Gavoshan Water Transfer Tunnel is implemented 38 km south of Sanandaj city and adjacent to Gavoshan reservoir dam on Gavehrood river by Tosse Manabe Ab & Energy Company.
The purpose of this project, which is one of the important projects in the central part of Iran, is important for the transfer of water from the langan to Zayandehrud valley.
This project includes the construction of water supply tunnels, vertical shafts of gates control , and the power plant's tail water canal as well as the bridge between the dam and the control room. It is part of the large project of Karkheh reservoir dam in Khuzestan province.
The Jayzan project is one of the four downstream networks of the Maroon reservoir dam, which was constructed by Tosse Manabe Ab & Energy Company of the two cities of Behbahan and Ramhormoz in Khuzestan province.