Murwani dam
| Murwani dam | |||
|---|---|---|---|
|
|
|||
|
|||
| Coordinates | 22 ° 10 '46 " N , 39 ° 34' 7" E | ||
| Data on the structure | |||
| Construction time: | 2004 to 2010 | ||
| Height above foundation level : | 102 m | ||
| Height of the structure crown: | 251 m | ||
| Building volume: | 6 million m³ | ||
| Crown length: | 1,012 m | ||
| Data on the reservoir | |||
| Total storage space : | 150 million m³ | ||
The Murwani Dam ( Arabic سد وادي المرواني, DMG Sadd Wādī Murwanī ) is located in Wadi Murwani in the province of Mecca , Saudi Arabia . The city of Jeddah is about 80 km southwest of the dam, the King Abdullah Economic City about 50 km northwest.
The contract to build the dam was awarded to the Turkish construction company Yüksel İnşaat Saudia in mid-2004 . The construction work was completed by April 2010.
The dam is primarily used for flood protection, as in this area there can be rare but devastating flash floods (see Floods in Jeddah 2009 ). In addition, one would like to use the rainwater for the drinking water supply and possibly for the supply of a groundwater reservoir.
Barrier structure
The barrier structure consists of three parts: a dam with a crown length of 575 m on the right side, a flood relief in the middle and another dam with a crown length of 437 m on the left side. The two dams have an asphalt core to ensure tightness. A total of 27,500 m³ (or 80,000 t) of asphalt was required for this.
The top of the dam is at a height of 251 m above sea level . The height of the right dam is 102 (or 91 or 101) m above the foundation level , its volume is 5.35 million m³. The values for the left dam are 30 m high or a volume of 0.65 million m³.
Reservoir
The reservoir can store up to 150 million m³ of water. The annual inflow into the reservoir is estimated at 31 million m³, of which about half is to be used in a plant for drinking water production, which is located below the dam. The plant should be able to process 40,000 m³ of water per day.
Since the evaporation of reservoirs in wadis can be up to 80% per year and in the case of the Murwani reservoir it is estimated at up to 6 m per year, there are considerations to transfer part of the water stored in the reservoir into an aquifer .
Others
The contract value for the project was SAR 263 million . The Murwani dam is part of a project by the Saudi government, which intends to build a total of five dams with an order value of around SAR 1 billion.
See also
Individual evidence
- ↑ a b c M. Ghazanfar Ali Khan: Dam Contract Awarded to Turkish Firm. Arab news, August 26, 2004, accessed on February 3, 2015 (English).
- ↑ a b Murwani Dam. www.yuksel.net, accessed on February 3, 2015 (English).
- ↑ a b c O Lopez, G Stenchikov, TM Missimer: Water management during climate change using aquifer storage and recovery of stormwater in a dunefield in western Saudi Arabia. (PDF 813 KB pp. 1–7) iopscience.iop.org, accessed on February 3, 2015 (English).
- ↑ a b Murwani asphalt core dams - Saudi Arabia. (No longer available online.) Veidekke ASA, archived from the original on February 4, 2015 ; accessed on February 3, 2015 .
- ^ Dam business keeps Yuksel busy. Gulf Construction, September 1, 2004, accessed February 4, 2015 .