Grand lac Rocher is a Lake located in Lac-Oscar; Antoine-Labelle, Quebec.

• Latitude: 47° 13' 28'' North   (decimal: 47.2244444)
• Longitude: 75° 1' 7'' West   (decimal: -75.0186111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Oscar; Antoine-Labelle
• Atlas of Canada Locator Map: Grand lac Rocher
• GPS Coordinate Locator Map: Grand lac Rocher Lat/Long