Île de la Grosse Roche is a Island located in Saint-Sylvère; Bécancour, Quebec and has an elevation of 58 meters.

• Latitude: 46° 11' 47'' North   (decimal: 46.1964169)
• Longitude: 72° 12' 58'' West   (decimal: -72.2162149)
• Topography Feature Category: Island
• Geographical Feature: Île / Ile
• Canadian Province/Territory: Quebec
• Elevation: 58 meters
• Location: Saint-Sylvère; Bécancour
• Atlas of Canada Locator Map: Île de la Grosse Roche
• GPS Coordinate Locator Map: Île de la Grosse Roche Lat/Long