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 Form 4 Geography online lessons on transport and communication

The Great Lakes and the St. Lawrence sea way and shortcomings of the seaway before development.

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Answer Text:
The Great Lakes and the St. Lawrence Sea Way.
- It’s the most important sea way in N. America shared by U.S.A. and Canada.
- It’s located along the boundary between the two countries.
- It stretches over 3680km from Atlantic Ocean to the interior of N. America up to L. Superior.
- It comprises of St. Lawrence River and the Great Lakes Superior, Michigan, Huron, Erie and Ontario.
Shortcomings of the seaway before development.
(a) It had obstacles of rock outcrops, rapids, waterfalls and small islands.
(b) Shallow sections due to silting
(c) Narrow sections (bottle necks).
(d) Freezing of water in winter.
(e) Presence of fog and mist at the mouth of St. Lawrence River.
- St. Lawrence Sea Way Project was started by U.S.A. and Canadian governments in 1954 to construct and improve navigability of St. Lawrence River.


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