Lac Dorothy is a Lake located in Lac-Pythonga; La Vallée-de-la-Gatineau, Quebec and has an elevation of 405 meters.

• Latitude: 47° 19' 40'' North   (decimal: 47.3277778)
• Longitude: 76° 10' 49'' West   (decimal: -76.1802778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 405 meters
• Location: Lac-Pythonga; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac Dorothy
• GPS Coordinate Locator Map: Lac Dorothy Lat/Long