Lac Demi-Lune is a Lake located in Cantley; Les Collines-de-l'Outaouais, Quebec and has an elevation of 209 meters.

• Latitude: 45° 35' 20'' North   (decimal: 45.5888889)
• Longitude: 75° 42' 14'' West   (decimal: -75.7038888)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 209 meters
• Location: Cantley; Les Collines-de-l'Outaouais
• Atlas of Canada Locator Map: Lac Demi-Lune
• GPS Coordinate Locator Map: Lac Demi-Lune Lat/Long