WORLD GEOGRAPHY🌍 * Largest river basin in the world: Amazon Basin (60.50 lakh sq km). * The world's largest watershed is: the hil ly region of Central Asia. * The deepest gorge in the world: Kaligandaki or Andhagala gorge (5480 m). * The longest canyon in the world: Ichang Canyon (250 km). * The deepest canyon in the world: El Canon di Calcutta (4375 m). * The largest canyon in the world: Grand Canyon (483 km long, 12 km wide, 1.61 km deep). * The highest waterfall in the world: Salto Angel Falls (989 m). * The widest waterfall in the world: Iguazu (2.6 km). * Longest creek in the world: Ob River creek. * Largest delta island in the world: Ganges - delta island of Brahmaputra. * The world's largest mangrove forest: Sundarbans. * The fastest glacier in the world: Jacobsvan in Greenland (45 meters per day). * Largest continental glacier in the world: Lambert. * The world's largest mountain glacier: Alaska Hubbard. * The world's largest foothill glacier: A