Lac à la Source is a Lake located in Château-Richer; LaCôte-de-Beaupré, Quebec.

• Latitude: 47° 4' 13'' North   (decimal: 47.0702778)
• Longitude: 71° 5' 43'' West   (decimal: -71.0952778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Château-Richer; LaCôte-de-Beaupré
• Atlas of Canada Locator Map: Lac à la Source
• GPS Coordinate Locator Map: Lac à la Source Lat/Long