Petit lac Ernest is a Lake located in Sainte-Madeleine-de-la-Rivière-Madeleine; La Haute-Gaspésie, Quebec and has an elevation of 491 meters.

• Latitude: 49° 9' 42'' North   (decimal: 49.1617113)
• Longitude: 65° 28' 9'' West   (decimal: -65.4690872)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 491 meters
• Location: Sainte-Madeleine-de-la-Rivière-Madeleine; La Haute-Gaspésie
• Atlas of Canada Locator Map: Petit lac Ernest
• GPS Coordinate Locator Map: Petit lac Ernest Lat/Long