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

• Latitude: 49° 21' 19'' North   (decimal: 49.3552778)
• Longitude: 70° 38' 35'' West   (decimal: -70.6430556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Dumb-Bell
• GPS Coordinate Locator Map: Lac Dumb-Bell Lat/Long