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Najran Valley Dam
The Najran Valley Dam ( ar, سدّ وَادِي نَجْرَان, Sadd Wādī Najrān / Sudd Wādī Najrān) is an arch dam on Wadi Najran about southwest of Najran, in the Najran Province of southwest Saudi Arabia. It has several purpose to include water supply, flood control and groundwater recharge. Its collects run-off and sediment in the wadi and helps release it downstream slowly throughout the year. The dam was completed in 1981, and inaugurated by the Crown Prince of Saudi Arabia Nayef bin Abdulaziz Al Saud in 1982. It is owned by the Ministry of Water and Electricity. See also * List of dams in Saudi Arabia This is a list of dams in Saudi Arabia. As of 2014 there are 482 dams in country across all regions with total capacities of 2.08 Billion cubic meters.Obaid, R. R. (2015)Seasonal-Water Dams: A Great Potential for Hydropower Generation in Saudi Ara ... References External links Najran Valley Dam.wmv( YouTube) Najran dam {{Authority control Dams i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asir Mountains
The Asir Mountains ( ar, جِبَال عَسِيْر, '; (' Difficult')) is a mountainous region in southwestern Saudi Arabia running parallel to the Red Sea. It comprises areas in the Asir Region of Saudi Arabia, however it also generally includes areas near the Yemeni border. The mountains cover approximately and consists of mountains, plains, and valleys of the Arabian highlands. ''Sensu lato'', they are part of the Sarawat Mountains, defining the latter as the mountain range which runs parallel to the Tihamah throughout the western portion of the Arabian Peninsula, particularly the western parts of Saudi Arabia and Yemen. Geology The mountains consist primarily of sedimentary rock, limestone, sandstone and shale, of Jurassic, Cretaceous and Paleogene origin on a Precambrian granitic basement. Climate and agriculture The region has the highest average rainfall of Saudi Arabia due to largely seasonal rain. Average rainfall can range from to over per year, in wet reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crown Prince Of Saudi Arabia
The crown prince of Saudi Arabia is the second-most important position in Saudi Arabia, second to the King, and is his designated successor. Currently, the Crown Prince assumes power with the approval of the Allegiance Council after he is nominated by the King. This system was introduced to the country during the reign of King Abdullah. In the absence of the King, an order is issued to have the Crown Prince manage the affairs of the state until the King's return. History of the crown prince position The last crown prince of the Second Saudi State was Abdulaziz, who lost the title when Abdul Rahman bin Faisal, his father, lost his state after the Rashidis conquered Riyadh in 1890. The Al Sauds went into exile and took refuge in multiple Arab states of the Persian Gulf for nearly a decade. After the defeat at the battle of Sarif in 1900, Abdul Rahman bin Faisal gave up all ambitions to recover his patrimony. Despite this, Abdulaziz and his relatives remained determined to re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arch Dams
An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it. Arches may be synonymous with vaults, but a vault may be distinguished as a continuous arch forming a roof. Arches appeared as early as the 2nd millennium BC in Mesopotamian brick architecture, and their systematic use started with the ancient Romans, who were the first to apply the technique to a wide range of structures. Basic concepts An arch is a pure compression form. It can span a large area by resolving forces into compressive stresses, and thereby eliminating tensile stresses. This is sometimes denominated "arch action". As the forces in the arch are transferred to its base, the arch pushes outward at its base, denominated "thrust". As the rise, i. e. height, of the arch decreases the outward thrust increases. In order to preserve arch action and prevent collapse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams In Saudi Arabia
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Dams were us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is a global online video platform, online video sharing and social media, social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by Google, and is the List of most visited websites, second most visited website, after Google Search. YouTube has more than 2.5 billion monthly users who collectively watch more than one billion hours of videos each day. , videos were being uploaded at a rate of more than 500 hours of content per minute. In October 2006, YouTube was bought by Google for $1.65 billion. Google's ownership of YouTube expanded the site's business model, expanding from generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by YouTube. It also offers YouTube Premium, a paid subscription option for watching content without ads. YouTube also approved creators to participate in Google's Google AdSens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Dams In Saudi Arabia
This is a list of dams in Saudi Arabia. As of 2014 there are 482 dams in country across all regions with total capacities of 2.08 Billion cubic meters.Obaid, R. R. (2015)Seasonal-Water Dams: A Great Potential for Hydropower Generation in Saudi Arabia. ''Int. J. of Sustainable Water and Environmental Systems'', ''7''(1), 1-7. This list includes a part of these dams. Riyadh Region * Al-Alab dam. * Haeer dam. * Hanabej dam. * Hareeq dam. * Helwah dam. * Lasad dam. Mecca Region * Murwani dam. * Wadi Hali dam. * Al-Lith dam. * Wadi Rabigh dam. * Wadi Fatimahdam dam.Chowdhury, S., & Al-Zahrani, M. (2015)Characterizing water resources and trends of sector wise water consumptions in Saudi Arabia.''Journal of King Saud University-Engineering Sciences'', ''27''(1), 68-82. * Arda dam. * Tarba dam. * Laya dam. * Murayfeg dam. * Nawfla dam. * Qrn dam. Madina Region * Qaa hathutha dam. * Fareah dam. * Wadi Alfaraah dam. * Alakool dam. * Malal dam 'Asir Region * King Fahad dam * W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King Saud University
King Saud University (KSU, ar, جامعة الملك سعود) is a public university in Riyadh, Saudi Arabia. Established in 1957 by King Saud bin Abdulaziz to address the country's skilled worker shortage, it is the first university in the Kingdom of Saudi Arabia. The university was known as Riyadh University before a name change in 1982. The student body of KSU today consists of 40,000 male and female students, 7% of which are international. The female students have their own disciplinary panel, and there is a center supervising the progress of female students, either personally by female faculty members or by male faculty members via a closed television network. The university offers courses in the natural sciences, the humanities, and professional studies, and many courses are tuition-free. The medium of instruction in undergraduate programs is English and Arabic depending on the chosen major. Among Arab universities, its medical programs are highly regarded. History Es ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nayef Bin Abdulaziz Al Saud
Nayef bin Abdulaziz Al Saud ( ar, نايف بن عبد العزيز آل سعود, ''Nāyif ibn ‘Abd al ‘Azīz Āl Su‘ūd''; 1934 – 16 June 2012) was the crown prince of Saudi Arabia and deputy prime minister from October 2011 and the minister of interior from October 1975 until his death in June 2012. Early life and education Nayef bin Abdulaziz was born in Ta'if in 1934 to King Abdulaziz and Hassa bint Ahmed Al Sudairi, making him one of the Sudairi Seven. His full brothers included Fahd and Salman, who would both become kings of Saudi Arabia, and Prince Sultan bin Abdulaziz (later crown prince of Saudi Arabia). Nayef was the twenty-third son of King Abdulaziz. Prince Nayef received education at Princes' School and from senior ulema (Muslim legal scholars). Additionally, he was educated in diplomacy and security affairs. Early experience From 1952 to 1953 Prince Nayef served as vice governor of Riyadh Province. In 1953, he was appointed as the governor of Riyadh provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Groundwater Recharge
Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater. Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and is often expressed as a flux to the water table surface. Groundwater recharge also encompasses water moving away from the water table farther into the saturated zone. Recharge occurs both naturally (through the water cycle) and through anthropogenic processes (i.e., "artificial groundwater recharge"), where rainwater and or reclaimed water is routed to the subsurface. Processes Water is recharged naturally by rain and snow melt and to a smaller extent by surface water (rivers and lakes). Recharge may be impeded somewhat by human activities including paving, development, or logging. These activities can result in loss of topsoil resulting in reduced water infiltration, enhanced surface runoff and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wadi Najran
Wadi Najran ( ar, وَادِي نَجْرَان, Wādī Najrān) is one of the largest valleys in the Arabian Peninsula, and its tributaries come from the Sarat mountains and hills surrounding the area. It extends to the east from its mouth in the plains where it ends in the sands of the Empty Quarter. The average size in the plains is . The river divides the city of Najran into two parts, causing extensive damage when it floods. It is the main source of water supply for the region and brings large amounts of silt deposited in the plains and flooded farms along its banks Wiczidha fertility. The Najran Valley Dam The Najran Valley Dam ( ar, سدّ وَادِي نَجْرَان, Sadd Wādī Najrān / Sudd Wādī Najrān) is an arch dam on Wadi Najran about southwest of Najran, in the Najran Province of southwest Saudi Arabia. It has several purpose to ... is located on its course. References External linksNajran UniversityNajran Map Valleys of Saudi Arabia Najra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flood Control
Flood control methods are used to reduce or prevent the detrimental effects of flood waters."Flood Control", MSN Encarta, 2008 (see below: Further reading). Flood relief methods are used to reduce the effects of flood waters or high water levels. Flooding can be caused by a mix of both natural processes, such as extreme weather upstream, and human changes to waterbodies and runoff. Though building hard infrastructure to prevent flooding, such as flood walls, can be effective at managing flooding, increased best practice within landscape engineering is to rely more on soft infrastructure and natural systems, such as marshes and flood plains, for handling the increase in water. For flooding on coasts, coastal management practices have to not only handle changes water flow, but also natural processes like tides. Flood control and relief is a particularly important part of climate change adaptation and climate resilience, both sea level rise and changes in the weather (climate cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Supply
Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Public water supply systems are crucial to properly functioning societies. These systems are what supply drinking water to populations around the globe. Aspects of service quality include continuity of supply, water quality and water pressure. The institutional responsibility for water supply is arranged differently in different countries and regions (urban versus rural). It usually includes issues surrounding policy and regulation, service provision and standardization. The cost of supplying water consists, to a very large extent, of fixed costs (capital costs and personnel costs) and only to a small extent of variable costs that depend on the amount of water consumed (mainly energy and chemicals). Almost all service providers in the world charge tariffs to recover part of their costs. Water supply is a separate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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