Lac sur la Montagne is a Lake located in Lac-Douaire; Antoine-Labelle, Quebec.

• Latitude: 46° 43' 40'' North   (decimal: 46.7278297)
• Longitude: 74° 55' 8'' West   (decimal: -74.9187931)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Douaire; Antoine-Labelle
• Atlas of Canada Locator Map: Lac sur la Montagne
• GPS Coordinate Locator Map: Lac sur la Montagne Lat/Long