Thippagondanahalli reservoir is formed by building a dam at Thippagondanahalli, at the confluence of Arkavathi and Kumudvathi rivers, a few kilometres away from the Silicon Valley of India, Bengaluru. Built to serve the drinking water needs of Bengaluru city, the dam can impound 3.3 Thousand Million Cubic feet (TMC) of water. It is the largest reservoir in the Arkavathi river basin, in terms of capacity. It is located in the districts of Bengaluru Urban and Bengaluru Rural.
In operation since 1934, the reservoir went from Bengaluru’s water source to Bengaluru’s wastewater sink. The heavily polluted reservoir water has not been used for drinking since 2012. Presently, it is being restored to hold 1.7 TMC of Netravathi river water via the Yettinahole Integrated Drinking Water project