Lac Marsac is a Lake located in Témiscaming; Témiscamingue, Quebec and has an elevation of 267 meters.

• Latitude: 46° 52' 39'' North   (decimal: 46.8775)
• Longitude: 79° 5' 22'' West   (decimal: -79.0894444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 267 meters
• Location: Témiscaming; Témiscamingue
• Atlas of Canada Locator Map: Lac Marsac
• GPS Coordinate Locator Map: Lac Marsac Lat/Long