article/st-lawrence-river

    The St. Lawrence River is a grand river and estuary, which together with the Great Lakes forms a hydrographic system that penetrates 3,058 km into North America. The river proper, about 1,197 km long, issues from Lake Ontario, flows northeast past Montreal and Quebec City to the Gulf of St. Lawrence.

  10. Saint Lawrence River and Seaway summary | Britannica

    www.britannica.com/summary/Saint-Lawrence-River

    Saint Lawrence River and Seaway, Hydrographic system of east-central North America. It connects the North River (source of the St. Louis River, in the U.S. state of Minnesota, which flows into Lake Superior ) with Cabot Strait, leading into the Atlantic Ocean in the extreme east of Canada, crossing the interior of the North American continent ...

  11. The St. Lawrence River drops 226 feet between Lake Ontario and Montreal, Canada. To allow vessels to pass through the river and in and out of the Great Lakes, the St. Lawrence Seaway, a massive American-Canadian navigational project, was begun in 1954 and completed in 1959.