Lac Tac is a Lake located in L'Ascension; Antoine-Labelle, Quebec and has an elevation of 478 meters.

• Latitude: 46° 37' 25'' North   (decimal: 46.6236612)
• Longitude: 74° 53' 17'' West   (decimal: -74.8879610)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 478 meters
• Location: L'Ascension; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Tac
• GPS Coordinate Locator Map: Lac Tac Lat/Long