Premier lac à Rosaire is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec.

• Latitude: 48° 48' 32'' North   (decimal: 48.8088889)
• Longitude: 70° 12' 15'' West   (decimal: -70.2041667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Premier lac à Rosaire
• GPS Coordinate Locator Map: Premier lac à Rosaire Lat/Long