Barrage du Grand-Lac is a Hydraulic construction located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec.

• Latitude: 49° 0' 57'' North   (decimal: 49.0158737)
• Longitude: 68° 46' 13'' West   (decimal: -68.7703228)
• Topography Feature Category: Hydraulic construction
• Geographical Feature: Barrage
• Canadian Province/Territory: Quebec
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Barrage du Grand-Lac
• GPS Coordinate Locator Map: Barrage du Grand-Lac Lat/Long