Rivière Grande Baie de Piashtibaie is a River located in Baie-Johan-Beetz; Minganie, Quebec.

• Latitude: 50° 17' 11'' North   (decimal: 50.2864618)
• Longitude: 62° 48' 16'' West   (decimal: -62.8045614)
• Topography Feature Category: River
• Geographical Feature: Rivière
• Canadian Province/Territory: Quebec
• Location: Baie-Johan-Beetz; Minganie
• GPS Coordinate Locator Map: Rivière Grande Baie de Piashtibaie Lat/Long