Lacs à William-Harrisson is a Lake located in Ruisseau-Ferguson; Avignon, Quebec.

• Latitude: 47° 57' 22'' North   (decimal: 47.9561111)
• Longitude: 67° 26' 15'' West   (decimal: -67.4375)
• Topography Feature Category: Lake
• Geographical Feature: Lacs
• Canadian Province/Territory: Quebec
• Location: Ruisseau-Ferguson; Avignon
• Atlas of Canada Locator Map: Lacs à William-Harrisson
• GPS Coordinate Locator Map: Lacs à William-Harrisson Lat/Long