Lac Marais is a Lake located in Boileau; Papineau, Quebec and has an elevation of 243 meters.

• Latitude: 45° 56' 28'' North   (decimal: 45.9411571)
• Longitude: 74° 42' 37'' West   (decimal: -74.7101827)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 243 meters
• Location: Boileau; Papineau
• Atlas of Canada Locator Map: Lac Marais
• GPS Coordinate Locator Map: Lac Marais Lat/Long