The paper presents case studies to bring out the experiences of use of relatively thin synthetic membranes for the lining of fresh water ponds, reservoirs and irrigation channels. High cost of synthetic polymers in India, necessiates use of relatively very thin liners as opposed to thick sheet liners used in Europe & U.S. A The paper brings out the problems faced in the use of these thin liners of low tensile, tear and puncture resistance, when used for the barrier function. For small and medium projects in India, optimising the cost oflining is very crucial and thus choice of a lining system to form a perfect barrier becomes a major challenge. The paper addresses this issue and based on actual field experience, suggests various alternative systems for the future applications.
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