Some of the British agents have wondered due to view of thousands of tanks in low country dry zone of Sri Lanka. The first topographical survey conducted in 1897 and the first systematic study on small tanks within a limited area in 1923 marked the turning point of studying the unique tank system in the country. After this a lot of researchers and professionals both local and foreign, attempted to explore and analyze these systems. Understanding the strategies, water management techniques and issues, anthropological background, ecological settings, organizational behavior of tanks, as well as the current issues and management approaches, were also analyzed within the past period. In addition to the tank based studies, there were a number of studies in relation to “set of tanks” or “combined group of tanks with its catchments as well as command areas”. This paper identifies the evolution of these study disciplines, as well as relevant study periods on different perspectives in relation to tank cascades.