Lac Desmarchais is a Lake located in Saint-Calixte; Montcalm, Quebec and has an elevation of 287 meters.

• Latitude: 45° 57' 56'' North   (decimal: 45.9655555)
• Longitude: 73° 53' 8'' West   (decimal: -73.8855555)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 287 meters
• Location: Saint-Calixte; Montcalm
• Atlas of Canada Locator Map: Lac Desmarchais
• GPS Coordinate Locator Map: Lac Desmarchais Lat/Long