Information about the infrastructures and water structures of the Historical period in the Lorestan region is very limited and incomplete. So far, there has not been much research and archeological study about such structures in Lorestan. This research will introduce a series of new-found water structures in the Kohdasht district in Lorestan province. This complex is located in the village of Rashid Abad/Tang-e Veraz northeast of Kohdasht plain and includes a dam, channels, ponds and a mill. The introduction and study of these structures will help to increase our knowledge of the development of water agriculture and its requirements in the highlands of central Zagros. In this essay, along with the introduction of Tang-e Veraz water structures, based on the archaeological evidence from field visits, the chronology and function of these structures will be analyzed. The main question of the research is: What period do the water structures of Tange-e Veraz belong to? What has been the function of the Tang-e Veraz water structures? The findings have been collected through field visits and analyzed with a comparative approach. During the field visits to Veraz Valley, a series of water structures were identified, including a dam, channels, pond, and mill. These structures are formed around a historical area, much of which is buried under Rashid Abad village. Studying the surface data of the site (pottery and architecture) shows that it belongs to the Sassanid period. The technical principles of construction of the dam are also very similar to the well-known dams of the Sassanid period. Examining the position of the dam and the canals concerning the site shows the continuity and connection of the structures with this historical site in terms of chronology and functionality.