Lac du Grand Ruisseau is a Lake located in Notre-Dame-du-Rosaire; Montmagny, Quebec and has an elevation of 397 meters.

• Latitude: 46° 52' 52'' North   (decimal: 46.8811110)
• Longitude: 70° 26' 34'' West   (decimal: -70.4427777)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 397 meters
• Location: Notre-Dame-du-Rosaire; Montmagny
• Atlas of Canada Locator Map: Lac du Grand Ruisseau
• GPS Coordinate Locator Map: Lac du Grand Ruisseau Lat/Long