La Grande-Écluse is a Unincorporated area located in Saint-Jean-de-Cherbourg; Matane, Quebec.

• Latitude: 48° 49' 15'' North   (decimal: 48.8208786)
• Longitude: 67° 6' 37'' West   (decimal: -67.1102619)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Lieu-dit
• Canadian Province/Territory: Quebec
• Location: Saint-Jean-de-Cherbourg; Matane
• Atlas of Canada Locator Map: La Grande-Écluse
• GPS Coordinate Locator Map: La Grande-Écluse Lat/Long