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98-640: It forms its own drainage basin , covering an area of approximately 548 km (212 sq mi), and is bordered to the north by the Wadi Al Qor ; to the south by the Wadi Fayd; and to the west by the Mahadah drainage basin (Wadi Andhayrah, Wadi Khuraymah, Wadi Mayhah and others, flowing into the large alluvial plain of Madam Plain and the Wadi Yudayyah). The main wadi, which gives its name to

196-484: A sink , which may be a permanent lake, a dry lake , or a point where surface water is lost underground . Drainage basins are similar but not identical to hydrologic units , which are drainage areas delineated so as to nest into a multi-level hierarchical drainage system . Hydrologic units are defined to allow multiple inlets, outlets, or sinks. In a strict sense, all drainage basins are hydrologic units but not all hydrologic units are drainage basins. About 48.71% of

294-529: A tropical , hot desert climate ( Köppen BWh). Summers in Dubai are extremely hot, prolonged, windy, and humid, with an average high around 40 °C (104 °F) and overnight lows around 30 °C (86 °F) in the hottest month, August. Most days are sunny throughout the year. Winters are mild to warm, with an average high of 24 °C (75 °F) and overnight lows of 14 °C (57 °F) in January,

392-414: A watershed , though in other English-speaking places, "watershed" is used only in its original sense, that of the drainage divide line. A drainage basin's boundaries are determined by watershed delineation , a common task in environmental engineering and science. In a closed drainage basin, or endorheic basin , rather than flowing to the ocean, water converges toward the interior of the basin, known as

490-518: A construction boom that brought a massive influx of foreign workers, mainly Asians and Middle Easterners. Between 1968 and 1975, the city's population grew by over 300%. As part of the infrastructure for pumping and transporting oil from the Fateh field, located offshore of the Jebel Ali area of Dubai, two 500,000-gallon storage tanks were built, known locally as "Kazzans", by welding them together on

588-486: A crest length of approximately 220 m (720 ft). The dam core is made of asphalt concrete with a gravel-fill embankment. A new dam and pumped storage hydropower plant located near the existing reservoir is under construction. A short distance from the Wadi Hatta riverbed, in the area known as Jabal al Yamh , in the territory of Dubai , the archaeological site of Hatta contains more than 50 burials dating from

686-510: A disastrous occurrence in a town where many family homes were still constructed from barasti – palm fronds. The conflagration consumed half the houses of Bur Dubai, while the district of Deira was said to have been totally destroyed. The following year, more fires broke out. A female slave was caught in the act of starting one such blaze and was subsequently put to death. In 1901, Maktoum bin Hasher Al Maktoum established Dubai as

784-454: A drainage basin, and there are different ways to interpret that data. In the unlikely event that the gauges are many and evenly distributed over an area of uniform precipitation, using the arithmetic mean method will give good results. In the Thiessen polygon method, the drainage basin is divided into polygons with the rain gauge in the middle of each polygon assumed to be representative for

882-540: A drainage boundary is referred to as watershed delineation . Finding the area and extent of a drainage basin is an important step in many areas of science and engineering. Most of the water that discharges from the basin outlet originated as precipitation falling on the basin. A portion of the water that enters the groundwater system beneath the drainage basin may flow towards the outlet of another drainage basin because groundwater flow directions do not always match those of their overlying drainage network. Measurement of

980-556: A free port with no taxation on imports or exports and also gave merchants parcels of land and guarantees of protection and tolerance. These policies saw a movement of merchants not only directly from Lingeh, but also those who had settled in Ras Al Khaimah and Sharjah (which had historical links with Lingeh through the Al Qawasim tribe) to Dubai. An indicator of the growing importance of the port of Dubai can be gained from

1078-496: A lot of money." According to Fedel Handhal, a scholar on the UAE's history and culture, the word Dubai may have come from the word dabba ( Arabic : دب ) (a past tense derivative of yadibbu ( Arabic : يدب ), which means "to creep"), referring to the slow flow of Dubai Creek inland. The poet and scholar Ahmad Mohammad Obaid traces it to the same word, but to its alternative meaning of "baby locust " ( Arabic : جراد ) due to

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1176-480: A natural inlet, Dubai Creek , which has been dredged to make it deep enough for large vessels to pass through. Dubai also has multiple gorges and waterholes, which dot the base of the Western Al Hajar mountains. A vast sea of sand dunes covers much of southern Dubai and eventually leads into the desert known as The Empty Quarter . Seismically , Dubai is in a very stable zone—the nearest seismic fault line,

1274-518: A negative financial impact on the city, with depositors and traders withdrawing money and trade. However, Dubai rebounded in a changing political climate and prospered. In the late 1990s, various foreign trading communities—initially from Kuwait , during the Gulf War, and later from Bahrain , amidst the Shia unrest—relocated their businesses to Dubai. Dubai served as refuelling base for allied forces at

1372-402: A new airport terminal building was constructed which included Dubai's first duty-free shops . Throughout the 1960s Dubai was the centre of a lively gold trade, with 1968 imports of gold at some £56 million. This gold was, in the vast majority, re-exported – mainly to customers who took delivery in international waters off India . The import of gold to India had been banned and so the trade

1470-481: A pipeline from wells at Awir and a series of storage tanks and, by 1968, Dubai had a reliable supply of piped water. On 7 April 1961, the Dubai-based MV Dara , a five thousand ton British flagged vessel that plied the route between Basra (Iraq), Kuwait , and Bombay (India), was caught in unusually high winds off Dubai. Early the next morning in heavy seas off Umm al-Quwain, an explosion tore out

1568-474: A population of around 3.79 million (as of 2024), more than 90% of which are expatriates . Beginning in the early 20th century, Dubai developed into a significant regional and international trade hub, emphasizing on tourism and luxury. Dubai has been a center for regional and international trade since the early 20th century, and its economy relies on revenues from trade, tourism, aviation, real estate, and financial services. Oil revenue helped accelerate

1666-716: A series of scientific research, monitoring, education and sustainable recreation initiatives. Among the protected areas is the Hatta Mountain Reserve , located entirely south of the Hatta enclave, on the NNE slope of the Um Alnosoor / Jabal Hatta (1,280 m (4,200 ft)), coinciding with a large part of the upper course of the Wadi Hatta, in a very steep and difficult area. The protected area initially had an area of 27 km (10 sq mi), but in 2017, when

1764-569: A time when the tribes of the interior were also experiencing poverty. In a letter to the Sultan of Muscat in 1911, Butti laments, "Misery and poverty are raging among them, with the result that they are struggling, looting and killing among themselves." In 1910, in the Hyacinth incident , the town was bombarded by HMS Hyacinth , with 37 people killed. Dubai's geographical proximity to Iran made it an important trade location. The town of Dubai

1862-444: A town centre, all of which could feasibly be built with the limited financial resources at the time. 1959 saw the establishment of Dubai's first telephone company, 51% owned by IAL (International Aeradio Ltd) and 49% by Sheikh Rashid and local businessmen and in 1961 both the electricity company and telephone company had rolled out operational networks. The water company (Sheikh Rashid was chairman and majority shareholder) constructed

1960-569: Is in the Book of Geography by the Andalusian - Arab geographer Abu Abdullah al-Bakri . The Venetian pearl merchant Gasparo Balbi visited the area in 1580 and mentioned Dubai ( Dibei ) for its pearling industry. Dubai is thought to have been established as a fishing village in the early 18th century and was, by 1822, a town of some 700–800 members of the Bani Yas tribe and subject to

2058-583: Is located in the territory of Oman, at an approximate altitude of 1,192 m (3,911 ft), on the southern slope and a very short distance from the summit of Jabal Hatta , also known as Um Alnosoor (1,280 m (4,200 ft)). In its upper course, during the initial 3 km (1.9 mi), which runs mainly in Oman territory, the Wadi Hatta flows from west to east with a considerable gradient, with sections of gradient of 28%. Already in Emirati territory,

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2156-487: Is referred to as " watershed management ". In Brazil , the National Policy of Water Resources, regulated by Act n° 9.433 of 1997, establishes the drainage basin as the territorial division of Brazilian water management. When a river basin crosses at least one political border, either a border within a nation or an international boundary, it is identified as a transboundary river . Management of such basins becomes

2254-447: Is separated from adjacent basins by a perimeter, the drainage divide , made up of a succession of elevated features, such as ridges and hills . A basin may consist of smaller basins that merge at river confluences , forming a hierarchical pattern . Other terms for a drainage basin are catchment area , catchment basin , drainage area , river basin , water basin , and impluvium . In North America, they are commonly called

2352-600: Is situated on the Persian Gulf coast of the United Arab Emirates and is roughly at sea level (16 m or 52 ft above). The emirate of Dubai shares borders with Abu Dhabi in the south, Sharjah in the northeast, and the Sultanate of Oman in the southeast. Hatta , a minor exclave of the emirate, is surrounded on three sides by Oman and by the emirates of Ajman (in the west) and Ras Al Khaimah (in

2450-473: Is spelled Wādī Ḥattā . The Wadi Hatta area was populated mainly by the Washahat tribes, Biduwat, and Bani Kaab. [REDACTED] Media related to Wadi Hatta at Wikimedia Commons Drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth , or flows into another body of water , such as a lake or ocean . A basin

2548-614: Is the Dead Sea . Drainage basins have been historically important for determining territorial boundaries, particularly in regions where trade by water has been important. For example, the English crown gave the Hudson's Bay Company a monopoly on the fur trade in the entire Hudson Bay basin, an area called Rupert's Land . Bioregional political organization today includes agreements of states (e.g., international treaties and, within

2646-713: The African Great Lakes , the interiors of Australia and the Arabian Peninsula , and parts in Mexico and the Andes . Some of these, such as the Great Basin, are not single drainage basins but collections of separate, adjacent closed basins. In endorheic bodies of water where evaporation is the primary means of water loss, the water is typically more saline than the oceans. An extreme example of this

2744-755: The Al Bu Falasah tribe seceded from Abu Dhabi and established themselves in Dubai. The exodus from Abu Dhabi was led by Obeid bin Saeed and Maktoum bin Butti , who became joint leaders of Dubai until Ubaid died in 1836, leaving Maktoum to establish the Maktoum dynasty . Dubai signed the General Maritime Treaty of 1820 with the British government along with other Trucial States , following

2842-624: The British campaign in 1819 against Ras Al Khaimah . This led to the 1853 Perpetual Maritime Truce . Dubai also – like its neighbours on the Trucial Coast – entered into an exclusivity agreement in which the United Kingdom took responsibility for the emirate's security in 1892 . In 1841, a smallpox epidemic broke out in the Bur Dubai locality, forcing residents to relocate east to Deira . In 1896, fire broke out in Dubai,

2940-828: The Continental Divide , northern Alaska and parts of North Dakota , South Dakota , Minnesota , and Montana in the United States, the north shore of the Scandinavian peninsula in Europe, central and northern Russia, and parts of Kazakhstan and Mongolia in Asia , which totals to about 17% of the world's land. Just over 13% of the land in the world drains to the Pacific Ocean . Its basin includes much of China, eastern and southeastern Russia, Japan,

3038-530: The Jebel Ali port, a deep-water port accommodating larger ships, marked a significant development. Initially facing challenges, Sheikh Mohammed initiated the JAFZA ( Jebel Ali Free Zone ) around the port in 1985, facilitating unrestricted import of labour and export of capital for foreign companies. Simultaneously, Dubai airport and the aviation industry continued their expansion. The Gulf War in early 1991 had

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3136-714: The Korean Peninsula , most of Indochina, Indonesia and Malaysia, the Philippines, all of the Pacific Islands , the northeast coast of Australia , and Canada and the United States west of the Continental Divide (including most of Alaska), as well as western Central America and South America west of the Andes. The Indian Ocean 's drainage basin also comprises about 13% of Earth's land. It drains

3234-481: The Taipei 101 and officially gaining its title as the tallest skyscraper in the world. Dubai's smart city initiatives, which include smart tourism, play a key role in advancing the city’s growth ambitions, primarily through its Smart Dubai project. In 2016, the world's first functioning 3D-printed office building was opened in Dubai, as part of a drive to boost the Persian Gulf's main tourism and business hub. Dubai

3332-458: The Wadi Hadf , which had journeyed 27 km (17 mi) from its source on the northwest slope of Jabal Hatta, passing through, among others, the towns of Hadf and Sinadil , in Oman, and the enclave of Masfut ( Arabic : مصفوت , romanized :  Sha'biyyat Maşfūt ), from the emirate of Ajman . From Al Khattem Dam, the Wadi Hatta continues its course from west to east, receiving

3430-525: The groundwater . A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. Dubai Dubai is the most populous city in the United Arab Emirates and the capital of the Emirate of Dubai , the most populated of the country's seven emirates . The city has

3528-690: The 3rd and 4th centuries. Prior to the introduction of Islam to the area, the people in this region worshiped Bajir (or Bajar ). After the spread of Islam in the region, the Umayyad Caliph of the eastern Islamic world conquered south-east Arabia and drove out the Sassanians . Excavations by the Dubai Museum in the region of Al-Jumayra ( Jumeirah ) found several artefacts from the Umayyad period. An early mention of Dubai in 1095

3626-564: The Act of Union to form the United Arab Emirates . The seventh emirate, Ras Al Khaimah, joined the UAE on 10 February 1972, following Iran 's annexation of the RAK-claimed Tunbs islands. In 1973, Dubai joined the other emirates to adopt a uniform currency: the UAE dirham . In that same year, the prior monetary union with Qatar was dissolved and the UAE dirham was introduced throughout

3724-544: The British government resulted in a cessation of hostilities. Despite a lack of oil, Dubai's ruler from 1958, Sheikh Rashid bin Saeed Al Maktoum , used revenue from trading activities to build infrastructure. Private companies were established to build and operate infrastructure, including electricity, telephone services, and both the ports and airport operators. An airport of sorts (a runway built on salt flats)

3822-471: The British withdrawal would leave behind. The principle of union was first agreed upon between the ruler of Abu Dhabi, Sheikh Zayed bin Sultan Al Nahyan , and Sheikh Rashid of Dubai on 18 February 1968 meeting in an encampment at Argoub Al Sedirah, near Al Semeih, a desert stop between the two emirates. The two agreed to work towards bringing the other emirates, including Qatar and Bahrain, into

3920-525: The Emirates. Throughout the 1970s, Dubai experienced continued growth fueled by revenues generated from oil and trade, even as the city witnessed an influx of immigrants fleeing the Lebanese civil war . Border disputes between the emirates persisted even after the formation of the UAE; it was only in 1979 that a formal compromise was reached, putting an end to disagreements. In 1979, the establishment of

4018-533: The Jebel Ali Free Zone during the Gulf War and again during the 2003 Invasion of Iraq . Subsequent significant increases in oil prices prompted Dubai to maintain its focus on free trade and tourism. In the early 2000s, construction of artificial islands on the coast of Dubai, known as the Palm Islands and The World Islands , began. The Burj Khalifa was opened in Dubai in 2010, surpassing

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4116-518: The Persian Gulf. In 1937 an oil exploration contract was signed which guaranteed royalty rights for Dubai and concessionary payments to Sheikh Saeed bin Maktoum . However, due to World War II , oil would not be struck until 1966. In the early days since its inception, Dubai was constantly at odds with Abu Dhabi . In 1947, a border dispute between Dubai and Abu Dhabi on the northern sector of their mutual border escalated into war. Arbitration by

4214-424: The Persian Gulf. By then, amenities in the town grew and a modern quarter was established, Al Bastakiya . Dubai was known for its pearl exports until the 1930s; the pearl trade was damaged irreparably by the 1929 Great Depression and the innovation of cultured pearls . With the collapse of the pearling industry, Dubai fell into a deep depression and many residents lived in poverty or migrated to other parts of

4312-623: The US, interstate compacts ) or other political entities in a particular drainage basin to manage the body or bodies of water into which it drains. Examples of such interstate compacts are the Great Lakes Commission and the Tahoe Regional Planning Agency . In hydrology , the drainage basin is a logical unit of focus for studying the movement of water within the hydrological cycle . The process of finding

4410-474: The Zagros Fault, is 200 kilometres (124 miles) from the UAE and is unlikely to have any seismic impact on Dubai. Experts also predict that the possibility of a tsunami in the region is minimal because the Persian Gulf waters are not deep enough to trigger a tsunami. The sandy desert surrounding the city supports wild grasses and occasional date palms. Desert hyacinths grow in the sabkha plains east of

4508-518: The abundance of locusts in the area before settlement. The history of human settlement in the area now defined by the United Arab Emirates is complex and extensive. It points to extensive trading links between the civilisations of the Indus Valley and Mesopotamia , and even as far afield as the Levant . Archaeological finds in the emirate of Dubai, particularly at Al-Ashoosh , Al Sufouh , and

4606-414: The administrative boundaries between the emirates of Dubai and Ajman were modified, the protected area was reduced to 22 km (8.5 sq mi). In January 2019, the same area was declared a Ramsar site of the United Arab Emirates. Alternative names: Wādī Ḥattā, Wādī Ḩattā, Wādī Ḩattā. The name of Wadi Hatta (spelled Wādī Ḩattá), its tributaries, mountains and nearby towns were recorded in

4704-406: The basin, it can form tributaries that change the structure of the land. There are three different main types, which are affected by the rocks and ground underneath. Rock that is quick to erode forms dendritic patterns, and these are seen most often. The two other types of patterns that form are trellis patterns and rectangular patterns. Rain gauge data is used to measure total precipitation over

4802-684: The beach and then digging them out and floating them to drop onto the seabed at the Fateh field. These were constructed by the Chicago Bridge & Iron Company , which gave the beach its local name (Chicago Beach), which was transferred to the Chicago Beach Hotel, which was demolished and replaced by the Jumeirah Beach Hotel in the late 1990s. The Kazzans were an innovative oil storage solution which meant supertankers could moor offshore even in bad weather and avoided

4900-596: The city, the salt-crusted coastal plains, known as sabkha , give way to a north–south running line of dunes. Farther east, the dunes grow larger and are tinged red with iron oxide . The flat sandy desert gives way to the Western Hajar Mountains , which run alongside Dubai's border with Oman at Hatta. The Western Hajar chain has an arid, jagged and shattered landscape, whose mountains rise to about 1,300 metres (4,265 feet) in some places. Dubai has no natural river bodies or oases; however, Dubai does have

4998-503: The city, while acacia and ghaf trees grow in the flat plains within the proximity of the Western Al Hajar mountains. Several indigenous trees such as the date palm and neem as well as imported trees such as the eucalyptus grow in Dubai's natural parks. The MacQueen's bustard , striped hyena , caracal , desert fox , falcon, and Arabian oryx are common in Dubai's desert. Dubai is on the migration path between Europe, Asia, and Africa, and more than 320 migratory bird species pass through

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5096-568: The confluence of the Wadi Wahiyah on the left. Also on its left bank, on the other side of the E44 highway, in the territory of the Emirate of Dubai, and less than 300 meters from the wadi bed, there are traces of large quarries, currently abandoned, whose activity caused a great environmental impact , with irreparable damage to the natural environment, destroying a large part of the mountain and

5194-500: The construction of a jet airport... More and more European and Arab firms are opening up and the future looks bright." In 1962, with expenditure on infrastructure projects already approaching levels some thought imprudent, Sheikh Rashid approached his brother-in-law, the Ruler of Qatar , for a loan to build the first bridge crossing Dubai Creek . This crossing was finished in May 1963 and

5292-588: The courses of several small wadis tributaries to Wadi Hatta. Already in the territory of the Sultanate of Oman, the Wadi Hatta receives from the right the confluence of its main tributary, the Wadi al Qahfi , 37 km (23 mi) long, very popular for hosting along its course numerous natural ponds and freshwater pools, accessible by vehicle through a dirt track. Some visitors and several Emirati tourist information portals confuse this wadi with Wadi Hatta, and one of

5390-419: The development of the city. However, oil production contributed less than 1 percent to the emirate's GDP in 2018. Due to financial secrecy, low taxes, and valuable real estate, Dubai is an appealing destination for money launderers, criminals, corrupt political figures and sanctioned businesspeople to launder or hide money. Dubai has the second-most five-star hotels in the world and the tallest building in

5488-430: The discharge of water from a basin may be made by a stream gauge located at the basin's outlet. Depending on the conditions of the drainage basin, as rainfall occurs some of it seeps directly into the ground. This water will either remain underground, slowly making its way downhill and eventually reaching the basin, or it will permeate deeper into the soil and consolidate into groundwater aquifers. As water flows through

5586-412: The documentation and maps produced between 1950 and 1960 by the British Arabist, cartographer, military officer and diplomat Julian F. Walker , during the work carried out to establish the borders between the then called Trucial States , and later completed by the Ministry of Defence of the United Kingdom , on scale maps 1:100,000 published in 1971. In the National Atlas of the United Arab Emirates it

5684-441: The drainage area is dependent on the soil type. Certain soil types such as sandy soils are very free-draining, and rainfall on sandy soil is likely to be absorbed by the ground. However, soils containing clay can be almost impermeable and therefore rainfall on clay soils will run off and contribute to flood volumes. After prolonged rainfall even free-draining soils can become saturated , meaning that any further rainfall will reach

5782-642: The drainage basin to the mouth, and may accumulate there, disturbing the natural mineral balance. This can cause eutrophication where plant growth is accelerated by the additional material. Because drainage basins are coherent entities in a hydrological sense, it has become common to manage water resources on the basis of individual basins. In the U.S. state of Minnesota , governmental entities that perform this function are called " watershed districts ". In New Zealand, they are called catchment boards. Comparable community groups based in Ontario, Canada, are called conservation authorities . In North America, this function

5880-432: The eastern coast of Africa, the coasts of the Red Sea and the Persian Gulf , the Indian subcontinent , Burma, and most parts of Australia . The five largest river basins (by area), from largest to smallest, are those of the Amazon (7 million km ), the Congo (4 million km ), the Nile (3.4 million km ), the Mississippi (3.22 million km ), and the Río de la Plata (3.17 million km ). The three rivers that drain

5978-414: The emirate in spring and autumn. The waters of Dubai are home to more than 300 species of fish, including the hammour . The typical marine life off the Dubai coast includes tropical fish, jellyfish, coral, dugong , dolphins, whales, and sharks. Various types of turtles can also be found in the area including the hawksbill turtle and green turtle , which are listed as endangered species. Dubai features

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6076-417: The entire drainage basin, is the Wadi Hatta , with numerous tributaries and sub-tributaries forming an important drainage network composed by hundreds of independent streams, most of them unnamed. The main tributaries are: The total length of Wadi Hatta is 57 km (35 mi) , of which 22 km (14 mi) run in Emirati territory, and 35 km (22 mi) in Omani territory. Its river source

6174-523: The first major projects Sheikh Rashid embarked upon when oil revenue started to flow was the construction of Port Rashid , a deep-water free port constructed by British company Halcrow. Originally intended to be a four-berth port, it was extended to sixteen berths as construction was ongoing. The project was an outstanding success, with shipping queuing to access the new facilities. The port was inaugurated on 5 October 1972, although its berths were each pressed into use as soon as they had been built. Port Rashid

6272-412: The greatest portion of western Sub-Saharan Africa , as well as Western Sahara and part of Morocco . The two major mediterranean seas of the world also flow to the Atlantic. The Caribbean Sea and Gulf of Mexico basin includes most of the U.S. interior between the Appalachian and Rocky Mountains , a small part of the Canadian provinces of Alberta and Saskatchewan , eastern Central America ,

6370-435: The ground and along rivers it can pick up nutrients , sediment , and pollutants . With the water, they are transported towards the outlet of the basin, and can affect the ecological processes along the way as well as in the receiving water body . Modern use of artificial fertilizers , containing nitrogen (as nitrates ), phosphorus , and potassium , has affected the mouths of drainage basins. The minerals are carried by

6468-422: The ground at its terminus, the area can go by several names, such playa, salt flat, dry lake , or alkali sink . The largest endorheic basins are in Central Asia , including the Caspian Sea , the Aral Sea , and numerous smaller lakes. Other endorheic regions include the Great Basin in the United States, much of the Sahara Desert , the drainage basin of the Okavango River ( Kalahari Basin ), highlands near

6566-417: The islands of the Caribbean and the Gulf, and a small part of northern South America. The Mediterranean Sea basin, with the Black Sea , includes much of North Africa , east-central Africa (through the Nile River ), Southern , Central, and Eastern Europe , Turkey , and the coastal areas of Israel , Lebanon , and Syria . The Arctic Ocean drains most of Western Canada and Northern Canada east of

6664-521: The most frequented pool areas is wrongly called Hatta Pools . In its lower course, the Wadi Hatta converges with another important tributary, the Wadi Khabab , 20 km (12 mi) long, and a minor tributary: the Wadi Sufaydah . In the final stretch, through the wide fan that forms its extensive alluvial plain and as often occurs in other plains of similar morphology, the Wadi Hatta branches into multiple braided channels , intertwined and interspersed with small islands of coarse sediment. Over time,

6762-409: The most water, from most to least, are the Amazon, Ganges , and Congo rivers. Endorheic basin are inland basins that do not drain to an ocean. Endorheic basins cover around 18% of the Earth's land. Some endorheic basins drain to an Endorheic lake or Inland sea . Many of these lakes are ephemeral or vary dramatically in size depending on climate and inflow. If water evaporates or infiltrates into

6860-422: The movements of the steamer of the Bombay and Persia Steam Navigation Company, which from 1899 to 1901 paid five visits annually to Dubai. In 1902 the company's vessels made 21 visits to Dubai and from 1904 on, the steamers called fortnightly – in 1906, trading 70,000 tones of cargo. The frequency of these vessels only helped to accelerate Dubai's role as an emerging port and trading hub of preference. Lorimer notes

6958-481: The need to pipe oil onshore from Fateh, which is some 60 miles out to sea. Dubai had already embarked on a period of infrastructural development and expansion. Oil revenue flowing from 1969 onwards supported a period of growth with Sheikh Rashid embarking on a policy of building infrastructure and a diversified trading economy before the emirate's limited reserves were depleted. Oil accounted for 24% of GDP in 1990 but had fallen to 7% of GDP by 2004. Critically, one of

7056-405: The north). The Persian Gulf borders the western coast of the emirate. Dubai is positioned at 25°16′11″N 55°18′34″E  /  25.2697°N 55.3095°E  / 25.2697; 55.3095 and covers an area of 1,588 sq mi (4,110 km ), which represents a significant expansion beyond its initial 1,500 sq mi (3,900 km ) designation due to land reclamation from

7154-635: The notably rich trove from Saruq Al Hadid show settlement through the Ubaid and Hafit periods, the Umm Al Nar and Wadi Suq periods, and the three Iron Ages in the UAE. The area was known to the Sumerians as Magan and was a source of metallic goods, notably copper and bronze. The area was covered with sand about 5,000 years ago as the coast retreated inland, becoming part of the city's present coastline. Pre-Islamic ceramics have been found from

7252-475: The potential for recharging groundwater , several dams have been built since the 1990s in the Wadi Hatta catchment area (including all its tributaries), all of them in UAE territory, none in Oman: Of all the dams, the best known, due to its size and large reservoir with a surface area of 30 hectares and permanent water, is Hatta Dam , built at the end of the 1990s. It has a height of 32 m (105 ft) and

7350-418: The rainfall on the area of land included in its polygon. These polygons are made by drawing lines between gauges, then making perpendicular bisectors of those lines form the polygons. The isohyetal method involves contours of equal precipitation are drawn over the gauges on a map. Calculating the area between these curves and adding up the volume of water is time-consuming. Isochrone maps can be used to show

7448-631: The responsibility of the countries sharing it. Nile Basin Initiative , OMVS for Senegal River , Mekong River Commission are a few examples of arrangements involving management of shared river basins. Management of shared drainage basins is also seen as a way to build lasting peaceful relationships among countries. The catchment is the most significant factor determining the amount or likelihood of flooding . Catchment factors are: topography , shape, size, soil type, and land use (paved or roofed areas). Catchment topography and shape determine

7546-461: The river rather than being absorbed by the ground. If the surface is impermeable the precipitation will create surface run-off which will lead to higher risk of flooding; if the ground is permeable, the precipitation will infiltrate the soil. Land use can contribute to the volume of water reaching the river, in a similar way to clay soils. For example, rainfall on roofs, pavements , and roads will be collected by rivers with almost no absorption into

7644-485: The rule of Sheikh Tahnun bin Shakhbut of Abu Dhabi . In 1822, a British naval surveyor noted that Dubai was at that time populated with a thousand people living in an oval-shaped town surrounded by a mud wall, scattered with goats and camels. The main footpath out of the village led to a reedy creek while another trailed off into the desert and merged into caravan routes. In 1833, following tribal feuding, members of

7742-465: The rulers of the Eastern Gulf, the result of a treaty signed in 1892 named the "Exclusive Agreement". This was to change with Prime Minister Harold Wilson 's announcement, on 16 January 1968, that all British troops were to be withdrawn from "East of Aden". The decision was to pitch the coastal emirates, together with Qatar and Bahrain , into fevered negotiations to fill the political vacuum that

7840-469: The sea . Dubai lies directly within the Arabian Desert . However, the topography of Dubai is significantly different from that of the southern portion of the UAE in that much of Dubai's landscape is highlighted by sandy desert patterns, while gravel deserts dominate much of the southern region of the country. The sand consists mostly of crushed shell and coral and is fine, clean and white. East of

7938-409: The second class cabins and started fires. The captain gave the order to abandon ship but two lifeboats capsized and a second explosion occurred. A flotilla of small boats from Dubai, Sharjah , Ajman , and Umm al-Quwain picked up survivors, but 238 of the 819 persons on board were lost in the disaster. The construction of Dubai's first airport was started on the northern edge of the town in 1959 and

8036-485: The second half of the third millennium (2500-2000 BC) in accordance with the traditional type of construction of the cemeteries of Umm Al Nar. The petroglyphs discovered there are among the most diverse in the United Arab Emirates. In 2014, the Dubai Municipality formally established eight protected areas across the Emirate, in order to protect, restore and promote the ecosystemsand biodiversity , through

8134-418: The speed with which the runoff reaches a river. A long thin catchment will take longer to drain than a circular catchment. Size will help determine the amount of water reaching the river, as the larger the catchment the greater the potential for flooding. It is also determined on the basis of length and width of the drainage basin. Soil type will help determine how much water reaches the river. The runoff from

8232-554: The terminal building opened for business in September 1960. The airport was initially serviced by Gulf Aviation (flying Dakotas , Herons, and Viscounts ) but Iran Air commenced services to Shiraz in 1961. In 1962 the British Political Agent noted that "Many new houses and blocks of offices and flats are being built... the Ruler is determined, against advice [from the British authorities] to press on with

8330-415: The time taken for rain to reach the river, while catchment size, soil type, and development determine the amount of water to reach the river. Generally, topography plays a big part in how fast runoff will reach a river. Rain that falls in steep mountainous areas will reach the primary river in the drainage basin faster than flat or lightly sloping areas (e.g., > 1% gradient). Shape will contribute to

8428-477: The time taken for runoff water within a drainage basin to reach a lake, reservoir or outlet, assuming constant and uniform effective rainfall. Drainage basins are the principal hydrologic unit considered in fluvial geomorphology . A drainage basin is the source for water and sediment that moves from higher elevation through the river system to lower elevations as they reshape the channel forms. Drainage basins are important in ecology . As water flows over

8526-576: The transfer from Lingeh "bids fair to become complete and permanent", and also that the town had by 1906 supplanted Lingeh as the chief entrepôt of the Trucial States. The "great storm" of 1908 struck the pearling boats of Dubai and the coastal emirates towards the end of the pearling season that year, resulting in the loss of a dozen boats and over 100 men. The disaster was a major setback for Dubai, with many families losing their breadwinners and merchants facing financial ruin. These losses came at

8624-609: The union. Over the next two years, negotiations and meetings of the rulers followed—often stormy—as a form of union was thrashed out. The nine-state union was never to recover from the October 1969 meeting where British intervention against aggressive activities by two of the Emirates resulted in a walk-out by Bahrain and Qatar. They dropped out of talks, leaving six of the seven "trucial" emirates to agree on union on 18 July 1971. On 2 December 1971, Dubai, together with Abu Dhabi, Sharjah , Ajman , Umm al-Quwain , and Fujairah joined in

8722-578: The wadi turns north, and for 12 km (7.5 mi) it runs through the Hatta Mountain Reserve to the dam (Al Hatta Dam), with a much more moderate slope of 3%. In its middle course, the wadi crosses the urban area of the city of Hatta (previously called Ḩajarayn), and receives from the right the confluence of the Wadi Qimah . One kilometer later, at the Al Khattem Dam, the Wadi Hatta converges with one of its most important tributaries,

8820-460: The wadi's current tends to wander between torrential rains, altering the previous courses, which nevertheless maintain their mark on the plain. Near the area of its mouth, the Wadi Hatta branches into two main channels, reaching the coast of the Gulf of Oman at the city of Al Widayyat, wilaya of Shinas. To supply water to the inhabitants of the area, prevent the danger of flash floods, and increase

8918-672: The world , the Burj Khalifa , which is 828 metres (2,717 ft) tall. Located in the eastern Arabian Peninsula , on the coast of the Persian Gulf , it is a major global transportation hub for passengers and cargo. In 2023, Dubai was the third most-visited city in the world . Many theories have been proposed as to the origin of the word "Dubai". One theory suggests the word used to be the souq in Ba. An Arabic proverb says " Daba Dubai " ( Arabic : دبا دبي ), meaning "They came with

9016-729: The world's land drains to the Atlantic Ocean . In North America , surface water drains to the Atlantic via the Saint Lawrence River and Great Lakes basins, the Eastern Seaboard of the United States, the Canadian Maritimes , and most of Newfoundland and Labrador . Nearly all of South America east of the Andes also drains to the Atlantic, as does most of Western and Central Europe and

9114-566: Was $ 35 an ounce but its market price in India was $ 68 an ounce – a healthy markup. Estimates at the time put the volume of gold imports from Dubai to India at around 75% of the total market. After years of exploration following large finds in neighbouring Abu Dhabi , oil was eventually discovered in territorial waters off Dubai in 1966, albeit in far smaller quantities. The first field was named "Fateh" or "good fortune". This led to an acceleration of Sheikh Rashid's infrastructure development plans and

9212-400: Was an important port of call for foreign tradesmen, chiefly those from Iran, many of whom eventually settled in the town. By the beginning of the 20th century, it was an important port. At that time, Dubai consisted of the town of Dubai and the nearby village of Jumeirah , a collection of some 45 areesh (palm leaf) huts. By the 1920s, many Iranians settled in Dubai permanently, moving across

9310-468: Was characterized as smuggling, although Dubai's merchants were quick to point out that they were making legal deliveries of gold and that it was up to the customer where they took it. In 1966, more gold was shipped from London to Dubai than almost anywhere else in the world (only France and Switzerland took more), at 4 million ounces. Dubai also took delivery of over $ 15 million worth of watches and over 5 million ounces of silver. The 1967 price of gold

9408-581: Was established in Dubai in the 1950s and, in 1959, the emirate's first hotel, the Airlines Hotel, was constructed. This was followed by the Ambassador and Carlton Hotels in 1968. Sheikh Rashid commissioned John Harris from British architectural construction firm Halcrow , to create the city's first master plan in 1959. Harris imagined a Dubai that would rise from the historic centre on Dubai Creek, with an extensive road system, organised zones, and

9506-484: Was paid for by a toll levied on the crossing from the Dubai side of the creek to the Deira side. BOAC was originally reluctant to start regular flights between Bombay and Dubai, fearing a lack of demand for seats. However, by the time the asphalt runway of Dubai Airport was constructed in 1965, opening Dubai to both regional and long haul traffic, a number of foreign airlines were competing for landing rights. In 1970,

9604-451: Was to be further expanded in 1975 to add a further 35 berths before the larger port of Jebel Ali were constructed. Port Rashid was the first of a swath of projects designed to create a modern trading infrastructure, including roads, bridges, schools, and hospitals. Dubai and the other " Trucial States " had long been a British protectorate where the British government took care of foreign policy and defence, as well as arbitrating between

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