At present the initial inflows into Srisailam reservoir are stored excessively without using for power generation…The flood water fills the remaining empty Srisailam reservoir quickly and most of the flood water overflows into downstream NAGARJUNASAGAR reservoir without being used for power generation…The endeavor shall be to fill the Nagarjunasagar reservoir fully with the uniform water released through the power generating units.
The dam was constructed in a deep gorge in the Nallamala Hills in between Kurnool and Mahabubnagar districts, 300 m (980 ft) above sea level. It is 512 m (1,680 ft) long, 145 metres (476 ft) maximum height and has 12 radial crest gates. It has a reservoir of 616 square kilometres (238 sq mi). Project has an estimated live capacity to hold 178.74 Tmcft at its full reservoir level of 885 feet (270 m) MSL…The minimum draw down level (MDDL) of the reservoir is at 705 feet (215 m) MSL from its river sluice gates and corresponding dead storage is 3.42 Tmcft…The left bank underground power station houses 6 × 150 megawatts (200,000 hp) reversible Francis–pump turbines for pumped storage operation (each Turbine can pump 200 cumces ) and the right bank semi under ground power station houses 7 × 110 megawatts (150,000 hp) Francis-turbine generators.