Grand lac du Couteau is a Lake located in Lac-Normand; Mékinac, Quebec and has an elevation of 304 meters.

• Latitude: 46° 51' 30'' North   (decimal: 46.8583333)
• Longitude: 73° 8' 1'' West   (decimal: -73.1336111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 304 meters
• Location: Lac-Normand; Mékinac
• Atlas of Canada Locator Map: Grand lac du Couteau
• GPS Coordinate Locator Map: Grand lac du Couteau Lat/Long