First and Second Phase Studies of the Construction of the Gorgak Storage Dam ... Project name: First and Second Phase Studies of the Construction of the Gorgak Storage Dam and its Downstream Irrigation and Drainage Network Status Completed Registration Date 2018/09/29 Update Date 2019/11/27 Manager Chaharmahal and Bakhtiari Regional Water Company Goals Storing the surplus of the Gorgak River during the wet season to meet agricultural water demands during the dry season; Developing orchards and transition from rain-fed to irrigated agriculture in the farmlands; Developing farmlands and constructing an irrigation and drainage network at the downstream; Improving farmlands fed by old canals; Schedule 1st and 2nd Phase Studies Executive Actions Type of the dam: Embankment dam with a clay core Engineering specifications: Height from foundation: 85 m; length of crest: 403 m; open-channel, broad-crested spillway with a capacity of 5.3 cu.m/s on the left side of the reservoir; Catchment basin area: 7 sq. km Average annual flow: 7 million cu. m from the Darreh Sir basin, 15.2 million cu. m from the Asadabad basin, and 0.7 million cu. m from the Darreh Bad basin. Method of irrigation in farms: Semi-portable sprinkler irrigation system; Method of irrigation in orchards: Drip irrigation Area under drip irrigation: 550 hectares (gross) Area under sprinkler irrigation: 2210 hectares (gross) The length of the main line of the distribution network in four construction units; 21 km Type of the main pipeline: GRP and PE; Main pipeline diameter: 200–1400 mm Length of the transmission line: 5340 m; Transmission line diameter: 1400 mm Geography Location 15 km East of Shahr-e-Kord, Iran