Lac Cassis is a Lake located in Lac-Ashuapmushuan; LeDomaine-du-Roy, Quebec and has an elevation of 540 meters.

• Latitude: 48° 42' 35'' North   (decimal: 48.7097222)
• Longitude: 73° 0' 25'' West   (decimal: -73.0069444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 540 meters
• Location: Lac-Ashuapmushuan; LeDomaine-du-Roy
• Atlas of Canada Locator Map: Lac Cassis
• GPS Coordinate Locator Map: Lac Cassis Lat/Long