The Daryan Dam, also spelled Darian (Persian: سد داریان), is an embankment dam constructed on the Sirvan River just north of Daryan in Paveh County, Kermanshah province, Iran. The primary purpose of the dam is to supply up to 1,378,000,000 m3 (1,117,000 acre⋅ft) of water annually to the 48 km (30 mi) long Nowsud Water Conveyance Tunnel where it will irrigate areas of Southwestern Iran. The dam also has a 210 MW hydroelectric power station. Construction on the dam began in 2009 and the dam began to fill its reservoir in late November 2015. The Darian Dam Archaeological Salvage Program (DDASP) was planned by Iranian Center for Archaeological Research before flooding the reservoir. As a result, a number of important archaeological sites were discovered and some were excavated. The power station was commissioned in 2018.[2] The dam's diversion tunnel was completed in June 2011.[3] The dam was designed by Stucky of France and consultation was provided by Mahab Ghodss, International Consulting Engineering Co. In August 2010 Farab Co. won the contract to build the power station.[4][5][6] In 2011, workers on the project held a protest against unpaid wages.[7] The dam is also the subject of protest due to the forced relocations and ecological/cultural impact its reservoir will have.[8]
| Daryan Dam | |
|---|---|
 | |
  Location of Daryan Dam in Iran | |
| Country | Iran |
| Location | Daryan, Kermanshah Province |
| Coordinates | 35°09′07.89″N 46°18′29.81″E / 35.1521917°N 46.3082806°E |
| Purpose | Irrigation, Power |
| Status | Under construction |
| Construction began | 2009 |
| Opening date | 2018 |
| Owner(s) | Iran Water and Power Resources Development Co |
| Dam and spillways | |
| Type of dam | Embankment, rock-fill with clay-core |
| Impounds | Sirvan River |
| Height (foundation) | 169 m (554 ft) |
| Height (thalweg) | 146 m (479 ft) |
| Length | 368 m (1,207 ft) |
| Dam volume | 9,700,000 m3 (7,864 acre⋅ft) |
| Reservoir | |
| Total capacity | 316,300,000 m3 (256,429 acre⋅ft) |
| Active capacity | 281,000,000 m3 (227,810 acre⋅ft) |
| Surface area | 10 km2 (4 sq mi) |
| Maximum width | 800 m (2,625 ft)[1] |
| Power Station | |
| Commission date | 2018 |
| Turbines | 3 x 70 MW Francis-type |
| Installed capacity | 210 MW |
Reduction in the Storage Capacity of the dam
editThe Darian Dam project was planned through studies to have a reservoir volume of one billion cubic meters, But in order to preserve the village of Hajij, respect the religious beliefs of the people, and preserve the historical monuments of the region, especially Imamzade Obaidullah Hajij, the height of the Darian Dam was reduced by 50 meters.[9]
One of the goals of building the Darian Dam was to reduce the inequality in the water consumption of the Sirwan and Diyala River in Iraq and Iran. In Iraq, the Diyala Weir and several large reservoir dams with a total reservoir volume of 5071 million cubic meters have been built on this river. The decrease in the reservoir volume of the Darian dam in Iran caused the total reservoir volume of Iran's dams on this river to reach 440 million cubic meters, which is much less than the water consumption on the Iraqi side of this dam.[10]
Another problem caused by the reduction in the volume of the Sirvan Dam is the reduction of the water flow of the Sirvan River in the downstream areas during the dry seasons, which occurs with the increase in the water demand of the Sirvan River in the upstream.[11]
See also
editReferences
edit- ^ "تونل انحراف آب سد داریان پاوه افتتاح شد" [Water diversion tunnel barrier ' Darian 'opened DA]. The Islamic Republic News Agency (IRNA) (in Persian). 13 July 2011. x3fydy. Retrieved 2024-11-23.
- ^ "Inauguration of First and Second Units of Daryan Hydro Power Plant in Presence of Minister of Energy – Farab". Farab. Retrieved 21 August 2020.
- ^ "Diversion Tunnel for Darian Dam Open" (in Persian). Khaber Farsi. 2010. Retrieved 17 May 2013.
- ^ "Technical News" (PDF). Stucky. 2005. Archived from the original (PDF) on 31 October 2007. Retrieved 17 May 2013.
- ^ "Daryan H.E.P.P." Farab. Archived from the original on 9 January 2015. Retrieved 17 May 2013.
- ^ "FARAB won the tender of Darian 210MW power plant". Farab Co. 30 August 2010. Archived from the original on 29 June 2013. Retrieved 17 May 2013.
- ^ "Workers Protest and Withdraw From Darian Dam" (in Persian). Rojhelat TV. 4 March 2011. Archived from the original on 15 June 2013. Retrieved 17 May 2013.
- ^ "Darian dam construction on the river Sirwan". Isdle. 2009. Archived from the original on 11 September 2012. Retrieved 17 May 2013.
- ^ "ارتفاع سد داریان 50 متر کاهش یافت". Iranian Students' News Agency (ISNA). 11 September 2014. xdxrhG. Retrieved 2024-04-16.
- ^ وﻟﺪاﻧﻲ, اﺻﻐﺮ ﺟﻌﻔﺮي (Spring–Summer 2009) [ﺑﻬﺎرو ﺗﺎﺑﺴﺘﺎن1388]. "استفاده از منابع آب رودهاي مرزي ايران و عراق و حقوق بين الملل" (PDF). پژوﻫﺶ ﺣﻘﻮق و ﺳﻴﺎﺳﺖ. 11 (26).
- ^ روزنامه آفتاب یزد: اعتراض عراق به کاهش جریان آب از ایران. پیشخوان روزنامه ها. روزنامه آفتاب یزد . 8 September 2021. Retrieved 2024-04-16.
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