Project of Operation Green Reservoir Dam and related facilities for supplying drinking water to Nahavand city and surrounding villages along with supplying the water needed by industries in order to control the flood and prevent its damage and to provide recreational and tourist facilities in the beautiful seafront of Gamasiab in the southeast The city of Nahavand is located about 16 km from the city. The dam is of a pebble type with a clay hill 70 meters high, with a crown length of 336 meters and a width of 8 meters with the surface of the riverside rivers with an area of ۵۳ square kilometers and a reservoir volume of 10 million cubic meters of water. In this project, about 29,000 cubic meters of concrete, 2 million cubic meters of embankment, 3.5 million cubic meters of excavation, 35000 meters of drilling and injection, 950,000 kg of reinforcement, along with the preparation, transportation and installation of hydromechanical equipment and instrumentation, and supply and construction Employer exploitation buildings and access roads and construction of an alternative road of 2 km along with low voltage lines will be implemented.