Lac Éphrem is a Lake located in Sainte-Agathe-des-Monts; Les Laurentides, Quebec and has an elevation of 414 meters.

• Latitude: 46° 5' 31'' North   (decimal: 46.0919444)
• Longitude: 74° 19' 42'' West   (decimal: -74.3283333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 414 meters
• Location: Sainte-Agathe-des-Monts; Les Laurentides
• Atlas of Canada Locator Map: Lac Éphrem
• GPS Coordinate Locator Map: Lac Éphrem Lat/Long