Septième lac Cassian is a Lake located in Stoneham-et-Tewkesbury; La Jacques-Cartier, Quebec.

• Latitude: 47° 13' 21'' North   (decimal: 47.2225)
• Longitude: 71° 28' 7'' West   (decimal: -71.4686111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Stoneham-et-Tewkesbury; La Jacques-Cartier
• GPS Coordinate Locator Map: Septième lac Cassian Lat/Long