Lac Senac is a Lake located in Petit-Mécatina; Minganie, Quebec and has an elevation of 371 meters.

• Latitude: 51° 53' 23'' North   (decimal: 51.8897718)
• Longitude: 57° 11' 14'' West   (decimal: -57.1871085)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 371 meters
• Location: Petit-Mécatina; Minganie
• Atlas of Canada Locator Map: Lac Senac
• GPS Coordinate Locator Map: Lac Senac Lat/Long