Lac à Slas is a Lake located in Sainte-Madeleine-de-la-Rivière-Madeleine; La Haute-Gaspésie, Quebec and has an elevation of 312 meters.

• Latitude: 49° 13' 46'' North   (decimal: 49.2294886)
• Longitude: 65° 23' 48'' West   (decimal: -65.3965838)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 312 meters
• Location: Sainte-Madeleine-de-la-Rivière-Madeleine; La Haute-Gaspésie
• Atlas of Canada Locator Map: Lac à Slas
• GPS Coordinate Locator Map: Lac à Slas Lat/Long