Lac Allay is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 447 meters.

• Latitude: 48° 49' 27'' North   (decimal: 48.8241667)
• Longitude: 73° 7' 17'' West   (decimal: -73.1213889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 447 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Allay
• GPS Coordinate Locator Map: Lac Allay Lat/Long