Lac à la Tortue is a Lake located in Sainte-Monique; Lac-Saint-Jean-Est, Quebec.

• Latitude: 48° 40' 33'' North   (decimal: 48.6758809)
• Longitude: 71° 58' 33'' West   (decimal: -71.9759498)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Sainte-Monique; Lac-Saint-Jean-Est
• Atlas of Canada Locator Map: Lac à la Tortue
• GPS Coordinate Locator Map: Lac à la Tortue Lat/Long