Lac Alphonse is a Lake located in Shawinigan; Shawinigan, Quebec and has an elevation of 386 meters.

• Latitude: 46° 45' 43'' North   (decimal: 46.7619745)
• Longitude: 72° 59' 49'' West   (decimal: -72.9970689)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 386 meters
• Location: Shawinigan; Shawinigan
• Atlas of Canada Locator Map: Lac Alphonse
• GPS Coordinate Locator Map: Lac Alphonse Lat/Long