Peace River,

Peace River, a large river of Canada, rises in two branches in the Rocky Mountains, in British Columbia, and flows north-east to the outlet of Lake Athabasca, where it joins the Slave River by five widely separate mouths. The delta thus formed is, with that of the Athabasca River, the most fertile part of the country. The river has a length of about 1100 miles, but it is much encumbered with rapids. The Peace River was followed by Sir A. Mackenzie (1755-1820) in his expedition of 1792-93 (cf. his Voyages, 1801).