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Athabasca River

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Photograph:Rapids on the Athabasca River, Alberta
Rapids on the Athabasca River, Alberta
Shostal—EB Inc.

river in northern Alberta, Canada, forming the southernmost part of the Mackenzie River system. From its source in the Columbia Icefield (Canadian Rocky Mountains) near the Continental Divide, the river flows through Jasper National Park, site of the spectacular Athabasca Falls, northeastward across Alberta to its mouth and delta on Lake Athabasca. Its 765-mi (1,231-km) course…



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More from Britannica on "Athabasca River"...
29 Encyclopædia Britannica articles, from the full 32 volume encyclopedia
>Athabasca River
river in northern Alberta, Canada, forming the southernmost part of the Mackenzie River system. From its source in the Columbia Icefield (Canadian Rocky Mountains) near the Continental Divide, the river flows through Jasper National Park, site of the spectacular Athabasca Falls, northeastward across Alberta to its mouth and delta on Lake Athabasca. Its 765-mi (1,231-km) ...
>Athabasca, Lake
lake in Canada, astride the Alberta–Saskatchewan border, just south of the Northwest Territories. The lake, 208 mi (335 km) long by 32 mi wide, has an area of 3,064 sq mi (7,936 sq km) and a maximum depth of 407 ft (124 m). Fed from the southwest by the Peace and Athabasca rivers (the deltas of which have separated it from Lakes Claire and Mamawi), it is drained to the ...
>Mackenzie River
major river system in the drainage pattern of northwestern North America. Its basin is the largest in Canada, and it is exceeded on the continent only by the Mississippi-Missouri system. The Mackenzie system drains an area of some 697,000 square miles (1,805,200 square kilometres), which is almost as large as Mexico. From the headwaters of the Finlay River, which flows ...
>Peace River
river in northern British Columbia and Alberta, Canada, forming the southwestern branch of the Mackenzie River system. From headstreams (the Finlay and the Parsnip rivers) in the Canadian Rockies of British Columbia, the Peace River flows northeastward across the Alberta prairies, receiving its major tributaries (the Smoky and the Wabasca rivers) before joining the Slave ...
>Slave River
river in northern Alberta and southern Northwest Territories, Canada, forming an integral part of the Mackenzie River waterway. Explored by Samuel Hearne in 1771–72, the river was named after the Slave Indians who inhabited its banks. From the confluence of the Peace River and several small streams draining Lake Athabasca, the Slave flows northward for 258 miles (415 km) ...

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14 Student Encyclopedia Britannica articles, specially written for elementary and high school students
Mackenzie River
The Mackenzie River's course runs through northwestern North America for 2,635 miles (4,241 kilometers) from its source in the Rocky Mountains northward to the Arctic Ocean. By gathering the waters of three immense lakes—Lake Athabasca, Great Slave Lake, and Great Bear Lake—it plays a major role in draining the North American continent.
Peace River
A major river of western Canada, the Peace River drains a fertile farm region in northern British Columbia and Alberta. Formed by the union of the Finlay and Parsnip rivers at Finlay Forks, B.C., the river flows eastward into the Rocky Mountains through a gorge 900 feet (274 meters) deep and emerges at Hudson Hope, B.C. East of the mountains it flows northeast across ...
Rivers and Lakes, Climate
   from the Saskatchewan article
Most of Saskatchewan's rivers flow in an eastward direction, their waters eventually reaching Hudson Bay. The North Saskatchewan and South Saskatchewan rivers, which drain the plains and prairie region, rise in the Rocky Mountains in Alberta. They join 30 miles (48 kilometers) east of Prince Albert to form the Saskatchewan River, which empties into Lake Winnipeg in ...
Rivers and Lakes
   from the Canada article
More than 8 percent of Canada's area is covered by water, and this is still the key to the prosperity of the nation. All its major cities and towns are located on a main river or lake.
Interior Plains
   from the Alberta article
Most of Alberta lies in the Interior Plains. This region extends into the United States, where it is known as the Great Plains. The Interior Plains are divided into three areas that vary in elevation, climate, and natural resources: the Alberta Plain, the Central Parkland, and the Alberta Plateau.

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