Coppermine, river, 525 mi (845 km) long, rising in Lac de Gras, Northwest Territories, Canada, and winding northwest to enter the Arctic Ocean at Coronation Gulf in Nunavut Territory. Kugluktuk, formerly Coppermine, a trading post, is at its mouth.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.