Lac Summerville is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 299 meters.

• Latitude: 46° 8' 39'' North   (decimal: 46.1441667)
• Longitude: 77° 12' 4'' West   (decimal: -77.2011111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 299 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Summerville
• GPS Coordinate Locator Map: Lac Summerville Lat/Long