Lac L'Heureux is a Lake located in Saint-Colomban; La Rivière-du-Nord, Quebec.

• Latitude: 45° 43' 40'' North   (decimal: 45.7278000)
• Longitude: 74° 8' 55'' West   (decimal: -74.1485999)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Saint-Colomban; La Rivière-du-Nord
• GPS Coordinate Locator Map: Lac L'Heureux Lat/Long