Describe the Traditional Rain Water Harvesting "Perch" Method in Boyerahmad Area

In recent decades, extensive research has been carried out to collect and store rain and runoff around the world. In addition to applying different water harvesting methods, and reducing the risk of runoff, other measures such as increasing soil moisture content and cultivation of tree and rangeland species have been studied. There are many water-related environmental problems which, according to researchers, are partly due to the use of new technologies. Part of the body of research focuses on the importance of the indigenous knowledge of water harvesting techniques, and even its integration with new knowledge as a means of sustainable development in this sector. Identifying these traditional methods, which are usually local and consistent with the ecosystem of the region, is the first step towards using them. Since ancient times, different methods have been used for collecting runoff and rainwater in different parts of Iran, in accordance with different climates of Iran. In this paper, one of the native methods of collecting rainwater, known as Perch, used in the past in the mountainous regions of Kohgiluyeh and Boyerahmad province is introduced for the first time.