Ilısu Dam | |
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Model of the dam
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Location of Ilısu Dam in Turkey
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Official name | Ilısu Baraji |
Country | Turkey |
Location | Dargeçit, Mardin Province, Turkey |
Coordinates | 37°31′52.20″N 41°50′58.75″E / 37.5311667°N 41.8496528°ECoordinates: 37°31′52.20″N 41°50′58.75″E / 37.5311667°N 41.8496528°E |
Purpose | Power Flood control Irrigation |
Status | Under construction |
Construction began | August 5, 2006 |
Opening date | 2017 (est.) |
Construction cost | US$1.7 billion |
Owner(s) | State Hydraulic Works |
Dam and spillways | |
Type of dam | Embankment, concrete-face rock-fill |
Impounds | Tigris |
Height (thalweg) | 135 m (443 ft) |
Length | 1,820 m (5,971 ft) |
Elevation at crest | 530 m (1,739 ft) |
Width (crest) | 15 m (49 ft) |
Width (base) | 610 m (2,001 ft) |
Dam volume | 43,800,000 m3 (35,509 acre·ft) |
Spillway type | Service overflow, controlled-chute |
Spillway capacity | 18,000 m3/s (635,664 cu ft/s) |
Reservoir | |
Creates | Ilısu Reservoir |
Total capacity | 10,410,000,000 m3 (8,440,000 acre·ft) |
Active capacity | 7,460,000,000 m3 (6,050,000 acre·ft) |
Inactive capacity | 2,950,000,000 m3 (2,390,000 acre·ft) |
Catchment area | 35,517 km2 (13,713 sq mi) |
Surface area | 313 km2 (121 sq mi) |
Max. length | 244 km (152 mi) (combined) |
Max. water depth | 126.8 m (416 ft) |
Normal elevation | 525 m (1,722 ft) |
Power station | |
Commission date | 2017 (est.) |
Hydraulic head | 122.6 m (402 ft) (gross) |
Turbines | 6 x 200 MW Francis-type |
Installed capacity | 1,200 MW |
Annual generation | 3,833 GWh (est.) |
Website ilisuprojesi |
The Ilısu Dam (Turkish pronunciation: [ɯɫɯˈsu]) is a concrete-face rock-fill dam under construction on the Tigris near the village of Ilısu and along the border of Mardin and Şırnak Provinces in Turkey. It is one of the 22 dams of the Southeastern Anatolia Project and its purpose is hydroelectric power production, flood control and water storage. When complete, the dam will support a 1,200 MW power station and will form a 10.4 billion m3 reservoir. Construction of the dam began in 2006 and it is expected to be complete by 2016. As part of the project, the much smaller Cizre Dam is to be constructed downstream for irrigation and power. The dam has drawn international controversy, because it will flood portions of ancient Hasankeyf and necessitate the relocation of people living in the region. Because of this, the dam lost international funding in 2008. Kurdish militants have also attacked infrastructure associated with the dam which has led to construction delays.
The Ilısu Dam will be a 135 m (443 ft) high and 1,820 m (5,971 ft) wide rock-fill embankment dam with a structural volume of 43,900,000 m3 (35,590 acre·ft). It will be 15 m (49 ft) wide at its crest and 610 m (2,001 ft) wide at its base. The dam will have an overflow spillway on its right bank which will be controlled by eight radial gates which will pour into four chutes before the water reaches a plunge pool. Its power station will be above ground and will contain 6 x 200 MW Francis turbine-generators with an expected annual generation of 3,833 GWh and gross hydraulic head of 122.6 m (402 ft). The dam's reservoir will have a capacity of 10,400,000,000 m3 (8,431,417 acre·ft), of which 7,460,000,000 m3 (6,050,000 acre·ft) will be active (or live, useful) storage and 2,950,000,000 m3 (2,390,000 acre·ft) will be inactive (dead) storage. At a normal elevation of 525 m (1,722 ft) above sea level, the reservoir surface area will cover 313 km2 (121 sq mi).