Topic – St. Lawrence Lowlands

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St. Lawrence Lowlands

Map of Canada


The St. Lawrence Lowlands include part of the Ottawa River Valley, Anticosti Island, and part of the southern coast of Québec and Labrador. The region also spans from Georgian Bay south to the Niagara River in Ontario and east along the St. Lawrence River to Québec.

Physical Features

The St. Lawrence Lowlands region has both flat land and some hills. The rivers drain into the five Great Lakes and the St. Lawrence River. The five Great Lakes are Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario. There are islands in the Great Lakes. The plain around the Great Lakes was formed by sand and soil particles, called sediment, that were carried by rivers and streams. The particles settled to the bottom of the water. This formed the deep and fertile soil of the plain.

The Niagara Escarpment is located near the Great Lakes. An escarpment is a long rocky cliff that marks the boundary of a flat or gently sloping upland area. The Niagara River flows over the escarpment at Niagara Falls.

Niagara Falls


For the most part, the St. Lawrence Lowlands have hot and humid summers. Winters are cool and are frequently snowy. The area near the Great Lakes has one of the longest growing seasons in Canada.


• The St. Lawrence Lowlands have mixed forests of coniferous and deciduous trees. Coniferous trees include fir, spruce, and hemlock. Deciduous trees include sugar maple, walnut, and oak.

• The region has very fertile soil and some of the best growing areas in Canada.


• mammals such as white-tailed deer, squirrels, moose, and lynx

• fish such as yellow perch and northern pike

• birds such as bluebirds, blackbirds, loons, and woodpeckers

Natural Resources


• fresh water

• sugar maple trees

• iron ore, zinc, silver, coal, copper, and lead

• fertile soil

• hydroelectricity

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