Lac Sumas is a Lake located in L'Ascension; Antoine-Labelle, Quebec and has an elevation of 254 meters.

• Latitude: 46° 31' 9'' North   (decimal: 46.5192144)
• Longitude: 74° 49' 35'' West   (decimal: -74.8262939)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 254 meters
• Location: L'Ascension; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Sumas
• GPS Coordinate Locator Map: Lac Sumas Lat/Long