Lac Sec is a Lake located in Réservoir-Dozois; Vallée-de-l'Or, Quebec and has an elevation of 400 meters.

• Latitude: 47° 23' 26'' North   (decimal: 47.3905556)
• Longitude: 77° 43' 5'' West   (decimal: -77.7180556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 400 meters
• Location: Réservoir-Dozois; Vallée-de-l'Or
• Atlas of Canada Locator Map: Lac Sec
• GPS Coordinate Locator Map: Lac Sec Lat/Long