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Slave River

geography Maturity 7-9 Next article →

The Slave River is a significant waterway located in Canada. It serves as a vital link between several major geographic features. The river begins in northeastern Alberta at the Peace-Athabasca Delta. This delta is the point where the Peace River and the Athabasca River meet. From this starting point, the river flows northward into the Northwest Territories. It eventually empties into Great Slave Lake, north of Fort Resolution. The water from this system continues its journey through the Mackenzie River. Ultimately, the water reaches the Arctic Ocean.

Slave River NT 1900
Slave River NT 1900

The name of the river has deep historical roots. It is believed to derive from the Slavey group of the Dene First Nations. In Athabaskan languages, this group is known as the Deh Gah Gotʼine. History shows that the Chipewyan people once displaced other native people from this specific region. Understanding these names helps us connect the river to the Indigenous peoples of the land. The river remains a central feature of the landscape in both Alberta and the Northwest Territories.

One of the most striking features of the Slave River is its intense water movement. The river is characterized by huge volumes of water and massive waves. It contains four distinct sets of named rapids. These are the Pelican, Rapids of the Drowned, Mountain Portage, and Cassette rapids. Navigators rank these rapids using the International Scale of River Difficulty. This scale ranges from Class I to Class VI. Because of these features, the river is a well-known destination for whitewater kayaking.

Fort Smith Nashornpelikane 1 98-07-01
Fort Smith Nashornpelikane 1 98-07-01

The river also provides a critical habitat for wildlife. It is home to the northernmost river pelican colony in North America. These are American white pelicans that nest on islands within the river. To protect these birds, the islands are closed to all human traffic for part of the year. This sanctuary period lasts from April 15 to September 15. This seasonal protection ensures the birds can live and breed without human interference.

Fort Smith Nashornpelikane 1 98-07-01
Fort Smith Nashornpelikane 1 98-07-01

Navigating the Slave River has been dangerous throughout history. The Rapids of the Drowned are specifically noted for their risks. In the fall of 1786, an expedition led by Cuthbert Grant faced tragedy here. Two canoes, five men, and several packages were lost at these rapids. The five men who perished were voyageurs named Brisbois, Joseph Derry, Landrieffe, Ledoux, and Scavoyard. This event serves as a historical reminder of the river's power. Even though the rapids are ranked between Class II and Class IV, they have proven fatal.

Before modern railways reached Hay River, the river was a primary transport route. Cargo shipment was essential for moving goods through the region. In the late 19th century, people used locally built wooden vessels to navigate the water. As technology changed, more complex methods were required to move heavy cargo. For example, tractors were imported from Germany to assist with transport around the rapids. This shows how different technologies were used to overcome the river's natural obstacles.

Slave River NT 1900
Slave River NT 1900

The logistics of moving large ships were quite complex. The Northern Transportation Company operated a fleet called the "Radium Line." These tugs and barges were actually constructed in the south. Because they could not pass the rapids, they had to be disassembled. The parts were shipped by rail to Waterways, Alberta. From there, they were moved by barge to the portage area. After being moved past the rapids, the parts were reassembled. This allowed the vessels to navigate the rest of the extensive Mackenzie River basin.

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File:Fort Smith Nashornpelikane 1 98-07-01.jpg
Fort Smith Nashornpelikane 1 98-07-01.jpg
File:Slave River NT 1900.jpg
Slave River NT 1900.jpg
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