Murwani Dam
Murwani Dam is a rock-fill embankment dam crossing wadi Murwani in Makkah Region, Saudi Arabia. It is located about 100 km northeast of Jeddah.
| Murwani Dam | |
|---|---|
  Location of Murwani Dam in Saudi Arabia | |
| Location | Makkah Region, Saudi Arabia |
| Coordinates | 22.179477°N 39.568709°E |
| Purpose | Flood control |
| Status | Operational |
| Construction began | 2004 |
| Opening date | 2010 |
| Dam and spillways | |
| Type of dam | Rock-fill embankment dam |
| Impounds | Wadi Murwani |
| Height (foundation) | 102 m (335 ft) |
| Length | 1,012 m (3,320 ft) |
| Elevation at crest | 251 m (823 ft) |
| Dam volume | 6,000,000 m3 (210,000,000 cu ft) |
| Spillway type | Over the dam |
| Reservoir | |
| Total capacity | 150,000,000 m3 (120,000 acre⋅ft) |
The 263 mio. SR contract to build the dam was awarded to Yuksel Insaat Saudia Co Ltd., a subsidiary of the Turkish company Yüksel Holding AŞ.[1] Work on the dam began in 2004. The dam was completed in April 2010.[2]
Main purpose of the dam is flood control,[2] because of flash floods, which occur occasionally in the region (see also 2009 Jeddah floods).
Dam
Murwani Dam is a 102 (91[2] or 101[1]) m tall (height above foundation) and 1,012 m long rock-fill embankment dam with a crest altitude of 251 m. The volume of the dam is 6,000,000 m³. The main dam on the right side has a length of 575 m (height 102 m), the saddle dam on the left of 437 m (height 30 m).[3] The dam features a spillway, which is located between the two dams. Impermeability was achieved by using an asphalt-core,[2] for which 80,000 tons of asphalt were used.[3]
Reservoir
At full reservoir level the reservoir of the dam has a total capacity of 150 mio. m³. The estimated annual contribution into the reservoir is 31 mio. m³; about half of this water will be used at a downstream drinking water treatment plant for potable use. The remaining water will be stored in an aquifer or will be lost to free-surface evaporation.[4]
External links
- "Khulais Dam, Marwani Valley". Wikimapia. Retrieved 2016-01-13.
References
- M. Ghazanfar Ali Khan (2004-08-26). "Dam Contract Awarded to Turkish Firm". Arab News. Retrieved 2016-01-13.
- "Murwani Dam". www.yuksel.net. Retrieved 2016-01-13.
- "Murwani asphalt core dams - Saudi Arabia". Veidekke ASA. Retrieved 2016-01-13.
- O Lopez; G Stenchikov; T M Missimer. "Water management during climate change using aquifer storage and recovery of stormwater in a dunefield in western Saudi Arabia" (PDF). iopscience.iop.org. p. 7. Retrieved 2015-12-12.