Answer: Govind Ballabh Pant Sagar
Notes: The Sriram Sagar Reservoir, one of India's largest, is on the Godavari River in Telangana. The Nath Sagar Jalashay Reservoir, formed by the Jayakwadi Dam, is located on the Godavari River in Maharashtra. The Idukki Reservoir is on the Periyar River in Kerala. The Govind Ballabh Pant Sagar, the largest artificial lake in India, is situated on the Rihand River in Uttar Pradesh.
