The Krishna River in the Deccan plateau is the third-longest river in India, after the Ganges and Godavari. It is also the fourth-largest in terms of water inflows and river basin area in India, after the Ganges, Indus and Godavari. The river, also called Krishnaveni, is 1,400 kilometres long and its length in Maharashtra is 282 kilometres. It is a major source of irriā¦The Krishna River in the Deccan plateau is the third-longest river in India, after the Ganges and Godavari. It is also the fourth-largest in terms of water inflows and river basin area in India, after the Ganges, Indus and Godavari. The river, also called Krishnaveni, is 1,400 kilometres long and its length in Maharashtra is 282 kilometres. It is a major source of irrigation in the Indian states of Maharashtra, Karnataka, Telangana and Andhra Pradesh.