a river in northern Canada. Length, approximately 840 km.

The Coppermine rises in Lake de Gras, flows north through tundra, and falls into Coronation Gulf of the Arctic Ocean. The channel forms a number of broad lakelike areas (Point Lake), rapids, and waterfalls. The Coppermine is fed primarily by snow; floods occur in spring and summer, and the river is covered with ice for six months of the year. The settlement of Coppermine is located at the mouth.