Saint Lawrence Lowlands

region, North America

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July 13, 2026

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The Saint Lawrence Lowlands are a fertile and densely populated region in Quebec, Canada, situated along both sides of the St. Lawrence River. This area was historically inhabited by Indigenous communities and later settled by Europeans, becoming the heart of Quebec's agricultural sector and urban centers.1

The lowlands are part of Quebec's broader physiographic regions, which also include the Appalachian Uplands and the Canadian Shield. The St. Lawrence River itself is a vital waterway in North America, flowing from Lake Ontario into the Atlantic Ocean and forming the Gulf of Saint Lawrence. This region experiences a climate that can range from temperate in the south to subarctic in the north, with significant seasonal variations.1234

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New York
Relief
The St. Lawrence Lowlands extend northeastward from Lake Ontario to the ocean along the boundary with Canada. Within this area are three subdivisions: a flat to gently rolling strip of land along the St. Lawrence River; a range of hills south and east of the plain;…
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The St. Lawrence Lowlands extend northeastward from Lake Ontario to the ocean along the boundary with Canada. Within this area are three subdivisions: a flat to gently rolling strip of land along the St. Lawrence River; a range of hills south and east of the plain;…
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Quebec
Relief, drainage, and soils
…Canada’s main physiographic regions: the St. Lawrence Lowlands, the Appalachian Uplands, and the Canadian Shield (also called the Laurentian Shield). Each region is a storehouse of unique natural and human resources, which accounts for their different settlement and development patterns over the past centuries.
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…Canada’s main physiographic regions: the St. Lawrence Lowlands, the Appalachian Uplands, and the Canadian Shield (also called the Laurentian Shield). Each region is a storehouse of unique natural and human resources, which accounts for their different settlement and development patterns over the past centuries.
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