Lac à l'Arc is a Lake located in Montcerf-Lytton; La Vallée-de-la-Gatineau, Quebec.

• Latitude: 46° 42' 11'' North   (decimal: 46.7030556)
• Longitude: 76° 6' 18'' West   (decimal: -76.105)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Montcerf-Lytton; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac à l'Arc
• GPS Coordinate Locator Map: Lac à l'Arc Lat/Long