No Cauvery, no borewells, no tankers, leave alone shortage.

Want to know more? Rohan D’Souza of National Institute of Advanced Studies (NIAS), is organising a walk on the banks of the tank at Kudlu village on Sunday.

The Bangalore chapter of Indian National Trust for Art and Cultural Heritage (INTACH) is organising the walk to spread awareness about tank systems that provided water to Bangalore and villages around for centuries. D’Souza, who has researched tank systems in Bangalore, will take the participants along the tank bund and explain the tank systems. He has done a research on the tank systems in Bangalore.

D’Souza said tank system in Bangalore was man-made, largely for the purpose of storing rainwater. A few tanks in Bangalore including Agara tank were constructed as early as the fifth century.

Rainwater in Bangalore flowed through three valleys –– Hebbal, Vrishabhavathi and Koramangala-Challaghatta. Chains of tanks were constructed over the centuries to collect rain water. So intricate was the chain that excess water in the upper tanks would flow those situated below, without any loss of water, nor inundation of land.

During the walk around Kudlu tank, which was constructed in ninth century, D’Souza will also explain how tanks were managed by local communities.

Those interested to take part in the walk can register their names by sending an email to intach.blr@gmail.com.

Entry free is Rs 100. Walk begins at Kudlu (four km from Central Silk Board on Hosur Road) 9 am.