In addition to creating water reservoirs using dams, it is necessary to build smaller, lined reservoirs and lagoons especially nowadays for storage of water in the areas with flat topography and for small scale agricultural or industrial water storage. Some of these lagoons are also used for recreational purposes. Geomembranes are ideal solutions for lining such reservoirs. Fast and easy installation, low cost and reliable performance are main factors that make geosynthetic the leading universal solution. Windavar, with experience of more than 4 million square meters of liners supplied and installed in this field, is a powerful partner for clients who want an economical liner for these kinds of water storage structures.