Origin of the Krishna River :Krishna river originates in the western ghats near Mahabaleshwar at an elevation of about 1,300 meter, in the state of Maharashtra in central India. It is one of the longest rivers in India. The Krishna river is around 1,290 km in length. It flows through the states of Maharashtra, Karnataka and Andhra Pradesh before merging in the Bay of Bengal at Hamasaladeevi in Andhra Pradesh. The principle tributaries of the Krishna River includes Koyna, Bhima, Mallaprabha, Ghataprabha, Yerla, Warna, Dindi, Musi, Tungabhadra and Dudhganga rivers. The river basin is approximately 200 meter deep. Krishna river is the oldest river in India.