उकाई बांध, जिसे वल्लभ सागर के नाम से भी जाना जाता है, किस राज्य में स्थित है?

The Nagarjuna Sagar Dam is built across the Krishna River and located on the border between Andhra Pradesh and which of the following states?

Maithon Dam is located on which river?

Rihand Dam, which creates Govind Ballabh Pant Sagar, is located in which state?