Lac Saint-Pierre is a Lake located in Saint-Pierre-de-la-Rivière-du-Sud; Montmagny, Quebec and has an elevation of 304 meters.

• Latitude: 46° 50' 22'' North   (decimal: 46.8394443)
• Longitude: 70° 33' 27'' West   (decimal: -70.5574999)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 304 meters
• Location: Saint-Pierre-de-la-Rivière-du-Sud; Montmagny
• Atlas of Canada Locator Map: Lac Saint-Pierre
• GPS Coordinate Locator Map: Lac Saint-Pierre Lat/Long