Lac à Ti-Slas is a Lake located in Marsoui; La Haute-Gaspésie, Quebec and has an elevation of 740 meters.

• Latitude: 49° 6' 25'' North   (decimal: 49.1069891)
• Longitude: 65° 58' 36'' West   (decimal: -65.9766098)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 740 meters
• Location: Marsoui; La Haute-Gaspésie
• Atlas of Canada Locator Map: Lac à Ti-Slas
• GPS Coordinate Locator Map: Lac à Ti-Slas Lat/Long