Le Grand Plaqué is a River feature located in Mont-Alexandre; Le Rocher-Percé, Quebec.

• Latitude: 48° 35' 30'' North   (decimal: 48.5917231)
• Longitude: 64° 42' 3'' West   (decimal: -64.7007167)
• Topography Feature Category: River feature
• Geographical Feature: Fosse à saumon
• Canadian Province/Territory: Quebec
• Location: Mont-Alexandre; Le Rocher-Percé
• Atlas of Canada Locator Map: Le Grand Plaqué
• GPS Coordinate Locator Map: Le Grand Plaqué Lat/Long