Petit lac Barthe is a Lake located in Lac-Douaire; Antoine-Labelle, Quebec.

• Latitude: 46° 51' 20'' North   (decimal: 46.8556101)
• Longitude: 74° 59' 18'' West   (decimal: -74.9882369)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Douaire; Antoine-Labelle
• Atlas of Canada Locator Map: Petit lac Barthe
• GPS Coordinate Locator Map: Petit lac Barthe Lat/Long