description Mackenzie Overview
The Mackenzie is Canada’s longest river system. The Mackenzie River itself flows from Great Slave Lake through the Northwest Territories to the Beaufort Sea, while the full system, measured from distant headwaters, is commonly given as about 4,241 kilometers. Its basin covers a large part of northwestern Canada and includes major tributaries such as the Peace, Athabasca, and Liard.
help Mackenzie FAQ
How long is the Mackenzie River compared with its full river system?
The Mackenzie River's main stem is roughly 1,700 kilometers long from Great Slave Lake to the Arctic coast. Including distant headwaters and tributaries, the full Mackenzie system is commonly given as about 4,241 kilometers.
Where does the Mackenzie River flow?
The Mackenzie leaves Great Slave Lake in Canada's Northwest Territories and flows north to the Beaufort Sea. It forms a large delta near its Arctic outlet.
How large is the Mackenzie River basin?
The Mackenzie basin covers about 1.8 million square kilometers. That is approximately one-fifth of Canada's landmass.
Which rivers belong to the Mackenzie system?
The system includes major tributaries such as the Peace, Athabasca, Liard, and Slave rivers. Their waters pass through lakes including Lake Athabasca and Great Slave Lake before reaching the Mackenzie.
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