Lac Desmarais is a Lake located in Lac-Douaire; Antoine-Labelle, Quebec and has an elevation of 533 meters.

• Latitude: 46° 41' 51'' North   (decimal: 46.6975516)
• Longitude: 74° 56' 1'' West   (decimal: -74.9335164)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 533 meters
• Location: Lac-Douaire; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Desmarais
• GPS Coordinate Locator Map: Lac Desmarais Lat/Long