Petit lac Bum is a Lake located in Rivière-aux-Outardes; Manicouagan, Quebec.

• Latitude: 49° 23' 44'' North   (decimal: 49.3956045)
• Longitude: 68° 17' 57'' West   (decimal: -68.2991973)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Petit lac Bum
• GPS Coordinate Locator Map: Petit lac Bum Lat/Long