Lac Montagnais is a Lake located in Lac-des-Eaux-Mortes; La Mitis, Quebec and has an elevation of 424 meters.

• Latitude: 48° 14' 40'' North   (decimal: 48.2444444)
• Longitude: 67° 57' 53'' West   (decimal: -67.9647222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 424 meters
• Location: Lac-des-Eaux-Mortes; La Mitis
• Atlas of Canada Locator Map: Lac Montagnais
• GPS Coordinate Locator Map: Lac Montagnais Lat/Long