Lac à Alphonse-Tanguay is a Lake located in Sainte-Sabine; Les Etchemins, Quebec.

• Latitude: 46° 30' 44'' North   (decimal: 46.5121999)
• Longitude: 70° 21' 42'' West   (decimal: -70.3616999)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Sainte-Sabine; Les Etchemins
• GPS Coordinate Locator Map: Lac à Alphonse-Tanguay Lat/Long