Lac Marcusen is a Lake located in Senneterre; Vallée-de-l'Or, Quebec.

• Latitude: 47° 41' 24'' North   (decimal: 47.6900793)
• Longitude: 76° 28' 6'' West   (decimal: -76.4682838)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Senneterre; Vallée-de-l'Or
• Atlas of Canada Locator Map: Lac Marcusen
• GPS Coordinate Locator Map: Lac Marcusen Lat/Long