Barrage Dumouchel is a Hydraulic construction located in Saint-Étienne-de-Beauharnois; Beauharnois-Salaberry, Quebec.

• Latitude: 45° 15' 8'' North   (decimal: 45.2522221)
• Longitude: 73° 54' 40'' West   (decimal: -73.9111111)
• Topography Feature Category: Hydraulic construction
• Geographical Feature: Barrage
• Canadian Province/Territory: Quebec
• Location: Saint-Étienne-de-Beauharnois; Beauharnois-Salaberry
• Atlas of Canada Locator Map: Barrage Dumouchel
• GPS Coordinate Locator Map: Barrage Dumouchel Lat/Long