Ruisseau Lefort is a River located in Mont-Saint-Grégoire; Le Haut-Richelieu, Quebec.

• Latitude: 45° 19' 23'' North   (decimal: 45.3230961)
• Longitude: 73° 11' 23'' West   (decimal: -73.1898542)
• Topography Feature Category: River
• Geographical Feature: Ruisseau
• Canadian Province/Territory: Quebec
• Location: Mont-Saint-Grégoire; Le Haut-Richelieu
• Atlas of Canada Locator Map: Ruisseau Lefort
• GPS Coordinate Locator Map: Ruisseau Lefort Lat/Long