Lac De Coste is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 304 meters.

• Latitude: 46° 31' 46'' North   (decimal: 46.5295029)
• Longitude: 77° 17' 24'' West   (decimal: -77.2900114)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 304 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac De Coste
• GPS Coordinate Locator Map: Lac De Coste Lat/Long