Lac Emerald is a Lake located in Grenville-sur-la-Rouge; Argenteuil, Quebec.

• Latitude: 45° 45' 33'' North   (decimal: 45.7591999)
• Longitude: 74° 32' 53'' West   (decimal: -74.5481000)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Grenville-sur-la-Rouge; Argenteuil
• GPS Coordinate Locator Map: Lac Emerald Lat/Long