The Saskatchewan River system is the largest in western Canada, including most of southern Alberta and southern Saskatchewan, and crossing into central Manitoba. 1
The North Saskatchewan has been designated a Canadian Heritage River in 1989, for its importance in opening up western Canada. 2 The long west-east course facilitated travel, and was used for exploration, trade, and settlement from 1807 (when the first fur traders crossed the region) to the beginning of the 20th century. The upper course, flowing through Banff National Park, has a valued natural heritage.
North Saskatchewan river has a length of 1,287 km (800 mi), and a drainage area of 122,800 km².3 At its end point at Saskatchewan River Forks it has a mean discharge of 245 m³/s. The yearly discharge at the Alberta/Saskatchewan border is more than 7 billion m³.4
At the junction of the David Thompson Highway (Highway 11), it initially turns northeast for 10 kilometres before switching to a more direct eastern flow for about 30 km. At this point, it turns north where it eventually arrives at Abraham Lake.
At Rocky Mountain House, the river abruptly turns north again for 100 km where it switches east towards Edmonton, Alberta.
In Edmonton, the river passes through the centre of the city in a northeasterly direction and out towards Smoky Lake at which point it quickly changes to the southeast and then more to the east as it makes it way to the Alberta-Saskatchewan boundary.
The river course can be divided into five distinct sections. The first, the eastern slopes of the Rocky Mountains, is the smallest area geographically, although the largest in terms of run-off and contributed water flow. The glaciers and perpetual snows of the mountain peaks feed the river year-round. Mountains, with little vegetation, experience the fasting melting snow cover. The second section of the river comprises the foothills region. The terrain is hilly and rough, with a deeper and more defined valley. This area is well covered with forest and muskeg, and run-off into the river is much more constant and stable than in the mountains.
From Edmonton to the mouth of the Vermilion River, the North Saskatchewan flows through the plains-parkland divide, with occasional stretches of prairie. Here the river runs in a well-defined valley with deep cuts in the landscape. The fourth section, from the Vermilion River to Prince Albert is principally prairie with a few small stretches of timber and secondary forest cover. The valley of the river is much wider, and the river itself spreads out across shallow water and flows over many shifting sand bars. Low-lying, flat areas, border the river for much of this section.
The final section of the river, from Prince Albert to the Forks, has many rapids. The valley is more shallow than the previous sections of the river, and the channel is much better defined. There is little prairie and much tree cover in this section.5
Hydroelectric Development
The first hydroelectric development on the North Saskatchewan was planned in 1910 near the town of Drayton Valley. Funding for the plan came from a British Syndicate; design and construction were to be carried out by the Edmonton Hydro-Electric Power Scheme. The development was shelved after the outbreak of World War I.6
One of the North Saskatchewan's major tributaries, the Brazeau River, houses the Brazeau Hydroelectric Dam. The Brazeau Dam is Alberta's largest hydroelectric facility, and was built in 1965 by Transalta.8
^Surveys of the North Saskatchewan River: 1910-1915. Edmonton: Government of the Province of Alberta, Department of Water Resources, 1917. Pages 50-53.
^ Loosmore, W. S. B. To Trail's End: Early Settlement in Drayton Valley. Drayton Valley: Drayton Valley and District Historical Society, 1994. Pages 10-14.