Lac Rias is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 366 meters.

• Latitude: 47° 16' 55'' North   (decimal: 47.2819444)
• Longitude: 77° 27' 51'' West   (decimal: -77.4641667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 366 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Rias
• GPS Coordinate Locator Map: Lac Rias Lat/Long