Lac Pourpre is a Lake located in Saint-Alexis-des-Monts; Maskinongé, Quebec and has an elevation of 390 meters.

• Latitude: 46° 47' 50'' North   (decimal: 46.7972559)
• Longitude: 73° 20' 49'' West   (decimal: -73.3470771)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 390 meters
• Location: Saint-Alexis-des-Monts; Maskinongé
• Atlas of Canada Locator Map: Lac Pourpre
• GPS Coordinate Locator Map: Lac Pourpre Lat/Long