Grand lac à Prime is a Lake located in Lac-Pikauba; Charlevoix, Quebec.

• Latitude: 47° 43' 53'' North   (decimal: 47.7313889)
• Longitude: 70° 37' 5'' West   (decimal: -70.6180556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Pikauba; Charlevoix
• GPS Coordinate Locator Map: Grand lac à Prime Lat/Long