most important tributary of krishna are tungabhadra river, which is itself formed by the tunga river and bhadra river that originate in the western ghats. other tributaries include the koyna river, bhima river (and its tributaries such as the kundali river feeding into the upper bhima river basin), malaprabha river, ghataprabha river, yerla river, warna river, dindi river, musi river and dudhganga river.