Investigation of Water Supply System of Garmoz Valley at Behbahan State Based on Archaeological Studies

Garmoz is one of the less well-known ancient sites in the southwest of Iran, located 13 kilometers south-east of Behbahan city. The eastern valleys and the western plains of this site were the mainstays of the formation of a part of the water supply system and irrigation of the important areas in Downstream areas of the Zidoun and the Hendijjan plains in the Sasanian era. The present study has investigated the irrigation and water supply system to the downstream areas of Gormoz Valley. The purpose of this study is to identify the local and geographical features of Garmoz Valley along with the necessity of creating such a water supply project in the Sassanid era and continuing to pay attention to it in the first centuries of Islam. The question that this paper tries to answer is as follows: How and with what goals was the safe transfer of water from the upper parts of the Khaiyrabad River to the lower points? The nature of aquatic structures is detrimental due to their location in the path of floods as well as riverbeds; It is therefore necessary before the complete destruction of these hydraulic structures; Documented them. The result is that the use of the power of indigenous forces and possibly Roman engineers in the valley of the Garmoz made the water-based water supply system and irrigation, which resulted in the transfer of water behind the dam or weir through channels similar to the Qanat system in the limestone rocks along the river banks to the points The lower was transferred to lower areas of safe and sweet water and prevented the migration of residents to high points and the development of trade and agriculture in the southern parts of Arajan's State. The history of this system was observed in areas of southwestern Iran, including the Daryoun Canal during the Achaemenid period, which is probably a confirmation of the Iranian nature of this irrigation and water supply system. The development of this water supply system in the Sassanid era was completed with the help of local experts and free labor, or at least the cost of Roman captives. This article is the result of combining field research data with citation sources that is presented using the historical descriptive analysis method