Out of the 3 basins , 1. Godavari 2. Krishna and 3. Pennar, the Tungabhadra basin will enter in Andhra Pradesh in Kurnool district through Mahaboobnagar District of Telangana.  The main tributary of Krishna is Tungabhadra flowing from Karnataka to Andhra Pradesh by entering in Kurnool district near Meliganur.  Approximately excluding Tungabhadra Dam assistance, on an average  155 TMC of Tungabhadra water( 20 years flows taken to calculate average) is flowing  through Sunkesula Reservoir towards Srisailam dam. Last year, nearly 296 TMC of water surplussed through Sunkesula Reservoir  and flown to Srisailam.  Very interesting matter is, the contributed  water of Tungabhadra itself will be sufficient to Srisailam Reservoir (full reservoir capacity  of 215.00 TMC) excluding Krishna Water at a time.

Goto Main Topic