The Kouhrang 1 Dam is a masonry gravity dam on the Kouhrang River about southwest of Chelgard in Chaharmahal and Bakhtiari Province, Iran. The primary purpose of the dam is to divert up to of water annually via the long Kouhrang 1 Tunnel to the Zayandeh River to the east where it would help supply cities like Isfahan with water. Since the era of Shah Abbas I, attempts had been made to diver the Kouhrang to the Zayandeh. Eventually, efforts by Alexander Gibb between 1948 and 1954 led to the completion of the Kouhrang 1 Dam and Tunnel. Gallery See also Kouhrang 2 Dam – downstream, feeds water into the Kouhrang 2 tunnel Kouhrang 3 Dam – under construction downstream, feeds water into the Kouhrang 3 tunnel References Dams in Chaharmahal and Bakhtiari Province Interbasin transfer Dams completed in 1954 Gravity dams Kuhrang County Masonry dams Tourist attractions in Chaharmahal and Bakhtiari Province 1954 establishments in Iran