Saint Lawrence River

Franklin County, New York.

Saint Lawrence River midpoint in Clayton Lake, Maine.

Saint Lawrence River ends in Van Buren, Maine.

147.03 miles (236.63 sq kilometers)

About The Saint Lawrence River

Saint Lawrence River is a River located in Franklin County, NY. Starting in Cape Vincent, NY the Saint Lawrence River flows 1096 miles through Clayton Lake, ME before ending in Van Buren, ME. Find maps, fishing guides, weather and recreation information at Guidesly.


All About The Saint Lawrence River, NY

The Saint Lawrence River is a large river located in east-central America. It is the second-longest river in Canada, as the river runs for 700 miles and can be divided into three sections with the upstream region containing the Great Lakes. While moving further east, you’ll find the center section of the river ranging from Lake Ontario to Île d’Orléans. Finally, when the river reaches Cabot Strait, the water system widens up and proceeds to empty out into the Atlantic Ocean.

The length of the river makes it so that it receives water from a lot of different water bodies. These sources include Lake Ontario, Lake Superior, Lake St. Claire, and Lake Huron as well as rivers like Niagra, Saint Louis, and Saint Mary. The river also occupies three great geologic locations in North America; the Canadian Shield, Appalachian Mountains, and sedimentary rock platforms. 

The first explorers who discovered the river during the 11th century were the Norse. Fast forward to the 16th century and European explorers led by Jacques Cartier arrived at the then gulf on Saint Lawrence’s feast day, which is why they named it after the saint. From the 16th to the 17th century, the river was an important area for whalers as well as the indigenous tribe who traded with the European whalers.