St. Lawrence River

Cultural  

1. River flowing northeast from Lake Ontario to the Atlantic Ocean. Ontario and Quebec, Canada, and New York state are along its banks.

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Important trade route. The St. Lawrence Seaway, a system of locks, allows oceangoing ships to pass between the Atlantic and the Great Lakes.

Example Sentences

The port also faces challenges because of its position on the St. Lawrence River, about 1,000 nautical miles from the Atlantic Ocean.

From The Wall Street Journal • Oct. 22, 2025

Advocates have identified 12 wolves south of the St. Lawrence River, a natural obstacle for packs in Canada, since 1993.

From New York Times • Jul. 7, 2023

The Akwesasne reserve straddles both sides of the St. Lawrence River, with land in Ontario and Quebec on the Canadian side, and New York.

From Reuters • Apr. 2, 2023

The bodies were found Wednesday and Thursday near the St. Lawrence River in the Mohawk Territory of Akwesasne in southern Canada.

From Washington Post • Apr. 1, 2023

That was where the Quints were and the St. Lawrence River.

From "The Heart is a Lonely Hunter" by Carson McCullers