What is the longest river system in Canada, flowing through the Northwest Territories into the Arctic Ocean?
Answer and explanation
Correct answer: D. Mackenzie River
- Step 1: The Mackenzie River system spans approximately 4,241 kilometers (2,635 miles) from the source of the Finlay River to the Beaufort Sea.
- Step 2: It drains an enormous, pristine subarctic boreal watershed of nearly 1.8 million square kilometers.
Answer
Mackenzie River
Why not the others: 'Yukon River' flows across Yukon and Alaska into the Bering Sea; 'Saskatchewan River' flows eastward into Lake Winnipeg; 'Fraser River' is the longest river in British Columbia, flowing into the Pacific at Vancouver.
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