Lac Stewart is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 351 meters.

• Latitude: 46° 36' 46'' North   (decimal: 46.6127778)
• Longitude: 76° 54' 5'' West   (decimal: -76.9013889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 351 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Stewart
• GPS Coordinate Locator Map: Lac Stewart Lat/Long