Big-Madame-Gally Cove is a Bay located in Bonne-Espérance; Basse-Côte-Nord, Quebec.

• Latitude: 51° 26' 11'' North   (decimal: 51.4363889)
• Longitude: 57° 34' 0'' West   (decimal: -57.5666667)
• Topography Feature Category: Bay
• Geographical Feature: Anse
• Canadian Province/Territory: Quebec
• Location: Bonne-Espérance; Basse-Côte-Nord
• GPS Coordinate Locator Map: Big-Madame-Gally Cove Lat/Long