Lac Duminy is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 424 meters.

• Latitude: 48° 59' 12'' North   (decimal: 48.9866667)
• Longitude: 74° 3' 56'' West   (decimal: -74.0655556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 424 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Duminy
• GPS Coordinate Locator Map: Lac Duminy Lat/Long