Lac Six Piastres is a Lake located in Dépôt-Échouani; La Vallée-de-la-Gatineau, Quebec.

• Latitude: 47° 45' 44'' North   (decimal: 47.7622968)
• Longitude: 75° 38' 53'' West   (decimal: -75.6479572)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Dépôt-Échouani; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac Six Piastres
• GPS Coordinate Locator Map: Lac Six Piastres Lat/Long