Sri Lanka though small in size, has a rich and proud tradition and civilization. Our forefathers achieved great engineering feats. According to recorded accounts, most of the early settlers founded villages in the dry zone where the land was generally flat. The ancient rulers were aware of the needs of the people whose main occupation was agriculture. Rice cultivation depended very much on rain which could be abundant in one season and fail in another. These variations in rainfall created an urgent need to store water and manage it properly so as to increase the production of rice. As time passed, our ancestors were able to control waters of streams gifted by nature. Gradually the builders of tanks developed their own technology and proceeded with the construction of giant tanks. Hill streams were tapped and their water fed into giant tanks below, some as large as small harbours.

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