Northern Alberta is a geographic region located in the Canadian province of Alberta. An informally defined cultural region, the boundaries of Northern Alberta are not fixed. Under some schemes, the region encompasses everything north of the centre of the Calgary–Edmonton Corridor, including most of the province's landmass as well as its capital, Edmonton. Other schemes place Edmonton and its surrounding farmland in Central Alberta, limiting Northern Alberta to the northern half of the province, where forestry, oil, and gas are the dominant industries. Its primary industry is oil and gas, with large heavy oil reserves being exploited at the Athabasca oil sands and Wabasca area in the east of the region. Natural gas is extracted in Peace region and Chinchaga-Rainbow areas in the west, and forestry and logging are also developed in the boreal forests of this region. As of 2011, the region had a population of approximately 386,000. Geography Various definitions exist of Northern Alberta's boundaries. The definition used by the Northern Alberta Development Council, an agency of the provincial government, includes the communities of Whitecourt, Athabasca, Saddle Lake, St. Paul, and Cold Lake, while excluding Hinton, Edson, Mayerthorpe, and Westlock. This definition is also used by the University of Alberta to define eligibility for northern research grants. The region consists of aspen parkland in the south, grading to boreal forest and muskeg in the north. The southwest of the region is part of the Peace Country, an area that stretches into northeastern British Columbia consisting of fertile prairie, ranchland, and farmland along the Peace River and its tributaries. Northern Alberta is crossed by the Peace River and the Athabasca River, both of which eventually convene to form the Slave River that ultimately drains into the Arctic Ocean via Great Slave Lake and the Mackenzie River within the Northwest Territories. Other major rivers are Wapiti, Smoky, Hay, Chinchaga, Petitot Rivers in the west, Wabasca River in the center and Firebag and Clearwater River in the east. Alberta's two largest waterbodies, Lake Athabasca and Lake Claire are located in the wetlands of northeastern Alberta, forming the Peace-Athabasca Delta, that drains through the Slave River towards the Arctic Ocean. The Caribou Mountains are an elevated plateau in the relatively flat Albertan north which provide core habitat for an endangered woodland caribou herd. This area is conserved by the Caribou Mountains Wildland Park. The adjacent Wood Buffalo National Park is Canada's largest