Lac Us is a Lake located in Lac-Pythonga; La Vallée-de-la-Gatineau, Quebec and has an elevation of 476 meters.

• Latitude: 47° 23' 20'' North   (decimal: 47.3888889)
• Longitude: 76° 18' 44'' West   (decimal: -76.3122222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 476 meters
• Location: Lac-Pythonga; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac Us
• GPS Coordinate Locator Map: Lac Us Lat/Long