Barrage des Martres is a Hydraulic construction located in Lac-Pikauba; Charlevoix, Quebec.

• Latitude: 47° 50' 14'' North   (decimal: 47.8372476)
• Longitude: 70° 37' 24'' West   (decimal: -70.6234126)
• Topography Feature Category: Hydraulic construction
• Geographical Feature: Barrage
• Canadian Province/Territory: Quebec
• Location: Lac-Pikauba; Charlevoix
• Atlas of Canada Locator Map: Barrage des Martres
• GPS Coordinate Locator Map: Barrage des Martres Lat/Long