Lac Sec is a Lake located in Belleterre; Témiscamingue, Quebec and has an elevation of 351 meters.

• Latitude: 47° 20' 31'' North   (decimal: 47.3419444)
• Longitude: 78° 36' 1'' West   (decimal: -78.6002778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 351 meters
• Location: Belleterre; Témiscamingue
• Atlas of Canada Locator Map: Lac Sec
• GPS Coordinate Locator Map: Lac Sec Lat/Long