Lac Topaze is a Lake located in Saint-Alexis-des-Monts; Maskinongé, Quebec and has an elevation of 405 meters.

• Latitude: 46° 47' 47'' North   (decimal: 46.7964227)
• Longitude: 73° 21' 46'' West   (decimal: -73.3629108)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 405 meters
• Location: Saint-Alexis-des-Monts; Maskinongé
• Atlas of Canada Locator Map: Lac Topaze
• GPS Coordinate Locator Map: Lac Topaze Lat/Long