Lac McDonald is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec.

• Latitude: 49° 10' 25'' North   (decimal: 49.1736111)
• Longitude: 70° 54' 21'' West   (decimal: -70.9058333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac McDonald
• GPS Coordinate Locator Map: Lac McDonald Lat/Long