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

• Latitude: 50° 55' 34'' North   (decimal: 50.9261111)
• Longitude: 67° 28' 54'' West   (decimal: -67.4816667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Lac Alwin
• GPS Coordinate Locator Map: Lac Alwin Lat/Long