Tigris–Euphrates river system
River system in the Middle East
The Tigris–Euphrates river system is a large river system in Western Asia that flows into the Persian Gulf. Its primary rivers are the Tigris and Euphrates, along with smaller tributaries.
From their sources and upper courses in the Armenian highlands of eastern Turkey, being Lake Hazar for the Tigris and Karasu along with the Murat River for the Euphrates, the two rivers descend through valleys and gorges to the uplands of Syria and northern Iraq and then to the alluvial plain of central Iraq. Other tributaries join the Tigris from sources in the Zagros Mountains to the east. The rivers flow in a south-easterly direction through the central plain and combine at Al-Qurnah to form the Shatt al-Arab and discharge into the Persian Gulf. The rivers and their tributaries drain an area of , including almost the entire area of Iraq as well as portions of Turkey, Syria, Iran and Kuwait.
The region has historical importance as part of the Fertile Crescent, where Mesopotamian civilization first emerged.
Geography.
The Tigris–Euphrates Basin is shared between Turkey, Syria, Iraq, Iran, and Kuwait. Many tributaries of the Tigris river originate in Iran, and the Shatt al-Arab, formed by the confluence of the Euphrates and Tigris rivers, makes up a portion of the Iran–Iraq border, with Kuwait's Bubiyan Island being part of its delta. Since the 1960s and in the 1970s, when Turkey began the GAP project in earnest, water disputes have regularly occurred in addition to the associated dam's effects on the environment. In addition, Syrian and Iranian dam construction has also contributed to political tension within the basin, particularly during drought.
The ecoregion is characterized by two large rivers, the Tigris and Euphrates. The high mountains in the upper watershed receive more rain and snow than the lower watershed, which has a hot and arid subtropical climate. Annual snow melt from the mountains brings spring floods, and sustains permanent and seasonal marshes in the lowlands.
The plain between the two rivers is known as Mesopotamia. As part of the larger Fertile Crescent, it saw the earliest emergence of literate urban civilization in the Uruk period. For this reason, it is often described as a "Cradle of Civilization".
There is a large floodplain in the lower basin where the Euphrates, Tigris, and Karun rivers converge to create the Mesopotamian Marshes, which include permanent lakes, marshes, and riparian forests. The hydrology of these vast marshes is extremely important to the ecology of the entire upper Persian Gulf.
History.
Some of the first civilizations emerged from the confluence of the Tigris and Euphrates rivers. From ancient times empires arose and fell in the river basin, including Sumer, Akkad, Babylonia, Assyria, and the Abbasid Caliphate. Being part of the Fertile Crescent, the river system is recognized as the site of one of the world's first agricultural centers, with archeological sites containing preserved grain dating up to 12,500 years ago. The river system was used by major cities including Ur and Babylon to promote trade and the sharing of cultures. As a result of its invention of the qanat system thousands of years ago which uses gravity to transport water through subterranean tunnels, Iran has a history as an agricultural nation, despite its aridity.
Ecology.
The most abundant fishes are species of barbs ("Barbus"), some of which can reach up to two meters in length. Some species have been important food sources for residents for thousands of years. Specifically, the Mangar fish has been harvested for food in the Tigris-Euphrates basin. Many species move seasonally between the river and the marshes for spawning, feeding, and overwintering. The Hilsa shad ("Tenualosa ilisha") is an important food fish that lives in the coastal waters and spawns in the lower reaches of the basin. Other ocean species occasionally visit the lower reaches of the rivers; bull sharks ("Carcharhinus leucas") used to swim up the Tigris as far as Baghdad.
Endemic fish species in the lower basin include "Glyptothorax steindachneri" and "Hemigrammocapoeta elegans", and as well as two cave fishes, "Caecocypris basimi" and the Iraq blind barb ("Typhlogarra widdowsoni"), from a cave habitat near Haditha on the Euphrates.
One-third of the fish species in the upper watersheds are endemic, including species of "Aphanius, Glyptothorax, Cobitis, Orthrias", and "Schistura". Two blind fish species, the Iran cave barb ("Iranocypris typhlops") and the Zagros blind loach ("Eidinemacheilus smithi"), are endemic to cave systems in Iran's upper Karun River watershed. The Batman River loach ("Paraschistura chrysicristinae") is a Critically Endangered fish species endemic to the Batman and Ambar rivers, Turkish tributaries of the Tigris. The species is endangered by drought, habitat destruction, and habitat fragmentation from the construction of the Batman Dam. It had not been observed since 1974 and was feared extinct until a 2021 expedition netted 14 fish living above the Batman Dam.
Mesopotamian Marshes.
The Mesopotamian Marshes in southern Iraq were historically the largest wetland ecosystem of Western Eurasia. The aquatic vegetation includes reeds, rushes, and papyrus, which support numerous species. Areas around the Tigris and the Euphrates are very fertile. Marshy land is home to water birds, some stopping here while migrating, and some spending the winter in these marshes living off the lizards, snakes, frogs, and fish. Other animals found in these marshes are water buffalo, two endemic rodent species, antelopes and gazelles and small animals such as the jerboa and several other mammals. The wetland birds Basra reed warbler ("Acrocephalus griseldis") and Iraq babbler ("Argya altirostris") are endemic to the Mesopotamian Marshes. The Basra reed warbler is endangered. Another wetland endemic species, Bunn's short-tailed bandicoot rat ("Nesokia bunnii"), is possibly extinct.
Their drainage began in the 1950s, to reclaim land for agriculture and oil exploration. Saddam Hussein extended this work in the late 1980s and early 1990s, as part of ecological warfare against the Marsh Arabs, a rebellious group of people in Baathist Iraq. However, with the breaching of the dikes by local communities after the 2003 invasion of Iraq and the ending of a four-year drought that same year, the process has been reversed and the marshes have experienced a substantial rate of recovery. The permanent wetlands now cover more than 50% of pre-1970s levels, with a remarkable regrowth of the Hammar and Hawizeh Marshes and some recovery of the Central Marshes.
Ecological threats.
Iraq suffers from desertification and soil salination due in large part to thousands of years of agricultural activity. Water and plant life are sparse. Saddam Hussein's government water-control projects drained the inhabited marsh areas east of An Nasiriyah by drying up or diverting streams and rivers. Shi'a Muslims were displaced under the Ba'athist regime. The destruction of the natural habitat poses serious threats to the area's wildlife populations. There are also inadequate supplies of potable water.
The marshlands were an extensive natural wetland ecosystem, which developed over thousands of years in the Tigris–Euphrates basin and once covered 15–20,000 square kilometers. In the 1980s, this ecoregion was put in grave danger during the Iran–Iraq War. After the 1991 Gulf War, Iraq's President Saddam Hussein initiated a drainage project on these marshes, leading to degradation of ecosystem services that caused economic and social issues for civilians. The Mesopotamian Marshes, which were inhabited by the Marsh Arabs, were almost completely drained. Although they had started to recover after the fall of Ba'athist Iraq in 2003, drought, intensive dam construction and irrigation schemes upstream have caused them to dry up once more. According to the United Nations Environmental Program and the AMAR Charitable Foundation, between 84% and 90% of the marshes have been destroyed since the 1970s. In 1994, 60 percent of the wetlands were destroyed by Hussein's regime – drained to permit military access and greater political control of the native Marsh Arabs. Canals, dykes and dams were built routing the water of the Tigris and Euphrates Rivers around the marshes, instead of allowing water to move slowly through the marshland. After part of the Euphrates was dried up due to re-routing its water to the sea, a dam was built so water could not back up from the Tigris and sustain the former marshland. Some marshlands were burned and pipes buried underground helped to carry away water for quicker drying.
Riparian entities have constructed dams along the Tigris–Euphrates river system as a method of water management in response to droughts. Turkey, for example, is in control of an estimated 45% of the system's water sources due to its dam constructions for water quantity and hydroelectric power.
The drying of the marshes led to the disappearance of the salt-tolerant vegetation; the plankton rich waters that fertilized surrounding soils; 52 native fish species; the wild boar, red fox, buffalo and water birds of the marsh habitat.
Climate change also affects the environmental and social well-being. Climate change and human interaction have directly impacted the Tigris–Euphrates river system, leading to a negative trend in water storage capabilities in the river basin. The combination of diminishing water levels in the Tigris–Euphrates river system and rising sea levels indicates the potential for rapid seawater intrusion in the river basin. This is especially concerning as the demand for clean water increases while the water supply decreases. Currently, the Middle East and North Africa are acknowledged as the most water scarce region in the world, with 61% of the population living in areas with high or very high water stress. As climate change worsens and population grows, water scarcity in the region is expected to worsen with 100% of people living in the Middle East and North Africa living in areas with high water stress by 2050.
Water dispute.
The issue of water rights became a point of contention for Iraq, Turkey and Syria beginning in the 1960s when Turkey implemented a public-works project (the GAP project) aimed at harvesting the water from the Tigris and Euphrates rivers through the construction of 22 dams, for irrigation and hydroelectric energy purposes. Although the water dispute between Turkey and Syria was more problematic, the GAP project was also perceived as a threat by Iraq. In 1983, the Joint Technical Committee (JTC) was established to solve ongoing data controversies between Turkey, Syria, and Iraq but stopped meeting in the early 1990s after only passing two bilateral agreements. The tension between Turkey and Iraq about the issue was increased by the effect of Syria and Turkey's participation in the UN embargo against Iraq following the Gulf War. However, the issue had never become as significant as the water dispute between Turkey and Syria.
The 2008 drought in Iraq sparked new negotiations between Iraq and Turkey over trans-boundary river flows. Although the drought affected Turkey, Syria and Iran as well, Iraq complained regularly about reduced water flows. Iraq particularly complained about the Euphrates River because of the large number of dams on the river. Turkey agreed to increase the flow several times, beyond its means in order to supply Iraq with water. Iraq has seen significant declines in water storage and crop yields because of the drought. To make matters worse, Iraq's water infrastructure has suffered from years of conflict and neglect.
In 2008, Turkey, Iraq and Syria agreed to restart the Joint Trilateral Committee on water for the three nations for better water resources management. Turkey, Iraq and Syria signed a memorandum of understanding on September 3, 2009, in order to strengthen communication within the Tigris–Euphrates Basin and to develop joint water-flow-monitoring stations. On September 19, 2009, Turkey formally agreed to increase the flow of the Euphrates River to 450 to 500 m3/s, but only until October 20, 2009. In exchange, Iraq agreed to trade petroleum with Turkey and help curb Kurdish militant activity in their border region. One of Turkey's last large GAP dams on the Tigris – the Ilisu Dam – is strongly opposed by Iraq and is the source of political strife. The Southeastern Anatolia Project (Turkish acronym: GAP) continues to be a source of tension in the region. GAP is a massive hydroelectric project, consisting of 21 dams and 19 hydroelectric facilities. In 2020, Iraqi authorities complained that the Ilısu Dam had decreased the Tigris river inflows and caused water shortages in Iraqi plains.
References.
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Euphrates
River in Turkey, Iraq, and Syria
The Euphrates ( ; see below) is the longest and one of the most historically important rivers of Western Asia. Together with the Tigris, it is one of the two defining rivers of Mesopotamia (lit. 'the land between the rivers'). Originating in Turkey, the Euphrates flows through Syria and Iraq to join the Tigris in the Shatt al-Arab in Iraq, which empties into the Persian Gulf.
The Euphrates is the fifteenth-longest river in Asia and the longest in Western Asia, at about , with a drainage area of that covers six countries.
Etymology.
The term "Euphrates" derives from the Greek "Euphrátēs" (), adapted from , itself from . The Elamite name is ultimately derived from cuneiform 𒌓𒄒𒉣; read as "Buranun" in Sumerian and "Purattu" in Akkadian; many cuneiform signs have a Sumerian pronunciation and an Akkadian pronunciation, taken from a Sumerian word and an Akkadian word that mean the same. The Akkadian "Purattu" has been perpetuated in Semitic languages (cf. "al-Furāt"; "Pǝrāṯ", "Pǝrāṯ") and in other nearby languages of the time (cf. Hurrian "Puranti", Sabarian "Uruttu"). The Elamite, Akkadian, and possibly Sumerian forms are suggested to be from an unrecorded substrate language. Tamaz V. Gamkrelidze and Vyacheslav Ivanov suggest the proto-Sumerian "*burudu" "copper" (Sumerian "urudu") as an origin, with an explanation that Euphrates was the river by which copper ore was transported in rafts, since Mesopotamia was the center of copper metallurgy during the period.
The Euphrates is called "Yeprat" in Armenian (), "Perat" in modern Hebrew (), in Turkish and in Kurdish. The Mandaic name is (), and is often mentioned as (pronounced ) in Mandaean scriptures such as the "Ginza Rabba". In Mandaean scriptures, the Euphrates is considered to be the earthly manifestation of the heavenly yardna or flowing river (similar to the Yazidi concept of Lalish being the earthly manifestation of its heavenly counterpart, or the ‘Sacred House’ Kaaba in Mecca being the earthly manifestation of the heavenly Al-Bayt Al-Mamur).
The earliest references to the Euphrates come from cuneiform texts found in Shuruppak and pre-Sargonic Nippur in southern Iraq and date to the mid-3rd millennium BCE. In these texts, written in Sumerian, the Euphrates is called "Buranuna" (logographic: UD.KIB.NUN). The name could also be written KIB.NUN.(NA) or dKIB.NUN, with the prefix "d" indicating that the river was a divinity. In Sumerian, the name of the city of Sippar in modern-day Iraq was also written UD.KIB.NUN, indicating a historically strong relationship between the city and the river.
Course.
The Euphrates is the longest river of Western Asia. It emerges from the confluence of the Kara Su or Western Euphrates () and the Murat Su or Eastern Euphrates () upstream from the town of Keban in southeastern Turkey. Daoudy and Frenken put the length of the Euphrates from the source of the Murat River to the confluence with the Tigris at , of which is in Turkey, in Syria and in Iraq. The same figures are given by Isaev and Mikhailova. The length of the Shatt al-Arab, which connects the Euphrates and the Tigris with the Persian Gulf, is given by various sources as .
Both the Kara Su and the Murat Su rise northwest from Lake Van at elevations of and amsl, respectively. At the location of the Keban Dam, the two rivers, now combined into the Euphrates, have dropped to an elevation of amsl. From Keban to the Syrian–Turkish border, the river drops another over a distance of less than . Once the Euphrates enters the Upper Mesopotamian plains, its grade drops significantly; within Syria the river falls while over the last stretch between Hīt and the Shatt al-Arab the river drops only .
Discharge.
The Euphrates receives most of its water in the form of rainfall and melting snow, resulting in peak volumes during the months April through May. Discharge in these two months accounts for 36 percent of the total annual discharge of the Euphrates, or even 60–70 percent according to one source, while low runoff occurs in summer and autumn. The average natural annual flow of the Euphrates has been determined from early- and mid-twentieth century records as at Keban, at Hīt and at Hindiya. However, these averages mask the high inter-annual variability in discharge; at Birecik, just north of the Syro–Turkish border, annual discharges have been measured that ranged from a low volume of in 1961 to a high of in 1963.
The discharge regime of the Euphrates has changed dramatically since the construction of the first dams in the 1970s. Data on Euphrates discharge collected after 1990 show the impact of the construction of the numerous dams in the Euphrates and of the increased withdrawal of water for irrigation. Average discharge at Hīt after 1990 has dropped to per second ( per year). The seasonal variability has equally changed. The pre-1990 peak volume recorded at Hīt was per second, while after 1990 it is only per second. The minimum volume at Hīt remained relatively unchanged, rising from per second before 1990 to per second afterward.
Tributaries.
In Syria, three rivers add their water to the Euphrates; the Sajur, the Balikh and the Khabur. These rivers rise in the foothills of the Taurus Mountains along the Syro–Turkish border and add comparatively little water to the Euphrates. The Sajur is the smallest of these tributaries; emerging from two streams near Gaziantep and draining the plain around Manbij before emptying into the reservoir of the Tishrin Dam. The Balikh receives most of its water from a karstic spring near 'Ayn al-'Arus and flows due south until it reaches the Euphrates at the city of Raqqa. In terms of length, drainage basin and discharge, the Khabur is the largest of these three. Its main karstic springs are located around Ra's al-'Ayn, from where the Khabur flows southeast past Al-Hasakah, where the river turns south and drains into the Euphrates near Busayrah. Once the Euphrates enters Iraq, there are no more natural tributaries to the Euphrates, although canals connecting the Euphrates basin with the Tigris basin exist.
Drainage basin.
The drainage basins of the Kara Su and the Murat River cover an area of and , respectively. Estimates of the area of the Euphrates drainage basin vary widely; from a low to a high . Recent estimates put the basin area at , and . The greater part of the Euphrates basin is located in Turkey, Syria, and Iraq. According to both Daoudy and Frenken, Turkey's share is 28 percent, Syria's is 17 percent and that of Iraq is 40 percent. Isaev and Mikhailova estimate the percentages of the drainage basin lying within Turkey, Syria and Iraq at 33, 20 and 47 percent respectively. Some sources estimate that approximately 15 percent of the drainage basin is located within Saudi Arabia, while a small part falls inside the borders of Kuwait. Finally, some sources also include Jordan in the drainage basin of the Euphrates; a small part of the eastern desert () drains toward the east rather than to the west.
Climate change.
In 2021, the Iraqi Ministry of Water Resources reported that the Euphrates river could dry out by 2040 due to climate change and droughts.
Natural history.
The Euphrates flows through a number of distinct vegetation zones. Although millennia-long human occupation in most parts of the Euphrates basin has significantly degraded the landscape, patches of original vegetation remain. The steady drop in annual rainfall from the sources of the Euphrates toward the Persian Gulf is a strong determinant for the vegetation that can be supported. In its upper reaches the Euphrates flows through the mountains of Southeast Turkey and their southern foothills which support a xeric woodland. Plant species in the moister parts of this zone include various oaks, pistachio trees, and "Rosaceae" (rose/plum family). The drier parts of the xeric woodland zone supports less dense oak forest and "Rosaceae". Here can also be found the wild variants of many cereals, including einkorn wheat, emmer, oat and rye.
South of this zone lies a zone of mixed woodland-steppe vegetation. Between Raqqa and the Syro–Iraqi border the Euphrates flows through a steppe landscape. This steppe is characterised by white wormwood ("Artemisia herba-alba") and Amaranthaceae. Throughout history, this zone has been heavily overgrazed due to the practicing of sheep and goat pastoralism by its inhabitants. Southeast of the border between Syria and Iraq starts true desert. This zone supports either no vegetation at all or small pockets of "Chenopodiaceae" or "Poa sinaica". Although today nothing of it survives due to human interference, research suggests that the Euphrates Valley would have supported a riverine forest. Species characteristic of this type of forest include the Oriental plane, the Euphrates poplar, the tamarisk, the ash and various wetland plants.
Among the fish species in the Tigris–Euphrates basin, the family of the Cyprinidae are the most common, with 34 species out of 52 in total. Among the Cyprinids, the mangar has good recreational fishing qualities, leading the British to nickname it the "Tigris salmon." The Euphrates softshell turtle is an endangered soft-shelled turtle that is limited to the Tigris–Euphrates river system.
The Neo-Assyrian palace reliefs from the 1st millennium BCE depict lion and bull hunts in fertile landscapes. Sixteenth to nineteenth century European travellers in the Syrian Euphrates basin reported on an abundance of animals living in the area, many of which have become rare or even extinct. Species like gazelle, onager and the now-extinct Arabian ostrich lived in the steppe bordering the Euphrates valley, while the valley itself was home to the wild boar. Carnivorous species include the wolf, the golden jackal, the red fox, the leopard and the lion. The Syrian brown bear can be found in the mountains of Southeast Turkey. The presence of Eurasian beaver has been attested in the bone assemblage of the prehistoric site of Tell Abu Hureyra in Syria, but the beaver has never been sighted in historical times.
River.
The Hindiya Barrage on the Iraqi Euphrates, based on plans by British civil engineer William Willcocks and finished in 1913, was the first modern water diversion structure built in the Tigris–Euphrates river system. The Hindiya Barrage was followed in the 1950s by the Ramadi Barrage and the nearby Abu Dibbis Regulator, which serve to regulate the flow regime of the Euphrates and to discharge excess flood water into the depression that is now Lake Habbaniyah. Iraq's largest dam on the Euphrates is the Haditha Dam; a earth-fill dam creating Lake Qadisiyah. Syria and Turkey built their first dams in the Euphrates in the 1970s. The Tabqa Dam in Syria was completed in 1973 while Turkey finished the Keban Dam, a prelude to the immense Southeastern Anatolia Project, in 1974. Since then, Syria has built two more dams in the Euphrates, the Freedom Dam and the Tishrin Dam, and plans to build a fourth dam – the Halabiye Dam – between Raqqa and Deir ez-Zor. The Tabqa Dam is Syria's largest dam and its reservoir (Lake Assad) is an important source of irrigation and drinking water. It was planned that should be irrigated from Lake Assad, but in 2000 only had been realized. Syria also built three smaller dams on the Khabur and its tributaries.
With the implementation of the Southeastern Anatolia Project ("", or "GAP") in the 1970s, Turkey launched an ambitious plan to harness the waters of the Tigris and the Euphrates for irrigation and hydroelectricity production and provide an economic stimulus to its southeastern provinces. GAP affects a total area of and approximately 7 million people; representing about 10 percent of Turkey's total surface area and population, respectively. When completed, GAP will consist of 22 dams – including the Keban Dam – and 19 power plants and provide irrigation water to of agricultural land, which is about 20 percent of the irrigable land in Turkey. C. of this irrigated land is located in the Euphrates basin. By far the largest dam in GAP is the Atatürk Dam, located c. northwest of Şanlıurfa. This dam was completed in 1992; thereby creating a reservoir that is the third-largest lake in Turkey. With a maximum capacity of , the Atatürk Dam reservoir is large enough to hold the entire annual discharge of the Euphrates. Completion of GAP was scheduled for 2010 but has been delayed because the World Bank has withheld funding due to the lack of an official agreement on water sharing between Turkey and the downstream states on the Euphrates and the Tigris.
Apart from barrages and dams, Iraq has also created an intricate network of canals connecting the Euphrates with Lake Habbaniyah, Lake Tharthar, and Abu Dibbis reservoir; all of which can be used to store excess floodwater. Via the Shatt al-Hayy, the Euphrates is connected with the Tigris. The largest canal in this network is the Main Outfall Drain or so-called "Third River;" constructed between 1953 and 1992. This canal is intended to drain the area between the Euphrates and the Tigris south of Baghdad to prevent soil salinization from irrigation. It also allows large freight barges to navigate up to Baghdad.
Environmental and social effects.
The construction of the dams and irrigation schemes on the Euphrates has had a significant impact on the environment and society of each riparian country. The dams constructed as part of GAP – in both the Euphrates and the Tigris basins – have affected 382 villages and almost 200,000 people have been resettled elsewhere. The largest number of people was displaced by the building of the Atatürk Dam, which alone affected 55,300 people. A survey among those who were displaced showed that the majority were unhappy with their new situation and that the compensation they had received was considered insufficient. The flooding of Lake Assad led to the forced displacement of c. 4,000 families, who were resettled in other parts of northern Syria as part of a now abandoned plan to create an "Arab belt" along the borders with Turkey and Iraq.
Apart from the changes in the discharge regime of the river, the numerous dams and irrigation projects have also had other effects on the environment. The creation of reservoirs with large surfaces in countries with high average temperatures has led to increased evaporation; thereby reducing the total amount of water that is available for human use. Annual evaporation from reservoirs has been estimated at in Turkey, in Syria and in Iraq. Water quality in the Iraqi Euphrates is low because irrigation water tapped in Turkey and Syria flows back into the river, together with dissolved fertilizer chemicals used on the fields. The salinity of Euphrates water in Iraq has increased as a result of upstream dam construction, leading to lower suitability as drinking water. The many dams and irrigation schemes, and the associated large-scale water abstraction, have also had a detrimental effect on the ecologically already fragile Mesopotamian Marshes and on freshwater fish habitats in Iraq.
The inundation of large parts of the Euphrates valley, especially in Turkey and Syria, has led to the flooding of many archaeological sites and other places of cultural significance. Although concerted efforts have been made to record or save as much of the endangered cultural heritage as possible, many sites are probably lost forever. The combined GAP projects on the Turkish Euphrates have led to major international efforts to document the archaeological and cultural heritage of the endangered parts of the valley. Especially the flooding of Zeugma with its unique Roman mosaics by the reservoir of the Birecik Dam has generated much controversy in both the Turkish and international press. The construction of the Tabqa Dam in Syria led to a large international campaign coordinated by UNESCO to document the heritage that would disappear under the waters of Lake Assad. Archaeologists from numerous countries excavated sites ranging in date from the Natufian to the Abbasid period, and two minarets were dismantled and rebuilt outside the flood zone. Important sites that have been flooded or affected by the rising waters of Lake Assad include Mureybet, Emar and Abu Hureyra. A similar international effort was made when the Tishrin Dam was constructed, which led, among others, to the flooding of the important Pre-Pottery Neolithic B site of Jerf el Ahmar. An archaeological survey and rescue excavations were also carried out in the area flooded by Lake Qadisiya in Iraq. Parts of the flooded area have recently become accessible again due to the drying up of the lake, resulting not only in new possibilities for archaeologists to do more research, but also providing opportunities for looting, which has been rampant elsewhere in Iraq in the wake of the 2003 invasion.
Religion.
Islam.
In Islamic tradition, a hadith of Muhammad states that the Last Hour will not occur until the Euphrates River uncovers a mountain of gold, over which people will fight. Ninety-nine out of every one hundred individuals engaged in this conflict will perish, with each person hoping to be the one who secures the treasure. The hadith also advises that whoever finds this gold should refrain from taking any of it. This event is considered one of the minor signs of the approaching Day of Judgment.
Christianity.
In the Christian Bible, the Euphrates River is mentioned in Revelation 16:12, in the final book of the New Testament. The author, John of Patmos, writes about the Euphrates river drying up as part of a series of events that foretell the Second Coming of Jesus Christ.
The river Phrath mentioned in Genesis 2:14 is also identified as the Euphrates.
History.
Palaeolithic to Chalcolithic periods.
The early occupation of the Euphrates basin was limited to its upper reaches; that is, the area that is popularly known as the Fertile Crescent. Acheulean stone artifacts have been found in the Sajur basin and in the El Kowm oasis in the central Syrian steppe; the latter together with remains of "Homo erectus" that were dated to 450,000 years old. In the Taurus Mountains and the upper part of the Syrian Euphrates valley, early permanent villages such as Abu Hureyra – at first occupied by hunter-gatherers but later by some of the earliest farmers, Jerf el Ahmar, Mureybet and Nevalı Çori became established from the eleventh millennium BCE onward. In the absence of irrigation, these early farming communities were limited to areas where rainfed agriculture was possible, that is, the upper parts of the Syrian Euphrates as well as Turkey. Late Neolithic villages, characterized by the introduction of pottery in the early 7th millennium BCE, are known throughout this area. Occupation of lower Mesopotamia started in the 6th millennium and is generally associated with the introduction of irrigation, as rainfall in this area is insufficient for dry agriculture. Evidence for irrigation has been found at several sites dating to this period, including Tell es-Sawwan. During the 5th millennium BCE, or late Ubaid period, northeastern Syria was dotted by small villages, although some of them grew to a size of over . In Iraq, sites like Eridu and Ur were already occupied during the Ubaid period. Clay boat models found at Tell Mashnaqa along the Khabur indicate that riverine transport was already practiced during this period. The Uruk period, roughly coinciding with the 4th millennium BCE, saw the emergence of truly urban settlements across Mesopotamia. Cities like Tell Brak and Uruk grew to over in size and displayed monumental architecture. The spread of southern Mesopotamian pottery, architecture and sealings far into Turkey and Iran has generally been interpreted as the material reflection of a widespread trade system aimed at providing the Mesopotamian cities with raw materials. Habuba Kabira on the Syrian Euphrates is a prominent example of a settlement that is interpreted as an Uruk colony.
Ancient history.
During the Jemdet Nasr (3600–3100 BCE) and Early Dynastic periods (3100–2350 BCE), southern Mesopotamia experienced a growth in the number and size of settlements, suggesting strong population growth. These settlements, including Sumero-Akkadian sites like Sippar, Uruk, Adab and Kish, were organized in competing city-states. Many of these cities were located along canals of the Euphrates and the Tigris that have since dried up, but that can still be identified from remote sensing imagery. A similar development took place in Upper Mesopotamia, Subartu and Assyria, although only from the mid 3rd millennium and on a smaller scale than in Lower Mesopotamia. Sites like Ebla, Mari and Tell Leilan grew to prominence for the first time during this period.
Large parts of the Euphrates basin were for the first time united under a single ruler during the Akkadian Empire (2335–2154 BC) and Ur III empires, which controlled – either directly or indirectly through vassals – large parts of modern-day Iraq and northeastern Syria. Following their collapse, the Old Assyrian Empire (1975–1750 BCE) and Mari asserted their power over northeast Syria and northern Mesopotamia, while southern Mesopotamia was controlled by city-states like Isin, Kish and Larsa before their territories were absorbed by the newly emerged state of Babylonia under Hammurabi in the early to mid 18th century BCE.
In the second half of the 2nd millennium BCE, the Euphrates basin was divided between Kassite Babylon in the south and Mitanni, Assyria and the Hittite Empire in the north, with the Middle Assyrian Empire (1365–1020 BC) eventually eclipsing the Hittites, Mitanni and Kassite Babylonians. Following the end of the Middle Assyrian Empire in the late 11th century BCE, struggles broke out between Babylonia and Assyria over the control of the Iraqi Euphrates basin. The Neo-Assyrian Empire (935–605 BC) eventually emerged victorious out of this conflict and also succeeded in gaining control of the northern Euphrates basin in the first half of the 1st millennium BCE.
In the centuries to come, control of the wider Euphrates basin shifted from the Neo-Assyrian Empire (which collapsed between 612 and 599 BC) to the short lived Median Empire (612–546 BC) and equally brief Neo-Babylonian Empire (612–539 BC) in the last years of the 7th century BC, and eventually to the Achaemenid Empire (539–333 BC). The Achaemenid Empire was in turn overrun by Alexander the Great, who defeated the last king Darius III and died in Babylon in 323 BCE.
Subsequent to this, the region came under the control of the Seleucid Empire (312–150 BC), Parthian Empire (150–226 AD) (during which several Neo-Assyrian states such as Adiabene came to rule certain regions of the Euphrates), and was fought over by the Roman Empire, its succeeding Byzantine Empire and the Sassanid Empire (226–638 AD), until the Islamic conquest of the mid 7th century AD. The Battle of Karbala took place near the banks of this river in 680 AD.
In the north, the river served as a border between Greater Armenia (331 BC–428 AD) and Lesser Armenia (the latter became a Roman province in the 1st century BC).
Modern era.
After World War I, the borders in Southwest Asia were redrawn in the Treaty of Lausanne (1923), when the Ottoman Empire was partitioned. Clause 109 of the treaty stipulated that the three riparian states of the Euphrates (at that time Turkey, France for its Syrian mandate and the United Kingdom for its mandate of Iraq) had to reach a mutual agreement on the use of its water and on the construction of any hydraulic installation. An agreement between Turkey and Iraq signed in 1946 required Turkey to report to Iraq on any hydraulic changes it made on the Tigris–Euphrates river system, and allowed Iraq to construct dams on Turkish territory to manage the flow of the Euphrates.
The river featured on the coat of arms of Iraq from 1932 to 1959.
Turkey and Syria completed their first dams on the Euphrates – the Keban Dam and the Tabqa Dam, respectively – within one year of each other and filling of the reservoirs commenced in 1975. At the same time, the area was hit by severe drought and river flow toward Iraq was reduced from in 1973 to in 1975. This led to an international crisis during which Iraq threatened to bomb the Tabqa Dam. An agreement was eventually reached between Syria and Iraq after intervention by Saudi Arabia and the Soviet Union. A similar crisis, although not escalating to the point of military threats, occurred in 1981 when the Keban Dam reservoir had to be refilled after it had been almost emptied to temporarily increase Turkey's hydroelectricity production. In 1984, Turkey unilaterally declared that it would ensure a flow of at least per second, or per year, into Syria, and in 1987 a bilateral treaty to that effect was signed between the two countries. Another bilateral agreement from 1989 between Syria and Iraq settles the amount of water flowing into Iraq at 60 percent of the amount that Syria receives from Turkey. In 2008, Turkey, Syria and Iraq instigated the Joint Trilateral Committee (JTC) on the management of the water in the Tigris–Euphrates basin and on 3 September 2009 a further agreement was signed to this effect.
On 15 April 2014, Turkey began to reduce the flow of the Euphrates into Syria and Iraq. The flow was cut off completely on 16 May 2014 resulting in the Euphrates terminating at the Turkish–Syrian border. This was in violation of an agreement reached in 1987 in which Turkey committed to releasing a minimum of of water per second at the Turkish–Syrian border.
During the Syrian civil war and the Iraqi Civil War, much of the Euphrates was controlled by the Islamic State from 2014 until 2017, when the terrorist group began losing land and was eventually defeated territorially in Syria at the Battle of Baghouz and in Iraq in the Western Iraq offensive respectively.
Economy.
Throughout history, the Euphrates has been of vital importance to those living along its course. With the construction of large hydropower stations, irrigation schemes, and pipelines capable of transporting water over large distances, many more people now depend on the river for basic amenities such as electricity and drinking water than in the past. Syria's Lake Assad is the most important source of drinking water for the city of Aleppo, to the west of the river valley. The lake also supports a modest state-operated fishing industry. Through a newly restored power line, the Haditha Dam in Iraq provides electricity to Baghdad.
References.
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Tigris
River in Turkey, Iraq, and Syria
The Tigris ( ; see below) is the eastern of the two great rivers that define Mesopotamia, the other being the Euphrates. The river flows south from the mountains of the Armenian Highlands through the Syrian and Arabian Deserts, before merging with the Euphrates and reaching to the Persian Gulf.
The Tigris passes through historical cities like Mosul, Tikrit, Samarra, and Baghdad. It is also home to archaeological sites and ancient religious communities, including the Mandaeans, who use it for baptism. In ancient times, the Tigris nurtured the Assyrian Empire, with remnants like the relief of King Tiglath-Pileser.
Today, the Tigris faces modern threats from geopolitical instability, dam projects, poor water management, and climate change, leading to concerns about its sustainability. Efforts to protect and preserve the river's legacy are ongoing, with local archaeologists and activists working to safeguard its future.
Etymology.
The Ancient Greek form () is an alternative form of (), which was adapted from Old Persian (), itself from Elamite , itself from Sumerian ( or , probably derived from "running water"). The Sumerian term, which can be interpreted as "the swift river", contrasts the Tigris to its neighbour, the Euphrates, whose leisurely pace caused it to deposit more silt and build up a higher bed than the Tigris. The Sumerian form was borrowed into Akkadian as and from there into the other Semitic languages (compare ; or ; , ).
Another name for the Tigris used in Middle Persian was , literally "swift river". Today, however, () refers to the confluence of the Euphrates and Tigris rivers, known in Arabic as the . In Kurdish languages, it is known as , "the Great Water".
The name of the Tigris in languages that have been important in the region:
Geography.
The Tigris is long, rising in the Taurus Mountains of eastern Turkey about southeast of the city of Elazığ and about from the headwaters of the Euphrates. The river then flows for through Southeastern Turkey before forming part of the Syria-Turkey border. This stretch of is the only part of the river that is located in Syria. Some of its affluences are Garzan, Anbarçayi, Batman, and the Great and the Little Zab.
Close to its confluence with the Euphrates, the Tigris splits into several channels. First, the artificial Shatt al-Hayy branches off, to join the Euphrates near Nasiriyah. Second, the Shatt al-Muminah and Majar al-Kabir branch off to feed the Central Marshes. Further downstream, two other distributary channels branch off (the Al-Musharrah and Al-Kahla), to feed the Hawizeh Marshes. The main channel continues southwards and is joined by the Al-Kassarah, which drains the Hawizeh Marshes. Finally, the Tigris joins the Euphrates near al-Qurnah to form the Shatt-al-Arab. According to Pliny and other ancient historians, the Euphrates originally had its outlet into the sea separate from that of the Tigris.
Baghdad, the capital of Iraq, stands on the banks of the Tigris. The port city of Basra straddles the Shatt al-Arab. In ancient times, many of the great cities of Mesopotamia stood on or near the Tigris, drawing water from it to irrigate the civilization of the Sumerians. Notable Tigris-side cities included Nineveh, Ctesiphon, and Seleucia, while the city of Lagash was irrigated by the Tigris via a canal dug around 2900 B.C.
Navigation.
The Tigris has long been an important transport route in a largely desert country. Shallow-draft vessels can go as far as Baghdad, but rafts have historically been needed for transport downstream from Mosul.
Management and water quality.
The Tigris is heavily dammed in Iraq and Turkey to provide water for irrigating the arid and semi-desert regions bordering the river valley. Damming has also been important for averting floods in Iraq, to which the Tigris has historically been notoriously prone following April melting of snow in the Turkish mountains. Mosul Dam is the largest dam in Iraq.
Recent Turkish damming of the river has been the subject of some controversy, for both its environmental effects within Turkey and its potential to reduce the flow of water downstream.
Water from both rivers is used as a means of pressure during conflicts.
In 2014 a major breakthrough in developing consensus between multiple stakeholder representatives of Iraq and Turkey on a Plan of Action for promoting exchange and calibration of data and standards pertaining to Tigris river flows was achieved. The consensus, known as the "Geneva Consensus On Tigris River", was reached at a meeting organized in Geneva by the think tank Strategic Foresight Group.
In February 2016, the United States Embassy in Iraq as well as the Prime Minister of Iraq Haider al-Abadi issued warnings that Mosul Dam could collapse. The United States warned people to evacuate the floodplain of the Tigris because between 500,000 and 1.5 million people were at risk of drowning due to flash flood if the dam collapses, and that the major Iraqi cities of Mosul, Tikrit, Samarra, and Baghdad were at risk.
Religion and mythology.
In Sumerian mythology, the Tigris was created by the god Enki, who filled the river with flowing water.
In Hittite and Hurrian mythology, "Aranzah" (or "Aranzahas" in the Hittite nominative form) is the Hurrian name of the Tigris River, which was deified. He was the son of Kumarbi and the brother of Teshub and Tašmišu, one of the three gods spat out of Kumarbi's mouth onto Mount Kanzuras. Later he colluded with Anu and the Teshub to destroy Kumarbi (The Kumarbi Cycle).
The Tigris appears twice in the Old Testament. First, in the Book of Genesis, it is the third of the four rivers branching off the river issuing out of the Garden of Eden. The second mention is in the Book of Daniel, wherein Daniel states he received one of his visions "when I was by that great river the Tigris".
The Tigris River is also mentioned in Islam in Sunan Abi Daud 4306. The tomb of Imam Ahmad Bin Hanbal and Syed Abdul Razzaq Jilani is in Baghdad and the flow of Tigris restricts the number of visitors.
Baháʼu'lláh, the founder of the Baháʼí Faith, also wrote "The Hidden Words" around 1858 while he walked along the banks of the Tigris river during his exile in Baghdad.
The river featured on the coat of arms of Iraq from 1932 to 1959.
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Mesopotamia (disambiguation)
Mesopotamia is the historical region between the Tigris and Euphrates rivers, largely corresponding with the territory of modern Iraq.
Mesopotamia may also refer to:
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Other uses.
Topics referred to by the same term
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Tigris and Euphrates
Board game
Tigris and Euphrates () is a tabletop eurogame designed by Reiner Knizia and first published in 1997 by Hans im Glück. Before its publication, it was highly anticipated by German gamers hearing rumors of a "gamer's game" designed by Knizia. "Tigris and Euphrates" won first prize in the 1998 Deutscher Spielepreis. A card game version was released in 2005.
The game is set as a clash between neighboring dynasties at the dawn of civilization and is named after the rivers Tigris and Euphrates, in the region now called the Middle East. The rivers together formed natural borders for an area which harboured several grand ancient civilizations, including Sumer, Babylonia, and Assyria. The Greeks called this area Mesopotamia, which literally means "between the rivers".
Gameplay.
The game can be played by two, three, or four people. Play offers both tactical and strategic objectives. As with many games, short-term objectives gain prominence when more players participate, as players have fewer chances to follow up on previous moves. Luck plays a role, as players draw tiles from a bag, but it is seldom decisive. Players may selectively discard and redraw their tiles at the cost of one "action point", of which each player has two per turn. The game does not use dice.
The board is a map of the two rivers, marked with a square grid. There are four types of tiles with corresponding leaders: temples and priests (red), farms and farmers (blue), markets and merchants (green), and settlements and kings (black). The game starts with ten isolated temple tiles already placed on the board. Players play tiles and leaders onto the board, creating and expanding regions and kingdoms. Monuments may be built on the board when four tiles of the same color are played into a square pattern.
Two leaders of the same type cannot coexist in the same kingdom. Internal conflicts are caused by players adding a second leader of a type to a kingdom. External conflicts are caused by players playing tiles to merge two existing kingdoms.
During the game, players collect points in each of the four colors as a result of playing tiles, resolving conflicts and controlling monuments. After the final round each player sorts his or her points by color, including any "treasures" which they have acquired, which count as any color the player wishes. In order to limit specialization the player with the most points in their weakest category wins.
For example:
Players must balance their scoring and avoid overspecializing. Knizia later used this mechanism as the basis for Ingenious.
Reception.
Thomas Lehmann comments: "If you are looking for a tactically rich, intense strategy game with lots of conflict (unusual in a German game), try "Tigris & Euphrates" and see why so many players consider this game Reiner Knizia's masterpiece."
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Tigris (disambiguation)
The Tigris is the eastern member of the two great rivers that define Mesopotamia.
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See also.
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Geography of Mesopotamia
The geography of Mesopotamia, encompassing its ethnology and history, centered on the two great rivers, the Tigris and Euphrates. While the southern is flat and marshy, the near approach of the two rivers to one another, at a spot where the undulating plateau of the north sinks suddenly into the Babylonian alluvium, tends to separate them still more completely. In the earliest recorded times, the northern portion was included in Mesopotamia; it was marked off as Assyria after the rise of the Assyrian monarchy. Apart from Assur, the original capital of Assyria, the chief cities of the country, Nineveh, Kalaḫ and Arbela, were all on the east bank of the Tigris. The reason was its abundant supply of water, whereas the great plain on the western side had to depend on streams flowing into the Euphrates.
Defining Mesopotamia.
Mesopotamia means "(Land) between two rivers" in ancient Greek, referring to the land between the Tigris and Euphrates rivers, but the region can be broadly defined to include the area that is now most of Iraq, eastern Syria, southeastern Turkey. The oldest known occurrence of the name Mesopotamia dates to the 4th century BCE, when it was used to designate the land east of the Euphrates in north Syria. In modern times it has been more generally applied to all the lands between the Euphrates and the Tigris, thereby incorporating not only parts of Syria but also almost all of Iraq and southeastern Turkey, and parts of southwestern Iran. The neighboring steppes to the west of the Euphrates and the western part of the Zagros Mountains are also often included under the wider term Mesopotamia. A further distinction is usually made between Upper or Northern Mesopotamia and Lower or Southern Mesopotamia. Upper Mesopotamia, also known as the Jazirah, is the area between the Euphrates and the Tigris from their sources down to Baghdad. Lower Mesopotamia is the area from Baghdad to the Persian Gulf. In modern scientific usage, the term Mesopotamia often also has a chronological connotation. In modern Western historiography of the region, the term "Mesopotamia" is usually used to designate the area from the beginning of time, until the Muslim conquest in the 630s, with the Arabic names Iraq and Jazirah being to describe the region after that live event.
Upper Mesopotamia.
This vast flat is about in length, interrupted only by a single limestone range rising abruptly out of the plain, and branching off from the Zagros Mountains under the names of Sarazur, Hainrin and Sinjar. The numerous remains of old habitations show how thickly this level tract must once have been peopled, though now mostly a wilderness. North of the plateau rises a well-watered and undulating belt of country, into which run low ranges of limestone hills, sometimes arid, sometimes covered with dwarf oak, and often shutting in, between their northern and northeastern flank and the main mountain line from which they detach themselves, rich plains and fertile valleys. Behind them tower the massive ridges of the Euphrates and Zagros ranges, where the Tigris and Euphrates take their rise, and which cut off Assyria from Armenia and Kurdistan. The name Assyria itself was derived from that of the city of Assur or Asur, now Qal'at Sherqat (Kaleh Shergat), on the right bank of the Tigris, midway between the Great and Little Zab. It remained the capital long after the Assyrians had become the dominant power in western Asia, but was finally supplanted by Calah (Nimrud), Nineveh (Nebi Vunus and Kuyunjik), and Dur-Sharrukin (Khorsabad), some farther north.
Lower Mesopotamia.
In contrast with the arid plateau of Mesopotamia stretched the rich alluvial plain of Chaldea, formed by the deposits of the two great rivers that encircled it. The soil was extremely fertile, and teemed with an industrious population. Eastward rose the mountains of Elam, southward were the sea-marshes and the Kaldy or Chaldeans and other Arameans, while on the west the civilization of Babylonia encroached beyond the banks of the Euphrates, upon the territory of the nomadic ancient Semitic-speaking peoples (or Suti). Here stood Ur (Mugheir, more correctly Muqayyar) the earliest capital of the country; and Babylon, with its suburb, Borsippa (Birs Nimrud), as well as the two Sippars (the Sepharvaim of Scripture, now Abu Habba), occupied both the Arabian and Chaldaean sides of the river. The Arakhtu, or "river of Babylon," flowed past the southern side of the city, and to the southwest of it on the Arabian bank lay the great inland freshwater sea of Najaf, surrounded by red sandstone cliffs of considerable height, in length and 35 in breadth in the widest part. Above and below this sea, from Borsippa to Kufa, extend the famous Chaldaean marshes, where Alexander the Great was nearly lost (Arrian, Eup. Al. vii. 22; Strabo xvi. I, § 12); but these depend upon the state of the Hindiya canal, disappearing altogether when it is closed.
Eastward of the Euphrates and southward of Sippara, Kutha and Babylon were Kish (Ultaimir, E. of Hillah), Nippur (Niffer)-where stood the great sanctuary of El-lu, the older Bel-Uruk or Uruk (Arabic "Warka") and Larsa (Arabic "Senkera") with its temple of the sun god, while eastward of the Shatt el-Hai, probably the ancient channel of the Tigris, was Lagash ("Tello"), which played an important part in early Babylonian history.
The primitive seaport of the country, Eridu, the seat of the worship of Ea the culture-god, was a little south of Ur on the west side of the Euphrates. It is now about from the sea; as about 46 inches of land have been formed by the silting up of the shore since the foundation of Spasinus Charax (Mu/-zamrah) in the time of Alexander the Great, or some a year, the city would have existed perhaps 6000 years ago. The marshes in the south, like the adjoining desert, were frequented by Aramaic tribes; of these, the most famous were the Chaldaeans, who, under Marduk-apla-iddina II, made themselves masters of Babylon and gave their name in later days to the whole population of the country. The combined stream of the Euphrates and Tigris as it flowed through the marshes was known to the Babylonians as the "ndr marrati", "the salt river" (cp. Book of Jeremiah 1:21), a name originally applied to the Persian Gulf.
The alluvial plain of Babylonia was called Edin, though the name was properly restricted to "the plain" on the western bank of the river where the Bedouins pastured the flocks of their Babylonian masters. This "bank" or "kisad", together with the corresponding western bank of the Tigris (according to Fritz Hommel, the modern Shatt el-Uai), gave its name to the land of Chesed, whence the Kasdim or Kasdin of the Hebrew Bible. In the early inscriptions of Lagash, the whole district is known as "Gu-Edinna", the Sumerian equivalent of the Semitic "Kisad Edini". The coastland was similarly known as "Gu-gubba" (Akkadian "Kisad tamtim") "bank of the sea."
A more comprehensive name of southern Mesopotamia was "Kengi", "the land," or "Kengi Sumer", "the land of Sumer". Sumer has been supposed to be the original of the Biblical Shinar and the Sankhar of the Amarna letters. Opposed to Kengi and Sumer were Urra (Un) and Akkad or northern Babylonia. The original meaning of Urra was perhaps "clayey soil," but it came to signify "the upper country" or "highlands," "kengi" being "the lowlands." In Semitic times, Urra was pronounced Un and confounded with "uru", "city" as a geographical term, however, it was replaced by "Akkadu", the Semitic form of "Agade" - written Akkattim in the Elamite inscriptions - the name of Sargon of Akkad's capital. The rise of Sargon's empire was the probable cause of this extension of the name of Akkad; henceforward in the imperial title, "Sumer and Akkad" denoted the whole of Babylonia. After the Kassite conquest of the country, northern Babylonia came to be known as Kar-Duniyash, "the wall of the god Duniyask," from a line of forts similar to that built by Nebuchadnezzar II between Sippar and Opis, to defend his kingdom from attacks from the north. As this last was "the Wall of Semiramis" mentioned by Strabo (xi. 14. 8), Kar-Duniyash may have represented the Median Wall of Xenophon (Anab. ii. 4. 12), traces of which were found by F.R. Chesney extending from Fallujah to Jibar.
Perennial irrigation.
The dense population arose from the elaborate irrigation of the Babylonian plain, which had originally reclaimed it from a pestiferous and uninhabitable swamp, and had made it the most fertile country in the world. The science of irrigation and engineering seems to have been first developed in Babylonia, which was covered by a network of canals, all skillfully planned and regulated. The three chief of them carried off the waters of the Euphrates to the Tigris above Babylon: the Zabzallat canal (or Nahr Sarsar) running from Faluja to Ctesiphon, the Kutha canal from Sippara to Madam, passing Tell Ibrahim or Kuth'a on the way, and the King's canal or Ar-Malcha between the other two. This last, which perhaps owed its name to Hammurabi, was conducted from the Euphrates towards Upi or Opis, which has been shown by H. Winckler ("Altorientalische Forschungen", ii. pp. 509 seq.) to have been close to Seleucia on the western side of the Tigris. The Pallacopas, called Pallukkatu in the Neo-Babylonian texts, started from Pallukkatu or Falluja, and running parallel to the western bank of the Euphrates as far as Iddaratu or Teredon, (?) watered an immense tract of land and supplied a large lake near Borsippa. B. Meissner may be right in identifying it with "the Canal of the Sun-god" of the early texts.
Thanks to this system of irrigation, the cultivation of the soil was highly advanced in Babylonia. According to Herodotus (1.193), wheat commonly returned two hundredfold to the sower, and occasionally three hundredfold. Pliny the Elder (H. N. xviii. 11) states that it was cut twice, and afterwards was good keep for sheep, and Berossus remarked that wheat, sesame, barley, ophrys, palms, apples and many kinds of shelled fruit grew wild, as wheat still does in the neighbourhood of Anah. A Persian poem celebrated the 360 uses of the palm (Strabo xvi. I. 14), and Ammianus Marcellinus (xxiv. 3) says that from the point reached by Julian's army to the shores of the Persian Gulf was one continuous forest of verdure.
Ancient canals.
The location of most of the major cities such as Kish, Uruk, Lagash etc. is known with certainty, while the location of minor settlements, situated along a network of canals, is more difficult to reconstruct.
An important source of Mesopotamian toponymy is the great Babylonian encyclopedia "Urra=hubullu" and its commentaries. These texts contain lists of toponyms, but circumstantial evidence is required to correlate these with their geographical location. The most useful category of texts for this purpose are itineraries, which list settlements in the sequence they are passed by a traveller.
Important canals of Sumer included
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List of tributaries of the Tigris
This is a list of tributaries of the Tigris by order of entrance.
The Tigris originates in Turkey, forms a part of the borders of Turkey-Syria and flows through Iraq. It joins the Euphrates forming Shatt al-Arab, which empties into the Persian Gulf.
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Lower Mesopotamia
Region between Euphrates and Tigris
Lower Mesopotamia is a historical region of Mesopotamia. It is located in the alluvial plain of Iraq from the Hamrin Mountains to the Faw Peninsula near the Persian Gulf.
In the Middle Ages it was also known as the Sawad and al-Jazira al-sflia ("Lower Jazira"), which strictly speaking designated only the southern alluvial plain, and Arab Iraq, as opposed to Persian Iraq, the Jibal. Lower Mesopotamia was home to Sumer and Babylonia.
Delimitation.
The medieval Arab geographers placed the northern border between Iraq and Upper Mesopotamia (the "Jazirah") in a line running from Anbar on the Euphrates to Tikrit on the Tigris, although later it was shifted to a line running due west from Tikrit, thus including several towns on the Euphrates past Anbar into Iraq.
Geography.
An alluvial plain begins north of Tikrit Near Hamrin Mountains and extends to the Persian Gulf. Here the Tigris and Euphrates lie above the level of the plain in many places, and the whole area is a river delta interlaced by the channels of the two rivers and by qanat. Intermittent lakes, fed by the rivers in flood, also characterize southeastern Iraq. A fairly large area () just above the confluence of the two rivers at al Qurnah and extending east of the Tigris beyond the Iranian border is marshland, known as Lake Hammar, the result of centuries of flooding and inadequate drainage. Much of it is permanent marsh, but some parts dry out in early winter, and other parts become marshland only in years of great flood.
Because the waters of the Tigris and Euphrates above their confluence are heavily silt-laden, irrigation and fairly frequent flooding deposit large quantities of silty loam in much of the delta area. Windborne silt contributes to the total deposit of sediments. It has been estimated that the delta plains are built up at the rate of nearly twenty centimeters in a century. In some areas, major floods lead to the deposit in temporary lakes of as much as thirty centimeters of mud.
The Tigris and Euphrates also carry large quantities of salts. These, too, are spread on the land by sometimes excessive irrigation and flooding. A high water table and poor surface and subsurface drainage tend to concentrate the salts near the surface of the soil. In general, the salinity of the soil increases from Baghdad south to the Persian Gulf and severely limits productivity in the region south of Amarah. The salinity is reflected in the large lake in central Iraq, southwest of Baghdad, known as Lake Milh. There are two other major lakes in the country to the north of Lake Milh: Lake Tharthar and Lake Habbaniyah.
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Nile
Major river in northeastern Africa
The Nile (also known as the Nile River or River Nile) is a major north-flowing river in northeastern Africa. It flows into the Mediterranean Sea. The Nile is the longest river in Africa. It has historically been considered the longest river in the world,
though this has been contested by research suggesting that the Amazon River is slightly longer.
Of the world's major rivers, the Nile has one of the lowest average annual flow rates.
About long, its drainage basin covers eleven countries: the Democratic Republic of the Congo, Tanzania, Burundi, Rwanda, Uganda, Kenya, Ethiopia, Eritrea, South Sudan, Sudan, and Egypt.
In particular, the Nile is the primary water source of Egypt, Sudan and South Sudan.
In these countries it is an important economic factor in agriculture and fishing.
The Nile has two major tributaries: the White Nile and the Blue Nile. The White Nile, being the longer, is traditionally considered to be the headwaters stream, while the Blue Nile actually contributes 80% of the water and silt below the confluence of the two. The White Nile rises in the Great Lakes region. It begins at Lake Victoria and flows through Uganda and South Sudan. The Blue Nile begins at Lake Tana in Ethiopia and flows into Sudan from the southeast. The two rivers meet at the Sudanese capital of Khartoum.
After Khartoum the river flows north, almost entirely through the Nubian Desert, to Cairo and its large delta, joining the Mediterranean Sea at Alexandria. Egyptian civilization and Sudanese kingdoms have depended on the river and its annual flooding since ancient times. Most of the population and cities of Egypt lie along those parts of the Nile valley north of the Aswan Dam. Nearly all the cultural and historical sites of Ancient Egypt developed and are found along river banks. The Nile is, with the Rhône and Po, one of the three Mediterranean rivers with the largest water discharge.
Etymology.
The standard English names "White Nile" and "Blue Nile" refer to the river's source, derived from Arabic names formerly applied to only the Sudanese stretches that meet at Khartoum.
In the ancient Egyptian language, the Nile is called "Ḥꜥpy" (Hapy) or "Jtrw" (Iteru), meaning "river". In Coptic, the word ⲫⲓⲁⲣⲟ, pronounced "piaro" (Sahidic) or "phiaro" (Bohairic), means "the river" (lit. p(h).iar-o "the.canal-great"), and comes from the same ancient name. In Nobiin, the river is called "Áman Dawū", meaning "the great water". In Luganda, the river is called "Kiira" or "Kiyira". In Runyoro, it is called "Kihiira". In Egyptian Arabic, the Nile is called "en-Nīl", while in Standard Arabic it is called "an-Nīl". In Biblical Hebrew, it is <templatestyles src="Script/styles_hebrew.css" />הַיְאוֹר, "Ha-Ye'or" or <templatestyles src="Script/styles_hebrew.css" />הַשִׁיחוֹר, "Ha-Shiḥor".
The English name "Nile" and the Arabic names "en-Nîl" and "an-Nîl" both derive from the Latin ' and the Ancient Greek . Beyond that, however, the etymology is disputed. Homer called the river , "Aiguptos", but in subsequent periods, Greek authors referred to its lower course as "Neilos"; this term became generalized for the entire river system. Thus, the name may derive from Ancient Egyptian expression "n"ꜣ "r"ꜣ"w-ḥ"ꜣ"w(t)" (lit. 'the mouths of the front parts'), which referred specifically to the branches of