Lac Big-Joe is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 306 meters.

• Latitude: 46° 29' 45'' North   (decimal: 46.4958333)
• Longitude: 76° 54' 24'' West   (decimal: -76.9066667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 306 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Big-Joe
• GPS Coordinate Locator Map: Lac Big-Joe Lat/Long