Lac Sec is a Lake located in Biencourt; Témiscouata, Quebec and has an elevation of 244 meters.

• Latitude: 47° 56' 11'' North   (decimal: 47.9363889)
• Longitude: 68° 28' 5'' West   (decimal: -68.4680555)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 244 meters
• Location: Biencourt; Témiscouata
• Atlas of Canada Locator Map: Lac Sec
• GPS Coordinate Locator Map: Lac Sec Lat/Long