Grand lac Donat is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec and has an elevation of 310 meters.

• Latitude: 49° 8' 52'' North   (decimal: 49.1477778)
• Longitude: 72° 53' 42'' West   (decimal: -72.895)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 310 meters
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Grand lac Donat
• GPS Coordinate Locator Map: Grand lac Donat Lat/Long