Lac Jayac is a Lake located in La Tuque; Le Haut-Saint-Maurice, Quebec and has an elevation of 390 meters.

• Latitude: 47° 27' 30'' North   (decimal: 47.4583333)
• Longitude: 72° 14' 15'' West   (decimal: -72.2374999)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 390 meters
• Location: La Tuque; Le Haut-Saint-Maurice
• Atlas of Canada Locator Map: Lac Jayac
• GPS Coordinate Locator Map: Lac Jayac Lat/Long