The under-construction multi-purpose Polavaram irrigation project construction works have been permitted for two more years by Environment ministry.
It is being constructed on the Godavari River in the West Godavari District and East Godavari District in Andhra Pradesh.
Its reservoir spreads into parts of Chhattisgarh and Odisha States also.
It was declared a National project in 2014.
It is expected to irrigate nearly 3 lakh hectares, generate hydel power with installed capacity of 960 MW and provide drinking water to 25 lakh populations.