Lac Derval is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 404 meters.

• Latitude: 49° 26' 17'' North   (decimal: 49.4380556)
• Longitude: 73° 46' 21'' West   (decimal: -73.7724999)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 404 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Derval
• GPS Coordinate Locator Map: Lac Derval Lat/Long