Courchesne is a Unincorporated area located in Saint-Marc-du-Lac-Long; Témiscouata, Quebec and has an elevation of 255 meters.

• Latitude: 47° 22' 30'' North   (decimal: 47.3750231)
• Longitude: 68° 48' 9'' West   (decimal: -68.8025279)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Lieu-dit
• Canadian Province/Territory: Quebec
• Elevation: 255 meters
• Location: Saint-Marc-du-Lac-Long; Témiscouata
• Atlas of Canada Locator Map: Courchesne
• GPS Coordinate Locator Map: Courchesne Lat/Long