Lac Desmarais is a Lake located in Sainte-Hedwidge; Le Domaine-du-Roy, Quebec and has an elevation of 400 meters.

• Latitude: 48° 23' 13'' North   (decimal: 48.387)
• Longitude: 72° 30' 43'' West   (decimal: -72.5119444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 400 meters
• Location: Sainte-Hedwidge; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Desmarais
• GPS Coordinate Locator Map: Lac Desmarais Lat/Long