Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department             Flash flood mitigation and ...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                                Water ha...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department     Arid and semiarid regions are incr...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department        - Wadi Al-Khoud Dam 2011
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department          - More water from flash flood ...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                                        ...
Sultan Qaboos University            College of Arts & Social Sciences                 Geography Department                ...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department             57°500"E                  5...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                           Climate and h...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department  There are 22 precipitation stations d...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                                        ...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department               Water harvesting using Al...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                                Al Aflag...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                                     Th...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department         57°500"E            58°00"E    ...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                               Results  ...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department     Some places are suitable to build s...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                                    Wadi...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                                    Wadi...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department    Main stream of Wadi Al Khoud
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                                    Conc...
Sultan Qaboos UniversityCollege of Arts & Social Sciences     Geography Department                                       T...
Upcoming SlideShare
Loading in …5
×

youssef Shawky SHERIEF "Flash flood mitigation and water harvesting in wadi al khoud, sultanate of oman" Flash flood mitigation and water harvesting in Wadi Al-Khoud, Sultanate of Oman"

1,033 views
870 views

Published on

Published in: Business, Technology
0 Comments
2 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
1,033
On SlideShare
0
From Embeds
0
Number of Embeds
40
Actions
Shares
0
Downloads
0
Comments
0
Likes
2
Embeds 0
No embeds

No notes for slide

youssef Shawky SHERIEF "Flash flood mitigation and water harvesting in wadi al khoud, sultanate of oman" Flash flood mitigation and water harvesting in Wadi Al-Khoud, Sultanate of Oman"

  1. 1. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Flash flood mitigation and water harvesting in Wadi Al-Khoud, Sultanate of Oman UNCCD 2nd Scientific Conference 9-12 April 2013 - Bonn, Germany Dr. Youssef Shawky Youssef Sherief Physical Geography & Remote Sensing sherief@squ.edu.om
  2. 2. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Water harvesting…..why? For supplying more water in arid and semi arid areas For increasing the groundwater level An active method to improve the quality of groundwater An active method to mitigate the aridity To mitigate flash flood hazards to decrease of Soil degradation One of few methods characterized by low-cost and realizable. An economic way to reduce value of water bills
  3. 3. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department  Arid and semiarid regions are increasingly suffering from water resource shortage as a result of population  Sultanate of Oman is located in an arid zone that is subjected to flash flooding Records show that major flash floods occurred in Oman in 2003, 2005, 2007, 2010, and 2013. Wadi Oday, Wadi Al-Kabir, and Wadi Al-Khoud.  Nevertheless Omans water resources are under increasing pressure. This could soon lead to a several problems for the development.  So, water harvesting could be one of the best methods in solving decreasing water in the area.
  4. 4. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department - Wadi Al-Khoud Dam 2011
  5. 5. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department - More water from flash flood in Wadi Al-Khoud Basin, 2012
  6. 6. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department
  7. 7. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department The study area 57°500"E 58°00"E 58°100"E 58°200"E Wadi network of Wadi Al-Khoud from DEM Stream orders 52°00"E 54°00"E 56°00"E 58°00"E ± 60°00"E  Wadi Al-Khoud is one of the 1 ± 26°00"N 2 Oman sea important drainage basins 24°00"N El- 3 Ba Sohar W tin .H ah ag pla ar in Muscat E. M H ou ag n ta ar Ebri in M s ou 4 nt Nizwa Sur occupying the eastern side of ain s 22°00"N Sh Rabaa Khaly arq 5 iah sand san d s p lain el av 20°00"N Gr 6 nd sa ie Al Hager Mountain in Oman ad W Main channel Arab sea 7 18°00"N Difar Mountains Salalah with a total surface area of 0 50 100 200 16°00"N Km Wadi Mansah Wadi Fanga about 1740 km2 Wadi Al Rak Wadi Samael Wadi El Aaq Wadi bany Rawaha 0 5 10 20 Km
  8. 8. Sultan Qaboos University College of Arts & Social Sciences Geography Department Data and Methods  Outcrop lithology and structure  Climate conditions (temperature, evaporation, and rainfall)  Hydrological settings  Spatial analysis using GIS and remote sensing to extract contour lines with interval 50m.  extract the catchment area, and wadi networks.  Determination the suitable places to construct some Dams 57°500"E 58°00"E 58°100"E 58°200"E 57°500"E 58°00"E 58°100"E 58°200"E 57°500"E 58°00"E 58°100"E 58°200"E 57°500"E 58°00"E 58°100"E 58°200"E Geology of Wadi Al-Khoud Outcrop lithology 23°400"N Alluvial deposits 23°400"N 23°400"N23°400"N Aeolian deposits Khabra deposits Piedmont facies Shelf facies Shelf, slope and basin facies Basin facies Shelf facies Basin, slope and shelf facies Shelf facies 23°300"N 23°300"N 23°300"N23°300"N Alluvial and shelf facies Upper extrusives Intrusives - Peridotite, gabbro Sheeted dyke complex Cumulate and High level gabbro Dunite Tectonized harzburgite metasedimentary rocks Volcanic rocks 23°200"N 23°200"N 23°200"N23°200"N Main Faults 23°100"N 23°100"N 23°100"N23°100"N Km 0 5 10 20
  9. 9. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department 57°500"E 58°00"E 58°100"E 58°200"E Outcrop lithology Geology of Wadi Al-Khoud  Outcrop lithology has been Alluvial deposits Aeolian deposits played an important role to Khabra deposits Piedmont facies harvest rainfall through kind of Shelf facies Shelf, slope and basin facies Basin facies rocks. Shelf facies Basin, slope and shelf facies Shelf facies Alluvial and shelf facies  The igneous and volcanic rocks Upper extrusives Intrusives - Peridotite, gabbro Sheeted dyke complex cover 55%, whereas, Cumulate and High level gabbro Dunite Tectonized harzburgite metamorphic rocks cover 3%, metasedimentary rocks Volcanic rocks sedimentary rocks 16%, and Main Faults recent deposits cover 26%  Structure geology is very important, whereas it helps to increase the ground water storage during rainfall and runoff 0 5 10 Km 20 specially in the main streams of wadis
  10. 10. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Climate and hydrological setting  The climate of Oman is extremely hot and dry most of year.  The mean summer temperature of the study area is 33 C. So, the evaporation and evapotranspiration are mostly more than rainfall which reaches of 197mm/y.  Generally, Flash floods within the hot desert are characterized by high velocity and low duration with sharp peak discharges.  the catastrophic of desert floods is the time of peak discharge which usually is less than one hour, and often the flood comes as a wall of water.  The recent dam is not sufficient to protect the building area and the governorate aims to build another dam to keep the flooding water and protect the infrastructure.
  11. 11. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department  There are 22 precipitation stations distributed over Muscat governorate.  The average annual rainfall in Muscat is around 63mm (Al Khoud station) to 210mm (Jabal Bani Jabir).  In Samail watershed, there are 8 stations for rainfall records. Ghazi Ali Al-Rawas, 2006
  12. 12. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Flood Protection Dams Project will consist of a series of flood retention dams to be built in the upper catchment of Wadi Samael In the first phase of its implementation, a huge flood protection dam is proposed to be built about 7 km upstream of the existing Al Khoud recharge dam, not far from the Al Khoud Village. Monday, February 14, 2011/Rabee al Awal 10, 1432 AH
  13. 13. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Water harvesting using Al Aflag in Wadi Al Khoud
  14. 14. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Al Aflag in Wadi Al Khoud
  15. 15. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department  There are strong relationship between Wadi network density and slopes in Wadi Alkoud.  So, the situation of dams depend mostly on the surface and slopes
  16. 16. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department 57°500"E 58°00"E 58°100"E 58°200"E Wadi network of Wadi Al-Khoud from DEM  It could be constructing Stream orders ± 1 some charging dams 2 3 across the main streams 4 5 which had more Faults to 6 Main channel 7 increase and improve Wadi Mansah groundwater like: Wadi Wadi Fanga Al Rak and Wadi Samael Wadi Al Rak Wadi Samael Wadi El Aaq Wadi bany Rawaha 0 5 10 20 Km
  17. 17. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Results Suggestion sites of dams wadi Latitude longitude Al-Khoud 23°29′4″ 58°6′13″ Fanga 23°23′52″ 58°6′44″ Al Aaq 23°21′32″ 58°6′10″ ! Al-Khoud ( Samael 23°18′34″ 57°56′53″ Al Rak 23°19′14″ 58°12′49″ Fanga ! ( Manah1 23°23′24″ 58°8′27″ ! Manah 1 ( Al Aaq ! ( Manah2 23°18′47″ 58°9′55″ Al Rak Manah 2 ! ( ! Samael ( ! (
  18. 18. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Some places are suitable to build storage and charging dams in Wadi Al Rak
  19. 19. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Wadi Al Aaq
  20. 20. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Wadi Fanga Wadi Samael
  21. 21. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Main stream of Wadi Al Khoud
  22. 22. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Conclusions  Hydrological and climatic settings of Wadi Al-Khoud confirmed that the recent dam is not sufficient to protect the building area behind it and must be constructing series of dams on the main streams of the Wadi Al Khoud.  The advanced GIS and RS techniques, field work, hydrology, geologic and structure settings of study area had cleared the vision to select the best 7 places for construction storage, charging, and protected dams. • Finally, the suggestion site of dams could be helping to mitigate flood hazard and water harvesting which can be used in sustainable development in the region
  23. 23. Sultan Qaboos UniversityCollege of Arts & Social Sciences Geography Department Thanks Dr. Youssef Sherief sherief@squ.edu.om

×