Modifications added to the existing Government Hafir Type using Geomembrane

Abstract

In this research a prototype of a hafir is lined-up with HDPE geomembrane. This lined-up hafir was investigated for the dissipation of water to the bottom and to the sides of the hafir. The main objective of this research was to study the effect of lining-up the hafir on the prevention of water from being dissipated to the bottom and the sides of the hafir. Generally, water should stay in hafirs up to the next rain season. This research succeeded to prevent the water dissipation to bottom and sides of the hafir by lining it up with HDPE geomembrane. This research as well set a solution for the reduction of natural evaporation of water by covering the top surface of the hafir by a thin sheet of HDPE with a reflecting material. Some suggestions are mentioned for treating the water chemically and physically so as to be drinkable for man and animal.