St. Lawrence River: Quick Facts

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Last updated

Nov. 10, 2026

News •

Military recovers unexploded shell along banks of St. Lawrence River • Nov. 8, 2026, 11:43 AM ET (Toronto Star)

A mysterious U.S. army barrel washed ashore in Quebec. Why did it drum up anthrax concerns? • Nov. 6, 2026, 1:03 PM ET (CBC)

Police bomb squad responds to ancient barrel sighted near island in St. Lawrence River • Oct. 27, 2026, 3:00 AM ET (CBC)

Photos

St. Lawrence River

Map showing the St. Lawrence hydrographic system in eastern Canada and the northeastern United States, highlighting the five main sectors of the St. Lawrence Seaway project from the Great Lakes to the Atlantic Ocean. The map labels major cities, waterways, and lock and canal locations along the seaway, illustrating its route from Lake Superior and Lake Michigan through the St. Lawrence River to the Gulf of St. Lawrence.

St. Lawrence Seaway

farmland in the St. Lawrence River valley

Thousand Islands

Map showing the St. Lawrence hydrographic system and the five main sectors of the St. Lawrence Seaway project, stretching from Lake Ontario near Kingston through various locks, canals, and dams along the Canada-United States border to Montreal. The map highlights key locations such as the Thousand Islands, International Rapids, Lake St. Francis, Soulanges, and Lachine sections, with detailed labeling of major locks, canals, and power dams. Cross sections of the lock and canal system are depicted

upper St. Lawrence River

Map showing the routes of Jacques Cartier's first and second voyages to North America in the 1530s. Green arrows trace his 1534 journey, and red arrows trace his 1535-36 journey, both entering the Gulf of Saint Lawrence and traveling along the Saint Lawrence River past locations such as Anticosti Island, the Gaspe Peninsula, Stadacona (Quebec City), and Hochelaga (Montreal). Modern international and provincial boundaries are marked, and the map includes parts of present-day Canada and the northe

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