Lac des Mille-Vaches is a Lake located in Port-Cartier; Sept-Rivières, Quebec.

• Latitude: 49° 37' 39'' North   (decimal: 49.6275461)
• Longitude: 67° 18' 27'' West   (decimal: -67.3074804)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Port-Cartier; Sept-Rivières
• GPS Coordinate Locator Map: Lac des Mille-Vaches Lat/Long