Mackenzie River Mackenzie River The Mackenzie River (Slavey language: Deh-Cho , "big river" or Inuvialuktun: Kuukpak , "great river"; ) is the longest river system in Canada, and has the second largest drainage basin of any North American river after the Mississippi River. The Mackenzie River flows through a vast, thinly populated region of forest and tundra entirely within the Canadian Northwest Territories, although its many tributaries reach into four other Canadian provinces and territories. The river's main stem is long, flowing north-northwest from Great Slave Lake into the Arctic Ocean, where it forms a large delta at its mouth. Its extensive
Alcovy River Alcovy River The Alcovy River (pronunciation: al-CO-vee) is a tributary of the Ocmulgee River in north-central Georgia in the United States. Via the Ocmulgee River, it is part of the watershed of the Altamaha River, which flows to the Atlantic Ocean. The Alcovy River rises in eastern Gwinnett County, northeast of Lawrenceville, and flows generally south through Walton, Newton and Jasper counties. The river is used to define portions of the boundary between Newton and Jasper counties. It joins the Yellow and South rivers to form the Ocmulgee River as part of Lake Jackson, a reservoir formed by a dam