St. Lawrence River Facts: Lesson for Kids

Lesson Transcript
Instructor: Elizabeth Foster

Elizabeth has been involved with tutoring since high school and has a B.A. in Classics.

The St. Lawrence River is a natural boundary separating Canada from the United States. Discover the St. Lawrence River and learn about the animals and habitats it supports and its value as a water highway and source of hydroelectricity. Updated: 01/03/2022

The Saint Lawrence River

When you take a shower, you use about two gallons of water every minute. When you fill up the tub to take a bath, it probably holds around 36 gallons of water.

Now can you imagine a bathtub big enough to hold two million gallons of water?

That's how much water flows out of the St. Lawrence River every single day. That's a lot of water! In this lesson, you'll learn all about the St. Lawrence River and how people use that water.

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  • 0:28 Geographic Facts
  • 1:24 The St. Lawrence Seaway
  • 2:18 Hydropower
  • 2:33 Lesson Summary
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Geographic Facts

The St. Lawrence River connects the Great Lakes to the Atlantic Ocean. Starting from the eastern end of Lake Ontario, it flows out towards the ocean. At the very end, it gets wide and turns into the Gulf of St. Lawrence. If you start at the very western end of Lake Superior, you could swim all the way out to the Atlantic through the great lakes and then the St. Lawrence River.

Starting from Lake Ontario, the St. Lawrence River is almost 750 miles long. If you wanted to drive that distance in a car, you'd have to drive for more than 12 hours straight.

The St. Lawrence River flows close to the border between the United States and Canada. Mostly, Canada is to the north of the river and the US is to the south. But a little bit of Canadian land is also south of the river.

Lots of fish and birds live in the St. Lawrence River. Also, many birds travel through the area when they fly south for the winter and back north for the summer. These birds like to stop by the St. Lawrence River for a quick snack of fish, seaweed, or other plants. It's like a big highway rest stop, but for birds.

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