Big Green Lake is a Lake located in Rapides-des-Joachims; Pontiac, Quebec.

• Latitude: 46° 21' 31'' North   (decimal: 46.3586719)
• Longitude: 77° 44' 45'' West   (decimal: -77.7458634)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rapides-des-Joachims; Pontiac
• GPS Coordinate Locator Map: Big Green Lake Lat/Long