MCQ Detailed View

The Mackenzie River is located in Canada and is the longest river system in the country. Stretching over 4,200 kilometers when combined with its tributaries, it is also the second-largest river system in North America after the Mississippi-Missouri River system.

The river originates from Great Slave Lake in the Northwest Territories and flows northward into the Arctic Ocean. It drains a vast basin that covers parts of British Columbia, Alberta, Saskatchewan, the Yukon, and the Northwest Territories, making it one of the most important waterways in Canada.

Key Facts about the Mackenzie River:

• Country: Canada


• Length: Approx. 4,241 km (including tributaries)


• Source: Great Slave Lake, Northwest Territories


• Mouth: Arctic Ocean (Beaufort Sea)


• Drainage Basin: Over 1.8 million sq km across multiple provinces and territories


• Significance: Longest river in Canada and major transport & ecological system

In general knowledge and competitive exams, remembering that the Mackenzie River is in Canada is important, as it is a key geographical feature of the Arctic drainage system and a symbol of Canada’s vast northern waterways.