Lac Eugène-Rouillard is a Lake located in Lac-Walker; Sept-Rivières, Quebec.

• Latitude: 50° 42' 43'' North   (decimal: 50.7119444)
• Longitude: 67° 14' 54'' West   (decimal: -67.2483332)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Lac Eugène-Rouillard
• GPS Coordinate Locator Map: Lac Eugène-Rouillard Lat/Long