Lac Rivier is a Lake located in Rivière-Koksoak; Kativik, Quebec.

• Latitude: 59° 19' 7'' North   (decimal: 59.3185557)
• Longitude: 71° 51' 52'' West   (decimal: -71.8643610)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Rivier
• GPS Coordinate Locator Map: Lac Rivier Lat/Long