Highlights the contribution of India in the field of water management and hydraulic engineering between c.600 BCE and CE 1200. The book is divided into ten chapters, with interesting information for the lay readers and the experts alike. The techniques of search for underground water and mechanical water contrivances have discussed in two appendices. The ancient people of India recognised the importance of water as the very basis of all life on the earth. They had developed various techniques and methods in the field of water harvesting and management since the early times. Numerous kinds of water storage systems, the expertise displayed by craftsmen in construction and the solidity of the structures speak of an enduring technology, eminently suited to its environment. India`s contribution in this field is relevant even today in the 21st century, when the availability of water is in great danger due to pollution of various kinds.