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

• Latitude: 55° 9' 0'' North   (decimal: 55.1500896)
• Longitude: 68° 1' 46'' West   (decimal: -68.0295592)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Grousset
• GPS Coordinate Locator Map: Lac Grousset Lat/Long