Explanation:

Godavari:
•The Godavari basin is the largest river system in the peninsula and second only to the Ganga system in India.
•It rises in the Nasik district of Maharashtra, and drains and area of 3, 12,812 square kilometres, half of which lies in Maharashtra.
•Besides Maharashtra, the basin is shared by Madhya Pradesh, Karnataka, Orissa and Andhra Pradesh.
•The Godavari flows for a length of 1,465 km and is often referred to as Vridha Ganga or Dakshina Ganga because of its large size and extent.
•The major tributaries of the Godavari are the Pravara, Purna, Manjra, Penganga, Wainganga, Wardha, Pranhita, Indravati, Maner and Sabari.
Krishna:
•The Krishna is the second largest east flowing Peninsular River.
•It rises from a spring near Mahabaleshwar. Its total length of 1,400 km and drainage basin area of 2, 58,948 is shared by Maharashtra (27%), Karnataka (44%) and Andhra Pradesh (29%) states.
•The Koyna, Yerla, Varna, Panchaganga, Dudhganga, Ghatprabha, Malprabha, Bhima, Tungabhadraand Musi are the main tributaries of the Krishna.
•The Tungabhadra consists of the Tunga and Bhadra rivers which originate in the western Karnataka and join just below Shimoga. Similarly the Tungabhadra meets the Krishna river near Kurnool town. It has a total length of 640 km with drainage area of 71,417 sq. km. Another tributary Bhima commands a catchment area of 76,614 sq. km.