Mackenzie River is the longest river system in Canada, stretching over 4,200 kilometers from the Great Slave Lake to the Arctic Ocean. This magnificent river has many synonyms that depict its grandeur. Some of the synonyms include Dehcho, Slave River, Mckenzie Watershed, and Athabasca-Mackenzie. Other synonyms also include Liard River, Peel River, and Thelon River. These terms are used to refer to distinct parts of the enormous watercourse that encompasses the Mackenzie River. Whether you use Mackenzie, Dehcho, or Athabasca-Mackenzie, each of these synonyms communicates the strength, beauty, and importance of one of Canada's most important natural resources - the Mackenzie River.