Petit lac Opinaca is a Lake located in Baie-James; Jamésie, Quebec.

• Latitude: 52° 22' 18'' North   (decimal: 52.3717713)
• Longitude: 76° 38' 17'' West   (decimal: -76.6380605)
• Topography Feature Category: Lake
• Geographical Feature: Partie de réservoir
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Petit lac Opinaca
• GPS Coordinate Locator Map: Petit lac Opinaca Lat/Long