Kurnool-Cuddapah canal off-takes from Sunkesula anicut on Tungabhadra River, traverses through Kurnool and Kadapa (Cuddapah) districts and finally terminates at Cuddapah. This canal is connected to the natural streams Nippulavagu, Galeru and Kunderu through controlling structures on these streams viz. Lock-In-Sula, Santajutur anicut and Rajoli anicut respectively.
Irrigation in Kadapa district is through major, medium and minor irrigation projects. There are 4 major, 5 medium completed irrigation projects in the district. The major irrigation projects are 1) Kurnool-Kadapa canal 2) TBP HLC Stage-I, 3) TBP HLC Stage-II (Mylavaram) and 4) Pulivendula Branch canal with a total ayacut of 2,27,896 acres. The five completed medium irrigation projects are 1.Lower Sagilru Project 2) Upper Sagileru Project 3) Pincha Project 4) Buggavanka Project and 5) Annamayya Project with a total ayacut of 55,625 acres.
The T.G.P. now under construction is a diversion scheme from foreshore of N.S.R. Sagar project and is intended to supply 15 TMC of Krishna water to Chennai city for drinking purpose besides creating irrigation Potential of 5,75,000 acres (1.08 Lakhs acres in Kurnool Dist., 1.67 Lakhs acres in Kadapa District utilizing 29 TMC of Krishna Water through Velugodu Balancing Reservoir and S.P.V.B. Reservoir respectively and 0.46 Lakhs acres in Chittoor District and 2.54 Lakh Acres in Nellore District utilizing