Nagarjuna Sagar Dam is a masonry dam built across Krishna River in Nagarjuna Sagar, Andhra Pradesh.

It is one of the earliest irrigation and hydro-electric projects in India.

The hydro electric plant has a power generation capacity of 815.6 MW with 8 units.

One of the tallest masonry dams of the world, the Nagarjuna Dam irrigates over 10 lakh acres of land.

It was during the building of this dam, that the ruins of an ancient Buddhist civilization were excavated.

The project transformed the economy of above districts. 52 villages were submersed in water and 24000 people were affected. The relocation of the people was completed by 1967.