Lac Erwin is a Lake located in Baie-James; Jamésie, Quebec and has an elevation of 373 meters.

• Latitude: 49° 42' 53'' North   (decimal: 49.7147222)
• Longitude: 74° 37' 24'' West   (decimal: -74.6233333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 373 meters
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Erwin
• GPS Coordinate Locator Map: Lac Erwin Lat/Long