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154-574: In the north, there is a large dammed lake called Strandavatnet . The Bergen Line railway, which runs south of Hallingskarvet, has its highest stop at Finse Station at an elevation of 1,222 metres (4,009 ft). In 2006, the Hallingskarvet mountain range became part of the Hallingskarvet National Park . This article about a mountain, mountain range, or peak in Vestland is

308-418: A Ba'athist party state into a totalitarian dictatorship marked by his pervasive grip on the party, armed forces , secret police , media, education sector, religious and cultural spheres and all aspects of civil society. He assigned Alawite loyalists to key posts in the military forces , bureaucracy , intelligence and the ruling elite. A cult of personality revolving around Hafiz and his family became

462-543: A stub . You can help Misplaced Pages by expanding it . This article about a mountain, mountain range, or peak in Buskerud is a stub . You can help Misplaced Pages by expanding it . Dam 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

616-520: A Syrian nation that does not exist... by smoothing the rifts which still divide it" or "cultivate and maintain all the phenomena, which require our arbitration that these divisions give". De Caix added "I must say only the second option interests me". This is what Gouraud did. In 1925, Sultan al-Atrash led a revolt that broke out in the Druze Mountain and spread to engulf the whole of Syria and parts of Lebanon. Al-Atrash won several battles against

770-401: A balancing compression stress in the downstream face, providing additional economy. For this type of dam, it is essential to have an impervious foundation with high bearing strength. Permeable foundations have a greater likelihood of generating uplift pressures under the dam. Uplift pressures are hydrostatic pressures caused by the water pressure of the reservoir pushing up against the bottom of

924-516: A core tenet of Ba'athist ideology , which espoused that Assad dynasty was destined to rule perennially. On 6 October 1973, Syria and Egypt initiated the Yom Kippur War against Israel. The Israel Defense Forces reversed the initial Syrian gains and pushed deeper into Syrian territory. The village of Quneitra was largely destroyed by the Israeli army. In the late 1970s, an Islamist uprising by

1078-533: A dam as "jurisdictional" or "non-jurisdictional" varies by location. In the United States, each state defines what constitutes a non-jurisdictional dam. In the state of Colorado a non-jurisdictional dam is defined as a dam creating a reservoir with a capacity of 100 acre-feet or less and a surface area of 20 acres or less and with a height measured as defined in Rules 4.2.5.1. and 4.2.19 of 10 feet or less. In contrast,

1232-495: A dam that directed waterflow. It was finished in 251 BC. A large earthen dam, made by Sunshu Ao , the prime minister of Chu (state) , flooded a valley in modern-day northern Anhui Province that created an enormous irrigation reservoir (100 km (62 mi) in circumference), a reservoir that is still present today. Roman dam construction was characterized by "the Romans' ability to plan and organize engineering construction on

1386-485: A distinct vertical curvature to it as well lending it the vague appearance of a concave lens as viewed from downstream. The multiple-arch dam consists of a number of single-arch dams with concrete buttresses as the supporting abutments, as for example the Daniel-Johnson Dam , Québec, Canada. The multiple-arch dam does not require as many buttresses as the hollow gravity type but requires a good rock foundation because

1540-471: A grand scale." Roman planners introduced the then-novel concept of large reservoir dams which could secure a permanent water supply for urban settlements over the dry season. Their pioneering use of water-proof hydraulic mortar and particularly Roman concrete allowed for much larger dam structures than previously built, such as the Lake Homs Dam , possibly the largest water barrier to that date, and

1694-466: A group of Syrian Ba'athist officers, alarmed by the party's poor position and the increasing fragility of the union, decided to form a secret Military Committee; its initial members were Lieutenant-Colonel Muhammad Umran , Major Salah Jadid and Captain Hafiz al-Assad. Syria seceded from the union with Egypt on 28 September 1961, after a coup and terminated the political union. The instability which followed

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1848-629: A lesser degree Babylonia . The Egyptians initially occupied much of the south, while the Hittites, and the Mitanni, much of the north. However, Assyria eventually gained the upper hand, destroying the Mitanni Empire and annexing huge swathes of territory previously held by the Hittites and Babylon. Around the 14th century BC, various Semitic peoples appeared in the area, such as the semi-nomadic Suteans who came into an unsuccessful conflict with Babylonia to

2002-746: A major shift in relations with both other Arab states and the Western world, Syria participated in the United States-led Gulf War against Saddam Hussein . The country participated in the multilateral Madrid Conference of 1991 , and during the 1990s engaged in negotiations with Israel along with Palestine and Jordan . These negotiations failed, and there have been no further direct Syrian-Israeli talks since President Hafiz al-Assad's meeting with then President Bill Clinton in Geneva in 2000. Hafiz al-Assad died on 10 June 2000. His son, Bashar al-Assad ,

2156-505: A minor tributary of the Nieuwe Maas . The central square of Amsterdam, covering the original site of the 800-year-old dam, still carries the name Dam Square . The Romans were the first to build arch dams , where the reaction forces from the abutment stabilizes the structure from the external hydrostatic pressure , but it was only in the 19th century that the engineering skills and construction materials available were capable of building

2310-505: A notable increase in interest in SHPs. Couto and Olden (2018) conducted a global study and found 82,891 small hydropower plants (SHPs) operating or under construction. Technical definitions of SHPs, such as their maximum generation capacity, dam height, reservoir area, etc., vary by country. A dam is non-jurisdictional when its size (usually "small") excludes it from being subject to certain legal regulations. The technical criteria for categorising

2464-564: A number of provinces under the Roman Empire (but politically independent from each other): Judaea , later renamed Palaestina in AD 135 (the region corresponding to modern-day Israel , the Palestinian Territories, and Jordan) in the extreme southwest; Phoenice (established in AD 194) corresponding to modern Lebanon, Damascus and Homs regions; Coele-Syria (or "Hollow Syria") and south of

2618-627: A profession based on a rigorously applied scientific theoretical framework. This new emphasis was centered around the engineering faculties of universities in France and in the United Kingdom. William John Macquorn Rankine at the University of Glasgow pioneered the theoretical understanding of dam structures in his 1857 paper On the Stability of Loose Earth . Rankine theory provided a good understanding of

2772-505: A semiarid steppe zone, to arid desert in the east. The country consists mostly of arid plateau, although the northwest part bordering the Mediterranean is fairly green. Al-Jazira in the northeast and Hawran in the south are important agricultural areas. The Euphrates , Syria's most important river, crosses the country in the east. Syria is one of the fifteen states that comprise the so-called " cradle of civilization ". Its land straddles

2926-561: A settling pond, and a 1,000 m (3,300 ft) canal to a distribution tank. These works were not finished until 325 AD when the dam permitted the irrigation of 25,000 acres (100 km ). Eflatun Pınar is a Hittite dam and spring temple near Konya , Turkey. It is thought to date from the Hittite empire between the 15th and 13th centuries BC. The Kallanai is constructed of unhewn stone, over 300 m (980 ft) long, 4.5 m (15 ft) high and 20 m (66 ft) wide, across

3080-627: A short-lived independent Kingdom of Syria was established under Faisal I of the Hashemite family. However, his rule over Syria ended after only a few months, following the Battle of Maysalun . French troops occupied Syria later that year after the San Remo conference proposed that the League of Nations put Syria under a French mandate. General Gouraud had according to his secretary de Caix two options: "Either build

3234-520: A suspected nuclear reactor under construction by North Korean technicians. The Syrian civil war is an ongoing internal violent conflict in Syria. It is a part of the wider Arab Spring , a wave of upheaval throughout the Arab World . Public demonstrations across Syria began on 26 January 2011 and developed into a nationwide uprising. Protesters demanded the resignation of President Bashar al-Assad ,

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3388-452: A system that led to peaceful coexistence. Each ethno-religious minority— Arab Shia Muslim , Arab Sunni Muslim , Aramean - Syriac Orthodox , Greek Orthodox , Maronite Christians , Assyrian Christians , Armenians , Kurds and Jews —constituted a millet . The religious heads of each community administered all personal status laws and performed certain civil functions as well. In 1831, Ibrahim Pasha of Egypt renounced his loyalty to

3542-408: A whole dam itself, that dam also would be held in place by gravity, i.e., there is no tension in the upstream face of the dam holding the top of the dam down. The designer does this because it is usually more practical to make a dam of material essentially just piled up than to make the material stick together against vertical tension. The shape that prevents tension in the upstream face also eliminates

3696-515: Is Syria's capital and largest city. With a population of 25.0 million across an area of 185,180 square kilometres (71,500 sq mi), it is the 57th most populous and 87th largest country. The name "Syria" historically referred to a wider region , broadly synonymous with the Levant, and known in Arabic as al-Sham . The modern state encompasses the sites of several ancient kingdoms and empires, including

3850-641: Is a presidential state that nominally permits the candidacy of individuals who do not form part of the Ba'ath -controlled National Progressive Front . Despite this, Syria remains a one-party state with an extensive secret police apparatus that curtails any independent political activity. The new constitution introduced single-handedly by the Assad regime , without participation of the Syrian opposition , has bolstered its authoritarian character by bestowing extraordinary powers on

4004-424: Is dependent on the strength of the side wall abutments, hence not only should the arch be well seated on the side walls but also the character of the rock should be carefully inspected. Two types of single-arch dams are in use, namely the constant-angle and the constant-radius dam. The constant-radius type employs the same face radius at all elevations of the dam, which means that as the channel grows narrower towards

4158-537: Is extremely limited, and the country is ranked 2nd worst in the 2024 World Press Freedom Index . Syria is the most corrupt country in the Middle East and was ranked the 2nd lowest globally on the 2023 Corruption Perceptions Index . The country has also become the epicentre of a state-sponsored multi-billion dollar illicit drug cartel , the largest in the world. The civil war has resulted in more than 600,000 deaths, with pro-Assad forces causing more than 90% of

4312-510: Is home to diverse ethnic and religious groups . Arabs are the largest ethnic group, and Sunni Muslims are the largest religious group. It is now the only country that is governed by Ba'athists , who advocate Arab socialism and nationalism . The country's current Ba'athist government is a totalitarian dictatorship with a comprehensive cult of personality around the Assad family , and has attracted widespread criticism for its severe domestic repression and war crimes . Being ranked 4th worst in

4466-480: 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 word dam can be traced back to Middle English , and before that, from Middle Dutch , as seen in

4620-437: Is represented by rectangular houses of Mureybet culture. At the time of the pre-pottery Neolithic, people used containers made of stone, gyps, and burnt lime ( Vaisselle blanche ). The discovery of obsidian tools from Anatolia are evidence of early trade. The ancient cities of Hamoukar and Emar played an important role during the late Neolithic and Bronze Age. Archaeologists have demonstrated that civilization in Syria

4774-471: Is sloped the distribution is more complicated. The normal component of the weight of the arch ring may be taken by the arch action, while the normal hydrostatic pressure will be distributed as described above. For this type of dam, firm reliable supports at the abutments (either buttress or canyon side wall) are more important. The most desirable place for an arch dam is a narrow canyon with steep side walls composed of sound rock. The safety of an arch dam

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4928-399: Is the more widely used of the two, though the hollow dam is frequently more economical to construct. Grand Coulee Dam is a solid gravity dam and Braddock Locks & Dam is a hollow gravity dam. A gravity dam can be combined with an arch dam into an arch-gravity dam for areas with massive amounts of water flow but less material available for a pure gravity dam. The inward compression of

5082-576: Is the thinnest arch dam in the world and one of the oldest arch dams in Asia. It was constructed some 700 years ago in Tabas county , South Khorasan Province , Iran . It stands 60 meters tall, and in crest is a one meter width. Some historians believe the dam was built by Shāh Abbās I, whereas others believe that he repaired it. In the Netherlands , a low-lying country, dams were often built to block rivers to regulate

5236-718: The 1961 coup culminated in the 8 March 1963 Ba'athist coup . The takeover was engineered by members of the Arab Socialist Ba'ath Party , led by Michel Aflaq and Salah al-Din al-Bitar . The new Syrian cabinet was dominated by Ba'ath members. Since the 1963 seizure of power by its Military Committee , the Ba'ath party has ruled Syria as a totalitarian state . Ba'athists took control over country's politics, education, culture, religion and surveilled all aspects of civil society through its powerful Mukhabarat (secret police). Syrian Arab Armed forces and secret police were integrated with

5390-707: The Austro-Hungarian Empire . It ultimately suffered defeat and loss of control of the entire Near East to the British Empire and French Empire . During the conflict, genocide against indigenous Christian peoples was carried out by the Ottomans and their allies in the form of the Armenian genocide and Assyrian genocide , of which Deir ez-Zor , in Ottoman Syria, was the final destination of these death marches. In

5544-749: The Crusades and were known collectively as the Crusader states among which the primary one in Syria was the Principality of Antioch . The coastal mountainous region was also occupied in part by the Nizari Ismailis , the so-called Assassins , who had intermittent confrontations and truces with the Crusader States. Later in history when "the Nizaris faced renewed Frankish hostilities, they received timely assistance from

5698-674: The Eblan civilization of the 3rd millennium BC . Damascus and Aleppo are cities of great cultural significance. During the Islamic rule, Damascus was the seat of the Umayyad Caliphate and a provincial capital for the Mamluk Sultanate in Egypt . The modern Syrian state was established in the mid-20th century after centuries of Ottoman rule , as a French Mandate. The newly created state represented

5852-526: The Eleutheris river . Since approximately the 11th millennium BC, Syria was one of the centers of Neolithic culture (known as Pre-Pottery Neolithic A ), where agriculture and cattle breeding first began to appear. The site of Tell Qaramel in Aleppo Governorate has several round stone towers dated to 10650 BC, making them the oldest structures of this kind in the world. The Neolithic period ( PPNB )

6006-537: The European Union states , the Gulf Cooperation Council states , and other countries have condemned the use of violence against the protesters. China and Russia have avoided condemning the government or applying sanctions, saying that such methods could escalate into foreign intervention. However, military intervention has been ruled out by most countries. The Arab League suspended Syria's membership over

6160-634: The Fayum Depression to the Nile in Middle Egypt. Two dams called Ha-Uar running east–west were built to retain water during the annual flood and then release it to surrounding lands. The lake called Mer-wer or Lake Moeris covered 1,700 km (660 sq mi) and is known today as Birket Qarun. By the mid-late third millennium BC, an intricate water-management system in Dholavira in modern-day India

6314-615: The Greco-Roman world both the Arameans of Syria and the Assyrians of Mesopotamia (modern day Iraq ) to the east were referred to as "Syrians" or "Syriacs", despite these being distinct peoples in their own right, a confusion which would continue into the modern world. Eventually parts of southern Seleucid Syria were taken by the Jewish Hasmoneans dynasty upon the slow disintegration of

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6468-561: The Harbaqa Dam , both in Roman Syria . The highest Roman dam was the Subiaco Dam near Rome ; its record height of 50 m (160 ft) remained unsurpassed until its accidental destruction in 1305. Roman engineers made routine use of ancient standard designs like embankment dams and masonry gravity dams. Apart from that, they displayed a high degree of inventiveness, introducing most of

6622-685: The Hellenistic Empire. Syria briefly came under Armenian control from 83 BC, with the conquests of the Armenian king Tigranes the Great , who was welcomed as a savior from the Seleucids and Romans by the Syrian people. However, Pompey the Great , a general of the Roman Empire , rode to Syria and captured Antioch , its capital, and turned Syria into a Roman province in 64 BC, thus ending Armenian control over

6776-555: The Hurrian and Hattian peoples to the northwest, in Asia Minor . Gifts from Pharaohs , found during excavations, confirm Ebla's contact with Egypt . One of the earliest written texts from Syria is a trading agreement between Vizier Ibrium of Ebla and an ambiguous kingdom called Abarsal c. 2300 BC. Scholars believe the language of Ebla to be among the oldest known written Semitic languages after Akkadian . Recent classifications of

6930-670: The Hurrians states and the Euphrates Valley down to the borders with Babylon. The army of Yamhad campaigned as far away as Dēr on the border of Elam (modern Iran). Yamhad was conquered and destroyed, along with Ebla, by the Hittites from Asia Minor circa 1600 BC. From this time, Syria became a battle ground for various foreign empires, these being the Hittite Empire , Mitanni Empire, Egyptian Empire , Middle Assyrian Empire , and to

7084-512: The Lakhmids and Ghassanids dwelling in the deserts of southern Syria. Syriac Christianity had taken hold as the major religion, although others still followed Judaism , Mithraism , Manicheanism , Greco-Roman Religion , Canaanite Religion and Mesopotamian Religion . Syria's large and prosperous population made Syria one of the most important of the Roman and Byzantine provinces, particularly during

7238-661: The Levant , and from this point the Greeks applied the term without distinction between the Assyrians of Mesopotamia and Arameans of the Levant. Mainstream modern academic opinion strongly favors the argument that the Greek word is related to the cognate Ἀσσυρία , Assyria , ultimately derived from the Akkadian Aššur . The Greek name appears to correspond to Phoenician ʾšr "Assur", ʾšrym "Assyrians", recorded in

7392-563: The Muslim Brotherhood was aimed against the government. Islamists attacked civilians and off-duty military personnel, leading security forces to also kill civilians in retaliatory strikes. The uprising had reached its climax in the 1982 Hama massacre , when more than 40,000 people were killed by Syrian military troops and Ba'athist paramilitaries. It has been described as the "single deadliest act" of violence perpetrated by any state upon its own population in modern Arab history In

7546-734: The National Inventory of Dams (NID). Syria Syria , officially the Syrian Arab Republic , is a country in West Asia located in the Eastern Mediterranean and the Levant . It is bounded by the Mediterranean Sea to the west, Turkey to the north, Iraq to the east and southeast , Jordan to the south , and Israel and Lebanon to the southwest . It is a republic comprising 14 governorates . Damascus

7700-467: The Neo-Babylonian Empire and had been annexed by the Achaemenid Empire in 539 BC. Led by Cyrus the Great , the Achaemenid Persians retained Imperial Aramaic as one of the diplomatic languages of their empire (539 BC – 330 BC), as well as the Assyrian name for the new satrapy of Aram/Syria Eber-Nari . Syria was later conquered by the Macedonian Empire which was ruled by Alexander the Great c. 330 BC, and consequently became Coele-Syria province of

7854-411: The Palestine Liberation Organization (PLO) led by Yasser Arafat during the " Black September (also known as the Jordan Civil War of 1970)" hostilities with Jordan reflected this disagreement. The power struggle culminated in the November 1970 Syrian Corrective movement , a bloodless military coup that installed Hafiz al-Assad as the strongman of the government. General Hafiz al-Assad transformed

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8008-410: The Presidency and a Ba'athist political committee continues to be responsible for authorization of political parties. The ruling Arab Socialist Ba'ath Party governs Syria as a totalitarian police state , through its control of the Syrian military and security apparatus. 50th edition of Freedom in the World , the annual report published by Freedom House in 2023, designates Syria as "Worst of

8162-457: The Schutzstaffel , to build up their armed forces and military intelligence capabilities. Defeat in this war was one of several trigger factors for the March 1949 Syrian coup d'état by Col. Husni al-Za'im , described as the first military overthrow of the Arab World since the start of the Second World War. This was soon followed by another overthrow, by Col. Sami al-Hinnawi , who was himself quickly deposed by Col. Adib Shishakli , all within

8316-470: The Scythians ravaged and plundered much of Syria. The last stand of the Assyrian army was at Carchemish in northern Syria in 605 BC. The Assyrian Empire was followed by the Neo-Babylonian Empire (605 BC – 539 BC). During this period, Syria became a battle ground between Babylonia and another former Assyrian colony, that of Egypt . The Babylonians, like their Assyrian relations, were victorious over Egypt. Lands that constitute modern day Syria were part of

8470-470: The Seleucid Empire (323 BC – 64 BC), with the Seleucid kings styling themselves 'King of Syria' and the city of Antioch being its capital starting from 240. Thus, it was the Greeks who introduced the name "Syria" to the region. Originally an Indo-European corruption of "Assyria" in northern Mesopotamia (Iraq), the Greeks used this term to describe not only Assyria itself but also the lands to the west which had for centuries been under Assyrian dominion. Thus in

8624-645: The University of Oxford published a study of the cost of large dams – based on the largest existing dataset – documenting significant cost overruns for a majority of dams and questioning whether benefits typically offset costs for such dams. Dams can be formed by human agency, natural causes, or even by the intervention of wildlife such as beavers . Man-made dams are typically classified according to their size (height), intended purpose or structure. Based on structure and material used, dams are classified as easily created without materials, arch-gravity dams , embankment dams or masonry dams , with several subtypes. In

8778-412: The total civilian casualties . The war led to a massive refugee crisis , with an estimated 7.6 million internally displaced people (July 2015 UNHCR figure) and over 5 million refugees (July 2017 registered by UNHCR ). The war has also worsened economic conditions, with more than 90% of the population living in poverty and 80% facing food insecurity . The Arab League , the United States ,

8932-459: The "northwest of the Arabian plate ". Petroleum in commercial quantities was first discovered in the northeast in 1956. The most important oil fields are those of al-Suwaydiyah , Karatchok , Rmelan near al-Hasakah , as well as al-Omar and al-Taym fields near Dayr az–Zawr . The fields are a natural extension of the Iraqi fields of Mosul and Kirkuk . Petroleum became Syria's leading natural resource and chief export after 1974. Natural gas

9086-438: The 13th century BC, founding city states such as Amrit , Simyra , Arwad , Paltos , Ramitha , and Shuksi . From these coastal regions, they eventually spread their influence throughout the Mediterranean , including building colonies in Malta , Sicily, the Iberian peninsula (modern Spain and Portugal ), and the coasts of North Africa and most significantly, founding the major city-state of Carthage (in modern Tunisia ) in

9240-445: The 2024 Fragile States Index , Syria is one of the most dangerous places for journalists . Freedom of press is extremely limited, and the country is ranked 2nd worst in the 2024 World Press Freedom Index . It is the most corrupt country in the MENA region and was ranked the 2nd lowest globally on the 2023 Corruption Perceptions Index . Syria has also become the epicentre of a state-sponsored multi-billion dollar illicit drug cartel ,

9394-412: The 2nd and 3rd centuries (AD). Syrians held considerable power during the Severan dynasty . The matriarch of the family and Empress of Rome as wife of emperor Septimius Severus was Julia Domna , a Syrian from the city of Emesa (modern day Homs ), whose family held hereditary rights to the priesthood of the god El-Gabal . Her great nephews, also Arabs from Syria, would also become Roman Emperors,

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9548-408: The 7th and 8th centuries AD, and was to be a vehicle for the spread of Christianity. The Assyrians named their colonies of Syria and Lebanon Eber-Nari . Assyrian domination ended after the Assyrians greatly weakened themselves in a series of brutal internal civil wars, followed by attacks from: the Medes , Babylonians , Chaldeans , Persians , Scythians and Cimmerians . During the fall of Assyria,

9702-492: The 8th century BC Çineköy inscription . The area designated by the word has changed over time. Classically, Syria lies at the eastern end of the Mediterranean, between Arabia to the south and Asia Minor to the north, stretching inland to include parts of Iraq, and having an uncertain border to the northeast that Pliny the Elder describes as including, from west to east, Commagene , Sophene , and Adiabene . By Pliny's time, however, this larger Syria had been divided into

9856-411: The 9th century BC, which was much later to become the center of a major empire, rivaling the Roman Republic . Syria and the Western half of Near East then fell to the vast Neo Assyrian Empire (911 BC – 605 BC). The Assyrians introduced Imperial Aramaic as the lingua franca of their empire. This language was to remain dominant in Syria and the entire Near East until after the Islamic conquest in

10010-440: The Ayyubids." After a century of Seljuk rule, Syria was largely conquered (1175–1185) by the Kurdish liberator Salah ad-Din , founder of the Ayyubid dynasty of Egypt. Aleppo fell to the Mongols of Hulegu in January 1260, and Damascus in March, but then Hulegu was forced to break off his attack to return to China to deal with a succession dispute. A few months later, the Mamluks arrived with an army from Egypt and defeated

10164-464: The Ba'ath party apparatus; after the purging of traditional civilian and military elites by the new regime. The 1963 Ba'athist coup marked a "radical break" in modern Syrian history , after which Ba'ath party monopolised power in the country to establish a one-party state and shaped a new socio-political order by enforcing its state ideology . On 23 February 1966, the neo-Ba'athist Military Committee carried out an intra-party rebellion against

10318-409: The Ba'athist Old Guard ( Aflaq and Bitar ), imprisoned President Amin al-Hafiz and designated a regionalist, civilian Ba'ath government on 1 March. Although Nureddin al-Atassi became the formal head of state, Salah Jadid was Syria's effective ruler from 1966 until November 1970, when he was deposed by Hafiz al-Assad , who at the time was Minister of Defense. The coup led to the schism within

10472-437: The British began construction in 1898. The project was designed by Sir William Willcocks and involved several eminent engineers of the time, including Sir Benjamin Baker and Sir John Aird , whose firm, John Aird & Co. , was the main contractor. Capital and financing were furnished by Ernest Cassel . When initially constructed between 1899 and 1902, nothing of its scale had ever before been attempted; on completion, it

10626-405: The Colorado River is a constant-angle arch dam. A similar type is the double-curvature or thin-shell dam. Wildhorse Dam near Mountain City, Nevada , in the United States is an example of the type. This method of construction minimizes the amount of concrete necessary for construction but transmits large loads to the foundation and abutments. The appearance is similar to a single-arch dam but with

10780-403: The Colorado River. By 1997, there were an estimated 800,000 dams worldwide, with some 40,000 of them over 15 meters high. Early dam building took place in Mesopotamia and the Middle East . Dams were used to control water levels, for Mesopotamia's weather affected the Tigris and Euphrates Rivers. The earliest known dam is the Jawa Dam in Jordan , 100 kilometres (62 mi) northeast of

10934-425: The Eblaite language have shown that it was an East Semitic language , closely related to the Akkadian language . Ebla was weakened by a long war with Mari , and the whole of Syria became part of the Mesopotamian Akkadian Empire after Sargon of Akkad and his grandson Naram-Sin 's conquests ended Eblan domination over Syria in the first half of the 23rd century BC. By the 21st century BC, Hurrians settled in

11088-527: The Empire and overran Ottoman Syria , capturing Damascus. His short-term rule over the domain attempted to change the demographics and social structure of the region: he brought thousands of Egyptian villagers to populate the plains of Southern Syria , rebuilt Jaffa and settled it with veteran Egyptian soldiers aiming to turn it into a regional capital, and he crushed peasant and Druze rebellions and deported non-loyal tribesmen. By 1840, however, he had to surrender

11242-467: The French, notably the Battle of al-Kafr on 21 July 1925, the Battle of al-Mazraa on 2–3 August 1925, and the battles of Salkhad, al-Musayfirah and Suwayda. France sent thousands of troops from Morocco and Senegal, leading the French to regain many cities, although resistance lasted until the spring of 1927. The French sentenced Sultan al-Atrash to death, but he had escaped with the rebels to Transjordan and

11396-684: The Middle Ages, dams were built in the Netherlands to regulate water levels and prevent sea intrusion. In the 19th century, large-scale arch dams were constructed around the British Empire, marking advances in dam engineering techniques. The era of large dams began with the construction of the Aswan Low Dam in Egypt in 1902. The Hoover Dam, a massive concrete arch-gravity dam, was built between 1931 and 1936 on

11550-564: The Middle Assyrian Empire, who also annexed much of the west during the reign of Tiglath-Pileser I 1114–1076 BC. With the destruction of the Hittites and the decline of Assyria in the late 11th century BC, the Aramean tribes gained control of much of the interior, founding states such as Bit Bahiani , Aram-Damascus , Hamath , Aram-Rehob , Aram-Naharaim , and Luhuti . From this point, the region became known as Aramea or Aram . There

11704-551: The Mongols in the Battle of Ain Jalut in Galilee . The Mamluk leader, Baibars , made Damascus a provincial capital. When he died, power was taken by Qalawun . In the meantime, an emir named Sunqur al-Ashqar had tried to declare himself ruler of Damascus, but he was defeated by Qalawun on 21 June 1280, and fled to northern Syria. Al-Ashqar, who had married a Mongol woman, appealed for help from

11858-765: The Mongols. The Mongols of the Ilkhanate took Aleppo in October 1280, but Qalawun persuaded Al-Ashqar to join him, and they fought against the Mongols on 29 October 1281, in the Second Battle of Homs , which was won by the Mamluks . In 1400, the Muslim Turco-Mongol conqueror Tamurlane invaded Syria, in which he sacked Aleppo , and captured Damascus after defeating the Mamluk army. The city's inhabitants were massacred, except for

12012-520: The Syrian Army. The insurgents unified under the banner of the Free Syrian Army and fought in an increasingly organized fashion; however, the civilian component of the armed opposition lacked an organized leadership. The uprising has sectarian undertones, though neither faction in the conflict has described sectarianism as playing a major role. The opposition is dominated by Sunni Muslims, whereas

12166-451: The Syrian government, 9,815–10,146 people, including 3,430 members of the security forces, 2,805–3,140 insurgents and up to 3,600 civilians, have been killed in fighting with what they characterize as "armed terrorist groups." To escape the violence, tens of thousands of Syrian refugees have fled the country to neighboring Jordan , Iraq and Lebanon , as well to Turkey . The total official UN numbers of Syrian refugees reached 42,000 at

12320-489: The United States alone, there are approximately 2,000,000 or more "small" dams that are not included in the Army Corps of Engineers National Inventory of dams . Records of small dams are kept by state regulatory agencies and therefore information about small dams is dispersed and uneven in geographic coverage. Countries worldwide consider small hydropower plants (SHPs) important for their energy strategies, and there has been

12474-516: The World Commission on Dams also includes in the "large" category, dams which are between 5 and 15 m (16 and 49 ft) high with a reservoir capacity of more than 3 million cubic metres (2,400  acre⋅ft ). Hydropower dams can be classified as either "high-head" (greater than 30 m in height) or "low-head" (less than 30 m in height). As of 2021 , ICOLD's World Register of Dams contains 58,700 large dam records. The tallest dam in

12628-403: The arch dam, stability is obtained by a combination of arch and gravity action. If the upstream face is vertical the entire weight of the dam must be carried to the foundation by gravity, while the distribution of the normal hydrostatic pressure between vertical cantilever and arch action will depend upon the stiffness of the dam in a vertical and horizontal direction. When the upstream face

12782-517: The area back to the Ottomans. From 1864, Tanzimat reforms were applied on Ottoman Syria, carving out the provinces (vilayets) of Aleppo , Zor , Beirut and Damascus Vilayet ; Mutasarrifate of Mount Lebanon was created, as well, and soon after the Mutasarrifate of Jerusalem was given a separate status. During World War I , the Ottoman Empire entered the conflict on the side of Germany and

12936-577: The artisans, who were deported to Samarkand . Tamurlane also conducted specific massacres of the Aramean and Assyrian Christian populations, greatly reducing their numbers. By the end of the 15th century, the discovery of a sea route from Europe to the Far East ended the need for an overland trade route through Syria. In 1516, the Ottoman Empire invaded the Mamluk Sultanate of Egypt , conquering Syria, and incorporating it into its empire. The Ottoman system

13090-651: The back of the dam through a large pipe to drive a water wheel and watermill . In the 10th century, Al-Muqaddasi described several dams in Persia. He reported that one in Ahwaz was more than 910 m (3,000 ft) long, and that it had many water-wheels raising the water into aqueducts through which it flowed into reservoirs of the city. Another one, the Band-i-Amir Dam, provided irrigation for 300 villages. Shāh Abbās Arch (Persian: طاق شاه عباس), also known as Kurit Dam ,

13244-487: The bottom of the dam the central angle subtended by the face of the dam becomes smaller. Jones Falls Dam , in Canada, is a constant radius dam. In a constant-angle dam, also known as a variable radius dam, this subtended angle is kept constant and the variation in distance between the abutments at various levels is taken care of by varying the radii. Constant-radius dams are much less common than constant-angle dams. Parker Dam on

13398-402: The buttress loads are heavy. In a gravity dam, the force that holds the dam in place against the push from the water is Earth's gravity pulling down on the mass of the dam. The water presses laterally (downstream) on the dam, tending to overturn the dam by rotating about its toe (a point at the bottom downstream side of the dam). The dam's weight counteracts that force, tending to rotate the dam

13552-497: The capital Amman . This gravity dam featured an originally 9-metre-high (30 ft) and 1 m-wide (3.3 ft) stone wall, supported by a 50 m-wide (160 ft) earthen rampart. The structure is dated to 3000 BC. However, the oldest continuously operational dam is Lake Homs Dam , built in Syria between 1319-1304 BC. The Ancient Egyptian Sadd-el-Kafara Dam at Wadi Al-Garawi, about 25 km (16 mi) south of Cairo ,

13706-826: The capital of empire to Baghdad . Arabic – made official under Umayyad rule – became the dominant language, replacing Greek and Aramaic of the Byzantine era. In 887, the Egypt-based Tulunids annexed Syria from the Abbasids, and were later replaced by once the Egypt-based Ikhshidids and still later by the Hamdanids originating in Aleppo founded by Sayf al-Dawla . Sections of Syria were held by French, English, Italian and German overlords between 1098 and 1189 AD during

13860-777: The city one of the richest in the Roman empire. Eventually, in the late 3rd century AD, the Palmyrene king Odaenathus defeated the Persian emperor Shapur I and controlled the entirety of the Roman East while his successor and widow Zenobia established the Palmyrene Empire , which briefly conquered Egypt, Syria, Palestine, much of Asia Minor, Judah and Lebanon, before being finally brought under Roman control in 273 AD. The northern Mesopotamian Assyrian kingdom of Adiabene controlled areas of north east Syria between 10 AD and 117 AD, before it

14014-890: The city, most of which were halted after his death. Syria is significant in the history of Christianity ; Saulus of Tarsus, better known as the Apostle Paul , was converted on the Road to Damascus and emerged as a significant figure in the Christian Church at Antioch in ancient Syria. Muhammad 's first interaction with the people of Syria was during the Invasion of Dumatul Jandal in July 626 where he ordered his followers to invade Duma, because Muhammad received intelligence that some tribes there were involved in highway robbery and preparing to attack Medina itself. William Montgomery Watt claims that this

14168-626: The city. The masonry arch dam wall was designed by Lieutenant Percy Simpson who was influenced by the advances in dam engineering techniques made by the Royal Engineers in India . The dam cost £17,000 and was completed in 1856 as the first engineered dam built in Australia, and the second arch dam in the world built to mathematical specifications. The first such dam was opened two years earlier in France . It

14322-415: The conflict appears to have settled into a frozen state. Although roughly 30% of the country is controlled by opposition forces, heavy fighting has largely ceased and there is a growing regional trend toward normalizing relations with the regime of Bashar al-Assad. Syria lies between latitudes 32° and 38° N , and longitudes 35° and 43° E . The climate varies from the humid Mediterranean coast, through

14476-647: The construction of the Rideau Canal in Canada near modern-day Ottawa and built a series of curved masonry dams as part of the waterway system. In particular, the Jones Falls Dam , built by John Redpath , was completed in 1832 as the largest dam in North America and an engineering marvel. In order to keep the water in control during construction, two sluices , artificial channels for conducting water, were kept open in

14630-570: The control of Vichy France until the British and Free French occupied the country in the Syria-Lebanon campaign in July 1941. Continuing pressure from Syrian nationalists and the British forced the French to evacuate their troops in April 1946, leaving the country in the hands of a republican government that had been formed during the mandate. Upheaval dominated Syrian politics from independence through

14784-627: The country between 1949 and 1971. In 1958, Syria entered a brief union with Egypt , which was terminated in the 1961 coup d'état and was renamed as the Arab Republic of Syria in constitutional referendum . The 1963 coup d'état carried out by the military committee of the Ba'ath Party established a one-party state and ran Syria under emergency law from 1963 to 2011, effectively suspending constitutional protections for citizens. Internal power-struggles within Ba'athist factions caused further coups in 1966 and 1970 , which eventually resulted in

14938-469: The dam by the water reduces the lateral (horizontal) force acting on the dam. Thus, the gravitational force required by the dam is lessened, i.e., the dam does not need to be so massive. This enables thinner dams and saves resources. A barrage dam is a special kind of dam that consists of a line of large gates that can be opened or closed to control the amount of water passing the dam. The gates are set between flanking piers which are responsible for supporting

15092-533: The dam was submitted by a consortium called Six Companies, Inc. Such a large concrete structure had never been built before, and some of the techniques were unproven. The torrid summer weather and the lack of facilities near the site also presented difficulties. Nevertheless, Six Companies turned over the dam to the federal government on 1 March 1936, more than two years ahead of schedule. By 1997, there were an estimated 800,000 dams worldwide, some 40,000 of them over 15 m (49 ft) high. In 2014, scholars from

15246-605: The dam. If large enough uplift pressures are generated there is a risk of destabilizing the concrete gravity dam. On a suitable site, a gravity dam can prove to be a better alternative to other types of dams. When built on a solid foundation, the gravity dam probably represents the best-developed example of dam building. Since the fear of flood is a strong motivator in many regions, gravity dams are built in some instances where an arch dam would have been more economical. Gravity dams are classified as "solid" or "hollow" and are generally made of either concrete or masonry. The solid form

15400-407: The dam. The first was near the base of the dam on its east side. A second sluice was put in on the west side of the dam, about 20 ft (6.1 m) above the base. To make the switch from the lower to upper sluice, the outlet of Sand Lake was blocked off. Hunts Creek near the city of Parramatta , Australia , was dammed in the 1850s, to cater to the demand for water from the growing population of

15554-450: The dams' potential range and magnitude of environmental disturbances. The International Commission on Large Dams (ICOLD) defines a "large dam" as "A dam with a height of 15 m (49 ft) or greater from lowest foundation to crest or a dam between 5 m (16 ft) metres and 15 metres impounding more than 3 million cubic metres (2,400  acre⋅ft )". "Major dams" are over 150 m (490 ft) in height. The Report of

15708-472: The east, and the West Semitic speaking Arameans who subsumed the earlier Amorites. They too were subjugated by Assyria and the Hittites for centuries. The Egyptians fought the Hittites for control over western Syria; the fighting reached its zenith in 1274 BC with the Battle of Kadesh . The west remained part of the Hittite empire until its destruction c. 1200 BC, while eastern Syria largely became part of

15862-686: The first being Elagabalus and the second, his cousin Alexander Severus . Another Roman emperor who was a Syrian was Philip the Arab (Marcus Julius Philippus), who was born in Roman Arabia . He was emperor from 244 to 249, and ruled briefly during the Crisis of the Third Century . During his reign, he focused on his home town of Philippopolis (modern day Shahba ) and began many construction projects to improve

16016-493: The first large-scale arch dams. Three pioneering arch dams were built around the British Empire in the early 19th century. Henry Russel of the Royal Engineers oversaw the construction of the Mir Alam dam in 1804 to supply water to the city of Hyderabad (it is still in use today). It had a height of 12 m (39 ft) and consisted of 21 arches of variable span. In the 1820s and 30s, Lieutenant-Colonel John By supervised

16170-710: The first was the Roman-built dam bridge in Dezful , which could raise water 50 cubits (c. 23 m) to supply the town. Also diversion dams were known. Milling dams were introduced which the Muslim engineers called the Pul-i-Bulaiti . The first was built at Shustar on the River Karun , Iran, and many of these were later built in other parts of the Islamic world . Water was conducted from

16324-534: The force of water. A fixed-crest dam is a concrete barrier across a river. Fixed-crest dams are designed to maintain depth in the channel for navigation. They pose risks to boaters who may travel over them, as they are hard to spot from the water and create induced currents that are difficult to escape. There is variability, both worldwide and within individual countries, such as in the United States, in how dams of different sizes are categorized. Dam size influences construction, repair, and removal costs and affects

16478-608: The government's response to the crisis, but sent an observer mission in December 2011, as part of its proposal for peaceful resolution of the crisis. The latest attempts to resolve the crisis has been made through the appointment of Kofi Annan, as a special envoy to resolve the Syrian crisis in the Middle East. Some analysts however have posited the partitioning the region into a Sunnite east, Kurdish north and Shiite / Alawite west. Twelve years into Syria's devastating civil war,

16632-441: The kidnapping of Iranian nationals. The UN Commission of Inquiry has also documented abuses of this nature in its February 2012 report, which also includes documentation that indicates rebel forces have been responsible for displacement of civilians. Being ranked 8th last on the 2024 Global Peace Index and 4th worst in the 2024 Fragile States Index , Syria is one of the most dangerous places for journalists . Freedom of press

16786-504: The largest Arab state to emerge from the formerly Ottoman -ruled Syrian provinces. It gained de jure independence as a parliamentary republic in 1945 when the new Republic became a founding member of the United Nations, an act which legally ended the former French mandate. French troops departed in April 1946, granting de facto independence. The post-independence period was tumultuous, with multiple military coup attempts shaking

16940-468: The largest in the world. Several sources indicate that the name Syria is derived from the 8th century BC Luwian term "Sura/i", and the derivative ancient Greek name: Σύριοι , Sýrioi , or Σύροι , Sýroi , both of which originally derived from Aššūr ( Assyria ) in northern Mesopotamia (present-day Iraq). However, from the Seleucid Empire (323–150 BC), this term was also applied to

17094-559: The late 1960s. In May 1948, Syrian forces invaded Palestine , together with other Arab states, and immediately attacked Jewish settlements. Their president Shukri al-Quwwatli instructed his troops in the front, "to destroy the Zionists". The Invasion purpose was to prevent the establishment of the State of Israel . Toward this end, the Syrian government engaged in an active process of recruiting former Nazis , including several former members of

17248-826: The leading government figures are Alawites , affiliated with Shia Islam. As a result, the opposition is winning support from the Sunni Muslim states, whereas the government is publicly supported by the Shia dominated Iran and the Lebanese Hezbollah . According to various sources, including the United Nations , up to 13,470–19,220 people have been killed, of which about half were civilians, but also including 6,035–6,570 armed combatants from both sides and up to 1,400 opposition protesters. Many more have been injured, and tens of thousands of protesters have been imprisoned. According to

17402-625: The main stream of the Kaveri River in Tamil Nadu , South India . The basic structure dates to the 2nd century AD and is considered one of the oldest water diversion or water regulating structures still in use. The purpose of the dam was to divert the waters of the Kaveri across the fertile delta region for irrigation via canals. Du Jiang Yan is the oldest surviving irrigation system in China that included

17556-521: The midst of World War I , two Allied diplomats (Frenchman François Georges-Picot and Briton Mark Sykes ) secretly agreed on the post-war division of the Ottoman Empire into respective zones of influence in the Sykes-Picot Agreement of 1916. Initially, the two territories were separated by a border that ran in an almost straight line from Jordan to Iran . However, the discovery of oil in

17710-661: The names of many old cities, such as Amsterdam and Rotterdam . Ancient dams were built in Mesopotamia and the Middle East for water control. The earliest known dam is the Jawa Dam in Jordan , dating to 3,000 BC. Egyptians also built dams, such as Sadd-el-Kafara Dam for flood control. In modern-day India, Dholavira had an intricate water-management system with 16 reservoirs and dams. The Great Dam of Marib in Yemen, built between 1750 and 1700 BC,

17864-690: The northeastern city of al-Qamishli . Signs of rioting were seen in the cities of Qamishli and Hasakeh . In 2005, Syria ended its military presence in Lebanon. Assassination of Rafic Hariri in 2005 led to international condemnation and triggered a popular Intifada in Lebanon , known as "the Cedar Revolution" which forced the Assad regime to end its 29-year old of military occupation in Lebanon . On 6 September 2007, foreign jet fighters, suspected as Israeli, reportedly carried out Operation Orchard against

18018-683: The northern east parts of Syria while the rest of the region was dominated by the Amorites . Syria was called the Land of the Amurru (Amorites) by their Assyro-Babylonian neighbors. The Northwest Semitic language of the Amorites is the earliest attested of the Canaanite languages . Mari reemerged during this period, and saw renewed prosperity until conquered by Hammurabi of Babylon. Ugarit also arose during this time, circa 1800 BC, close to modern Latakia . Ugaritic

18172-562: The original pan-Arab Ba'ath Party : one Iraqi-led ba'ath movement (ruled Iraq from 1968 to 2003) and one Syrian-led ba'ath movement was established. In the first half of 1967, a low-key state of war existed between Syria and Israel . Conflict over Israeli cultivation of land in the Demilitarized Zone led to 7 April pre-war aerial clashes between Israel and Syria. When the Six-Day War broke out between Egypt and Israel, Syria joined

18326-518: The other basic dam designs which had been unknown until then. These include arch-gravity dams , arch dams , buttress dams and multiple arch buttress dams , all of which were known and employed by the 2nd century AD (see List of Roman dams ). Roman workforces also were the first to build dam bridges, such as the Bridge of Valerian in Iran. In Iran , bridge dams such as the Band-e Kaisar were used to provide hydropower through water wheels , which often powered water-raising mechanisms. One of

18480-429: The other way about its toe. The designer ensures that the dam is heavy enough that the dam's weight wins that contest. In engineering terms, that is true whenever the resultant of the forces of gravity acting on the dam and water pressure on the dam acts in a line that passes upstream of the toe of the dam. The designer tries to shape the dam so if one were to consider the part of the dam above any particular height to be

18634-595: The overthrow of his government, and an end to nearly five decades of Ba’ath Party rule . Since spring 2011, the Syrian government deployed the Syrian Army to quell the uprising, and several cities were besieged, though the unrest continued. According to some witnesses, soldiers, who refused to open fire on civilians, were summarily executed by the Syrian Army. The Syrian government denied reports of defections, and blamed armed gangs for causing trouble. Since early autumn 2011, civilians and army defectors began forming fighting units, which began an insurgency campaign against

18788-432: The principles behind dam design. In France, J. Augustin Tortene de Sazilly explained the mechanics of vertically faced masonry gravity dams, and Zola's dam was the first to be built on the basis of these principles. The era of large dams was initiated with the construction of the Aswan Low Dam in Egypt in 1902, a gravity masonry buttress dam on the Nile River . Following their 1882 invasion and occupation of Egypt ,

18942-463: The region of Mosul just before the end of the war led to yet another negotiation with France in 1918 to cede this region to the British zone of influence, which was to become Iraq. The fate of the intermediate province of Zor was left unclear; its occupation by Arab nationalists resulted in its attachment to Syria . This border was recognized internationally when Syria became a League of Nations mandate in 1920 and has not changed to date. In 1920,

19096-403: The region which had lasted two decades. Syria prospered under Roman rule, being strategically located on the silk road, which gave it massive wealth and importance, making it the battleground for the rivaling Romans and Persians. Palmyra , a rich and sometimes powerful native Aramaic -speaking kingdom arose in northern Syria in the 2nd century; the Palmyrene established a trade network that made

19250-420: The same year. Shishakli eventually abolished multipartyism altogether, but was himself overthrown in a 1954 coup and the parliamentary system was restored. However, by this time, power was increasingly concentrated in the military and security establishment. The weakness of Parliamentary institutions and the mismanagement of the economy led to unrest and the influence of Nasserism and other ideologies. There

19404-559: The seizure of power by Hafiz al-Assad . He effectively established an Alawi minority rule to consolidate power within his family. After Assad's death , his son Bashar al-Assad inherited the presidency in 2000. Since 2011, Syria has been embroiled in a multi-sided civil war , with involvement of different countries . Three political entities – the Syrian Interim Government , Syrian Salvation Government , and Rojava – have emerged in Syrian territory to challenge Assad's rule. A country of fertile plains, high mountains, and deserts, Syria

19558-487: The state of New Mexico defines a jurisdictional dam as 25 feet or greater in height and storing more than 15 acre-feet or a dam that stores 50 acre-feet or greater and is six feet or more in height (section 72-5-32 NMSA), suggesting that dams that do not meet these requirements are non-jurisdictional. Most US dams, 2.41 million of a total of 2.5 million dams, are not under the jurisdiction of any public agency (i.e., they are non-jurisdictional), nor are they listed on

19712-448: The strength of Syrian military technology, as it seemed feasible that Syria might attempt to retake İskenderun . Only heated debates in the United Nations lessened the threat of war. On 1 February 1958, Syrian President Shukri al-Quwatli and Egypt's Nasser announced the merging of Egypt and Syria, creating the United Arab Republic , and all Syrian political parties, as well as the communists therein, ceased overt activities. Meanwhile,

19866-694: The time, while unofficial number stood at as many as 130,000. UNICEF reported that over 500 children have been killed, Another 400 children have been reportedly arrested and tortured in Syrian prisons. Both claims have been contested by the Syrian government. Additionally, over 600 detainees and political prisoners have died under torture. Human Rights Watch accused the government and Shabiha of using civilians as human shields when they advanced on opposition held-areas. Anti-government rebels have been accused of human rights abuses as well, including torture, kidnapping, unlawful detention and execution of civilians, Shabiha and soldiers. HRW also expressed concern at

20020-409: The war and attacked Israel as well. In the final days of the war, Israel turned its attention to Syria, capturing two-thirds of the Golan Heights in under 48 hours. The defeat caused a split between Jadid and Assad over what steps to take next. Disagreement developed between Jadid, who controlled the party apparatus, and Assad, who controlled the military. The 1970 retreat of Syrian forces sent to aid

20174-406: The water level and to prevent the sea from entering the marshlands. Such dams often marked the beginning of a town or city because it was easy to cross the river at such a place, and often influenced Dutch place names. The present Dutch capital, Amsterdam (old name Amstelredam ), started with a dam on the river Amstel in the late 12th century, and Rotterdam began with a dam on the river Rotte ,

20328-576: The water load, and are often used to control and stabilize water flow for irrigation systems. An example of this type of dam is the now-decommissioned Red Bluff Diversion Dam on the Sacramento River near Red Bluff, California . Barrages that are built at the mouths of rivers or lagoons to prevent tidal incursions or use the tidal flow for tidal power are known as tidal barrages . Embankment dams are made of compacted earth, and are of two main types: rock-fill and earth-fill. Like concrete gravity dams, embankment dams rely on their weight to hold back

20482-489: The world . Yamhad (modern Aleppo ) dominated northern Syria for two centuries, although Eastern Syria was occupied in the 19th and 18th centuries BC by the Old Assyrian Empire ruled by the Amorite Dynasty of Shamshi-Adad I , and by the Babylonian Empire which was founded by Amorites. Yamhad was described in the tablets of Mari as the mightiest state in the near east and as having more vassals than Hammurabi of Babylon. Yamhad imposed its authority over Alalakh , Qatna ,

20636-530: The world is the 305 m-high (1,001 ft) Jinping-I Dam in China . As with large dams, small dams have multiple uses, such as, but not limited to, hydropower production, flood protection, and water storage. Small dams can be particularly useful on farms to capture runoff for later use, for example, during the dry season. Small scale dams have the potential to generate benefits without displacing people as well, and small, decentralised hydroelectric dams can aid rural development in developing countries. In

20790-411: Was 102 m (335 ft) long at its base and 87 m (285 ft) wide. The structure was built around 2800 or 2600 BC as a diversion dam for flood control, but was destroyed by heavy rain during construction or shortly afterwards. During the Twelfth Dynasty in the 19th century BC, the Pharaohs Senosert III, Amenemhat III , and Amenemhat IV dug a canal 16 km (9.9 mi) long linking

20944-442: Was a Semitic language loosely related to the Canaanite languages, and developed the Ugaritic alphabet , considered to be the world's earliest known alphabet. The Ugaritic kingdom survived until its destruction at the hands of the marauding Indo-European Sea Peoples in the 12th century BC in what was known as the Late Bronze Age Collapse . Aleppo and the capital city Damascus are among the oldest continuously inhabited cities in

21098-420: Was already envisaging something of the expansion which took place after his death", and that the rapid march of his troops must have "impressed all those who heard of it". William Muir also believes that the expedition was important as Muhammad followed by 1000 men reached the confines of Syria, where distant tribes had now learnt his name, while the political horizon of Muhammad was extended. By AD 640, Syria

21252-424: Was also a synthesis between the Semitic Arameans and the remnants of the Indo-European Hittites , with the founding of a number of Syro-Hittite states centered in north central Aram (Syria) and south central Asia Minor (modern Turkey), including Palistin , Carchemish and Sam'al . A Canaanite group known as the Phoenicians came to dominate the coasts of Syria, (and also Lebanon and northern Palestine ) from

21406-602: Was an engineering wonder, and Eflatun Pinar, a Hittite dam and spring temple in Turkey, dates to the 15th and 13th centuries BC. The Kallanai Dam in South India, built in the 2nd century AD, is one of the oldest water regulating structures still in use. Roman engineers built dams with advanced techniques and materials, such as hydraulic mortar and Roman concrete, which allowed for larger structures. They introduced reservoir dams, arch-gravity dams, arch dams, buttress dams, and multiple arch buttress dams. In Iran, bridge dams were used for hydropower and water-raising mechanisms. During

21560-453: Was built. The system included 16 reservoirs, dams and various channels for collecting water and storing it. One of the engineering wonders of the ancient world was the Great Dam of Marib in Yemen . Initiated sometime between 1750 and 1700 BC, it was made of packed earth – triangular in cross-section, 580 m (1,900 ft) in length and originally 4 m (13 ft) high – running between two groups of rocks on either side, to which it

21714-417: Was conquered by the Arab Rashidun army led by Khalid ibn al-Walid . In the mid-7th century, the Umayyad dynasty , then rulers of the empire, placed the capital of the empire in Damascus. The country's power declined during later Umayyad rule; this was mainly due to totalitarianism, corruption and the resulting revolutions. The Umayyad dynasty was then overthrown in 750 by the Abbasid dynasty , which moved

21868-399: Was conquered by Rome. The Aramaic language has been found as far afield as Hadrian's Wall in Ancient Britain, with an inscription written by a Palmyrene emigrant at the site of Fort Arbeia . Control of Syria eventually passed from the Romans to the Byzantines , with the split in the Roman Empire. The largely Aramaic -speaking population of Syria during the heyday of the Byzantine Empire

22022-433: Was discovered at the field of Jbessa in 1940. Syria contains four terrestrial ecoregions: Syrian xeric grasslands and shrublands , Eastern Mediterranean conifer-sclerophyllous-broadleaf forests , Southern Anatolian montane conifer and deciduous forests , and Mesopotamian shrub desert . The country had a 2019 Forest Landscape Integrity Index mean score of 3.64/10, ranking it 144th globally out of 172 countries. Syria

22176-503: Was elected president in an election in which he ran unopposed. His election saw the birth of the Damascus Spring and hopes of reform, but by autumn 2001, the authorities had suppressed the movement, imprisoning some of its leading intellectuals. Instead, reforms have been limited to some market reforms. On 5 October 2003, Israel bombed a site near Damascus , claiming it was a terrorist training facility for members of Islamic Jihad . In March 2004, Syrian Kurds and Arabs clashed in

22330-465: Was eventually pardoned. He returned to Syria in 1937 after the signing of the Syrian-French Treaty. Syria and France negotiated a treaty of independence in September 1936, and Hashim al-Atassi was the first president to be elected under the first incarnation of the modern republic of Syria. However, the treaty never came into force because the French Legislature refused to ratify it. With the fall of France in 1940 during World War II , Syria came under

22484-485: Was fertile ground for various Arab nationalist , Syrian nationalist , and socialist movements, which represented disaffected elements of society. Notably included were religious minorities, who demanded radical reform. In November 1956, as a direct result of the Suez Crisis , Syria signed a pact with the Soviet Union . This gave a foothold for Communist influence within the government in exchange for military equipment. Turkey then became worried about this increase in

22638-434: Was linked by substantial stonework. Repairs were carried out during various periods, most importantly around 750 BC, and 250 years later the dam height was increased to 7 m (23 ft). After the end of the Kingdom of Saba , the dam fell under the control of the Ḥimyarites (c. 115 BC) who undertook further improvements, creating a structure 14 m (46 ft) high, with five spillways, two masonry-reinforced sluices,

22792-402: Was not burdensome to Syrians because the Turks respected Arabic as the language of the Quran , and accepted the mantle of defenders of the faith. Damascus was made the major entrepot for Mecca , and as such it acquired a holy character to Muslims, because of the beneficial results of the countless pilgrims who passed through on the hajj, the pilgrimage to Mecca. Ottoman administration followed

22946-400: Was one of the most ancient on earth, perhaps preceded by only that of Mesopotamia . The earliest recorded indigenous civilization in the region was the Kingdom of Ebla near present-day Idlib , northern Syria. Ebla appears to have been founded around 3500 BC, and gradually built its fortune through trade with the Mesopotamian states of Sumer , Assyria , and Akkad , as well as with

23100-404: Was possibly the world's first concrete arch dam. Designed by Henry Charles Stanley in 1880 with an overflow spillway and a special water outlet, it was eventually heightened to 10 m (33 ft). In the latter half of the nineteenth century, significant advances in the scientific theory of masonry dam design were made. This transformed dam design from an art based on empirical methodology to

23254-422: Was probably not exceeded again until the 19th century. Prior to the Arab Islamic Conquest in the 7th century AD, the bulk of the population were Arameans , but Syria was also home to Greek and Roman ruling classes, Assyrians still dwelt in the north east, Phoenicians along the coasts, and Jewish and Armenian communities were also extant in major cities, with Nabateans and pre-Islamic Arabs such as

23408-461: Was the first French arch dam of the industrial era , and it was built by François Zola in the municipality of Aix-en-Provence to improve the supply of water after the 1832 cholera outbreak devastated the area. After royal approval was granted in 1844, the dam was constructed over the following decade. Its construction was carried out on the basis of the mathematical results of scientific stress analysis. The 75-miles dam near Warwick , Australia,

23562-445: Was the largest masonry dam in the world. The Hoover Dam is a massive concrete arch-gravity dam , constructed in the Black Canyon of the Colorado River , on the border between the US states of Arizona and Nevada between 1931 and 1936 during the Great Depression . In 1928, Congress authorized the project to build a dam that would control floods, provide irrigation water and produce hydroelectric power . The winning bid to build

23716-409: Was the most significant expedition Muhammad ordered at the time, even though it received little notice in the primary sources. Dumat Al-Jandal was 800 kilometres (500 mi) from Medina, and Watt says that there was no immediate threat to Muhammad, other than the possibility that his communications to Syria and supplies to Medina would be interrupted. Watt says "It is tempting to suppose that Muhammad

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