A Thermal Power Plant was being constructed near Gandhidham, Gujarat, by the client. A raw water reservoir has been constructed with a storage capacity of 50,000 m3 to stockpile and ensure a constant water supply. It is lined with a 250-micron geomembrane to render the bottom and side slopes impervious. The geomembrane lined slopes required protection from external damage and uplift pressures. Conventionally, a plain cement concrete lining is placed above the geomembranes. However, due to the weight of concrete tiles or green concrete, the liner tends to slide down and collect at the toe, rendering the system inadequate.