Lac Wepaasiu is a Lake located in Baie-James; Jamésie, Quebec.

• Latitude: 52° 14' 41'' North   (decimal: 52.2447222)
• Longitude: 71° 42' 21'' West   (decimal: -71.7058333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac Wepaasiu
• GPS Coordinate Locator Map: Lac Wepaasiu Lat/Long