Grand marais de Beauharnois is a Low vegetation located in Beauharnois; Beauharnois-Salaberry, Quebec.

• Latitude: 45° 15' 5'' North   (decimal: 45.2514295)
• Longitude: 73° 56' 38'' West   (decimal: -73.9437704)
• Topography Feature Category: Low vegetation
• Geographical Feature: Marais
• Canadian Province/Territory: Quebec
• Location: Beauharnois; Beauharnois-Salaberry
• Atlas of Canada Locator Map: Grand marais de Beauharnois
• GPS Coordinate Locator Map: Grand marais de Beauharnois Lat/Long