them off on his fingertips. ‘The Indus river system, the Saraswati river system, the Ganga–Brahmaputra river system, the Narmada river system, the Mahanadi river system, the Godavari–Krishna river system, the Kaveri river system. And then there are many smaller ones, like the Tapti and Penna, which we don’t even count among the seven, but they each carry as much water as the Euphrates River! Even the Mahanadi, which is the smallest of the seven major river systems, often carries as much water as the Nile River!’
