Lac Trois Milles is a Lake located in Gros-Mécatina; Basse-Côte-Nord, Quebec and has an elevation of 62 meters.

• Latitude: 51° 6' 20'' North   (decimal: 51.1056171)
• Longitude: 58° 57' 12'' West   (decimal: -58.9532829)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 62 meters
• Location: Gros-Mécatina; Basse-Côte-Nord
• Atlas of Canada Locator Map: Lac Trois Milles
• GPS Coordinate Locator Map: Lac Trois Milles Lat/Long