Some 55 years ago, the American Justin Courtney started his studies on the Sivand Dam and according to those studies the site of the dam had to be at this point. In 1988, the Seko Engineering Company was tasked with completing Courtney’s studies that took until 1994. Work on the dam’s diversion tunnel and the dam itself began in 1991 and 1994 respectively. The construction of the dam continued during the seventh, eighth and ninth governments and now the dam’s reservoir is due to be filled.
In an elaborate look it can be said that the concerns about the filling of the Sivand Dam reservoir have all now been overcome. Some of the concerns were about the drowning of the Pasargard and Ciruse(koorosh) the Great’s tomb. Considering the distance between the dam and the tomb the Sivand Dam reservoir needs 35 billion cubic metres of water to reach the tomb. This is whilst it will only store 92 million cubic metres of water. The distance between the dam’s final filling point and Kurush’s tomb is 7.5 km ,therefore, Kurush’s tomb and Pasargard will never be drowned. The second concern was about the subterranean waters and the fact that the filling of the dam reservoir would result in the rise of these waters which were under Kurush’s Tomb. This is whilst there is a 35 metre height difference between the dam’s filling point and Kurush’s Tomb. The third concern was about the region’s humidity and the fact that the filling of the Sivand dam’s reservoir and the evaporation of its water will result in an increase in the region’s humidity. And this will cause damage to Cirus the Great’s Tomb and Pasargard. The Ministry of Energy has installed sophisticated equipment near Pasargard to monitor the region’s humidity.
Currently, the region’s precipitation level is 400-450 mm. If the Sivand Dam’s reservoir causes a rise in the region’s humidity , the authorities will do the best to avoid any damage to Pasargard.

Dam name: Sivand (Sibuyeh)
River: Sivand
Dam location: North Marvdasht (Fars Province) and 14 km from Sa’adat Shahr
Nearest city: Marvdasht
Main river basin: Markazi
Auxiliary river basin: Bakhtegan-Maharlu
Dam type: Free
(Construction years) start date 1994, completion date: 2006
Crest length: 600 metres (m)
Width of crest: 10 m
Foundation width: 311 m
Height from foundation: 57 m
Height from river bed: 52 m
Volume of used construction material: 3500000
Discharge chamber capacity (cubic metres per second): 5600 (P.M.F)
Reservoir’s maximum capacity (cubic metres): 255 million
Reservoir’s water regulation capacity (cubic metres): 142 million
Area under vegetation (hectares): 10700

Reporter : mehdi akbarsefat

َApproved by : Story Id 28

Create date : 10 May 2008 15:27

Id : 3556

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