Lac Numéro Un is a Lake located in L'Ascension; Antoine-Labelle, Quebec and has an elevation of 404 meters.

• Latitude: 46° 36' 4'' North   (decimal: 46.6011615)
• Longitude: 74° 55' 41'' West   (decimal: -74.9279630)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 404 meters
• Location: L'Ascension; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Numéro Un
• GPS Coordinate Locator Map: Lac Numéro Un Lat/Long