zoom_in Click to enlarge

Saint Lawrence

▲ ▼

description Saint Lawrence Overview

The Saint Lawrence River carries water from Lake Ontario toward the Gulf of Saint Lawrence and the Atlantic Ocean. Its navigable route, extending for roughly 1,200 kilometers, links the Great Lakes with the ocean and supports commercial shipping between the interior of North America and overseas ports. Parts of the river also form or follow the international boundary between Canada and the United States.

help Saint Lawrence FAQ

Where does the Saint Lawrence River begin and end?

The Saint Lawrence begins at the outflow of Lake Ontario. It flows east through Canada toward the Gulf of Saint Lawrence and the Atlantic Ocean.

How long is the Great Lakes-Saint Lawrence waterway?

The connected seaway extends roughly 3,700 kilometers from the Atlantic to the Great Lakes. The river itself is the outlet that links Lake Ontario with the Gulf.

Can large ships use the Saint Lawrence Seaway?

Yes, the seaway was built for ocean-going commercial traffic between the Atlantic and the Great Lakes. The system can accommodate vessels up to about 227.7 meters in length on suitable routes.

Which major cities lie along the Saint Lawrence?

Montreal, Trois-Rivières, and Quebec City are major cities on the river corridor. The route supports commercial shipping from the interior of North America to the Atlantic.

swap_horiz

Looking for Saint Lawrence alternatives? Compare top competitors ranked & scored

arrow_forward