Lac Rosario is a Lake located in Lac-Walker; Sept-Rivières, Quebec and has an elevation of 253 meters.

• Latitude: 50° 7' 44'' North   (decimal: 50.1289313)
• Longitude: 67° 19' 31'' West   (decimal: -67.3252082)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 253 meters
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Lac Rosario
• GPS Coordinate Locator Map: Lac Rosario Lat/Long