Indus River

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Satellite image of the Indus River basin in Pakistan and India
(International boundaries are superimposed)
Indus River basin map.svg
Map of the Indus River basin excluding the tributaries draining in to Rann of Kutch
Country China, India, Pakistan
State Jammu and Kashmir, Punjab, Khyber Pakhtunkhwa, Sindh, Gilgit-Baltistan, Tibet
Cities Leh, Skardu, Dasu, Besham, Thakot, Swabi, Dera Ismail Khan, Sukkur, Hyderabad
Physical characteristics
Source Sênggê Zangbo
 - location Tibetan Plateau
2nd source Gar Tsangpo
Source confluence 
 - location Shiquanhe, Ngari Prefecture, Tibet and India
 - coordinates 32°29′54″N79°41′28″E / 32.49833°N 79.69111°E / 32.49833; 79.69111
 - elevation4,255 m (13,960 ft)
Mouth Arabian Sea (primary), Rann of Kutch (secondary)
 - location
Indus River Delta (primary), Kori Creek (secondary), Pakistan, India
 - coordinates
23°59′40″N67°25′51″E / 23.99444°N 67.43083°E / 23.99444; 67.43083 Coordinates: 23°59′40″N67°25′51″E / 23.99444°N 67.43083°E / 23.99444; 67.43083
 - elevation
0 m (0 ft)
Length3,187 km (1,980 mi)
Basin size1,165,000 km2 (450,000 sq mi)
 - location Arabian Sea
 - average6,600 m3/s (230,000 cu ft/s)
 - minimum1,200 m3/s (42,000 cu ft/s)
 - maximum58,000 m3/s (2,000,000 cu ft/s)
Basin features
 - left Zanskar River, Suru River, Soan River, Jhelum River, Chenab River, Ravi River, Beas River, Sutlej River, Panjnad River, Ghaggar-Hakra River, Luni River
 - right Shyok River, Hunza River, Gilgit River, Swat River, Kunar River, Kabul River, Kurram River, Gomal River, Zhob River
Indus River in Kharmang District, Pakistan. River Sindh.jpg
Indus River in Kharmang District, Pakistan.

The Indus River (locally called Sindhu) is one of the longest rivers in Asia. Originating in the Tibetan Plateau in the vicinity of Lake Manasarovar, the river runs a course through the Ladakh region of Jammu and Kashmir, India towards the Gilgit-Baltistan region of Pakistan and the Hindukush ranges, and then flows in a southerly direction along the entire length of Pakistan to merge into the Arabian Sea near the port city of Karachi in Sindh. [1] [2] It is the longest river and national river of Pakistan. [3]

Tibetan Plateau a plateau in Central Asia

The Tibetan Plateau, also known in China as the Qinghai–Tibet Plateau or the Qing–Zang Plateau or Himalayan Plateau, is a vast elevated plateau in Central Asia and East Asia, covering most of the Tibet Autonomous Region and Qinghai in western China, as well as Ladakh and Lahaul & Spiti in India. It stretches approximately 1,000 kilometres (620 mi) north to south and 2,500 kilometres (1,600 mi) east to west. With an average elevation exceeding 4,500 metres (14,800 ft), the Tibetan Plateau is sometimes called "the Roof of the World" because it stands over 3 miles (4.8 km) above sea level and is surrounded by imposing mountain ranges that harbor the world's two highest summits, Mount Everest and K2, and is the world's highest and largest plateau, with an area of 2,500,000 square kilometres (970,000 sq mi). Sometimes termed the Third Pole, the Tibetan Plateau contains the headwaters of the drainage basins of most of the streams in surrounding regions. Its tens of thousands of glaciers and other geographical and ecological features serve as a "water tower" storing water and maintaining flow. The impact of global warming on the Tibetan Plateau is of intense scientific interest.

Lake Manasarovar freshwater lake in the Tibet Autonomous Region

Lake Manasarovar (Tibetan: མ་ཕམ་གཡུ་མཚོ།, Wylie: ma pham g.yu mtsho ; Chinese: 玛旁雍错 , 瑪旁雍錯 also called Mapam Yumtso, is a high altitude freshwater lake fed by the Kailash Glaciers near Mount Kailash in the Tibet Autonomous Region, China. The lake is revered a sacred place in four religions: Bön, Buddhism, Hinduism, and Jainism.

Ladakh Administrative Division in Jammu and Kashmir, India

Ladakh is a region in the Indian state of Jammu and Kashmir that currently extends from the Siachen Glacier in the Karakoram range to the main Great Himalayas to the south, inhabited by people of Indo-Aryan and Tibetan descent. It is one of the most sparsely populated regions in Jammu and Kashmir and its culture and history are closely related to that of Tibet. Ladakh is renowned for its remote mountain beauty and culture.


The river has a total drainage area exceeding 1,165,000 km2 (450,000 sq mi). Its estimated annual flow stands at around 243 km3 (58 cu mi), twice that of the Nile River and three times that of the Tigris and Euphrates rivers combined, making it one of the largest rivers in the world in terms of annual flow. [4] The Zanskar is its left bank tributary in Ladakh. In the plains, its left bank tributary is the Panjnad which itself has five major tributaries, namely, the Chenab, Jhelum, the Ravi, the Beas, and the Sutlej. Its principal right bank tributaries are the Shyok, the Gilgit, the Kabul, the Gomal, and the Kurram. Beginning in a mountain spring and fed with glaciers and rivers in the Himalayas, the river supports ecosystems of temperate forests, plains and arid countryside.

Tigris river which flows from Turkey through Iraq and Syria

The Tigris is the eastern of the two great rivers that define Mesopotamia, the other being the Euphrates. The river flows south from the mountains of southeastern Turkey through Iraq and empties into the Persian Gulf.

Euphrates River in Asia

The Euphrates 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. Originating in eastern Turkey, the Euphrates flows through Syria and Iraq to join the Tigris in the Shatt al-Arab, which empties into the Persian Gulf.

Zanskar River river of Nortwest India, tributary of the Indus

The Zanskar River is a north-flowing tributary of the Indus. In its upper reaches, the Zanskar has two main branches. First of these, the Doda, has its source near the Pensi-la 4,400 m (14,400 ft) mountain-pass and flows south-eastwards along the main Zanskar valley leading towards Padum, the capital of Zanskar. The second branch is formed by two main tributaries known as Kargyag river, with its source near the Shingo La 5,091 m (16,703 ft), and Tsarap river, with its source near the Baralacha-La. These two rivers unite below the village of Purne to form the Lungnak river. The Lungnak river then flows north-westwards along a narrow gorge towards Zanskar's central valley, where it unites with the Doda river to form the main Zanskar river. This river then takes a north-eastern course through the dramatic Zanskar Gorge until it joins the Indus near "Nimmu" in Ladakh.

The northern part of the Indus Valley, with its tributaries, forms the Punjab region, while the lower course of the Indus is known as Sindh and ends in a large delta. The river has historically been important to many cultures of the region. The 3rd millennium BC saw the rise of a major urban civilization of the Bronze Age. During the 2nd millennium BC, the Punjab region was mentioned in the hymns of the Hindu Rigveda as Sapta Sindhu and the Zoroastrian Avesta as Hapta Hindu (both terms meaning "seven rivers"). Early historical kingdoms that arose in the Indus Valley include Gandhāra, and the Ror dynasty of Sauvīra. The Indus River came into the knowledge of the West early in the Classical Period, when King Darius of Persia sent his Greek subject Scylax of Caryanda to explore the river, ca. 515 BC.

Punjab Region

The Punjab, also spelled Panjab, is a geopolitical, cultural and historical region in South Asia, specifically in the northern part of the Indian subcontinent, comprising areas of eastern Pakistan and northern India. The boundaries of the region are ill-defined and focus on historical accounts.

Sindh Province in Pakistan

Sindh is one of the four provinces of Pakistan, in the southeast of the country, and the historical home of the Sindhi people. Sindh is the third largest province of Pakistan by area, and second largest province by population after Punjab. Sindh is bordered by Balochistan province to the west, and Punjab province to the north. Sindh also borders the Indian states of Gujarat and Rajasthan to the east, and Arabian Sea to the south. Sindh's landscape consists mostly of alluvial plains flanking the Indus River, the Thar desert in the eastern portion of the province closest to the border with India, and the Kirthar Mountains in the western part of Sindh.

Indus River Delta river delta

The Indus River Delta, forms where the Indus River flows into the Arabian Sea, mostly in the Southern Sindh province of Pakistan with a small portion in the Kutch Region of the Western tip of India. The delta covers an area of about 41,440 km², and is approximately 210 km (130 mi) across where it meets the sea. The active part of the delta is 6,000 km2 in area (2,300 sq mi). The climate is arid, the region only receives between 25 and 50 centimetres of rainfall in a normal year. The delta is home to the largest arid mangrove forests in the world, as well as many birds, fish and the Indus Dolphin.

Etymology and names

This river was known to the ancient Indians in Sanskrit as Sindhu and the Persians as Hindu which was regarded by both of them as "the border river". [5] [6] [7] [8] [9] The variation between the two names is explained by the Old Iranian sound change *s > h, which occurred between 850–600 BCE according to Asko Parpola. [10] [11] From the Persian Achaemenid Empire, the name passed to the Greeks as Indós (Ἰνδός). [12] It was adopted by the Romans as Indus.

Indo-Aryan peoples ethnic group

Indo-Aryan peoples are a diverse Indo-European-speaking ethnolinguistic group of speakers of Indo-Aryan languages. There are over one billion native speakers of Indo-Aryan languages, most of them native to the Indian subcontinent and presently found all across South Asia, where they form the majority.

Sanskrit language of ancient India

Sanskrit is a language of ancient India with a history going back about 3,500 years. It is the primary liturgical language of Hinduism and the predominant language of most works of Hindu philosophy as well as some of the principal texts of Buddhism and Jainism. Sanskrit, in its variants and numerous dialects, was the lingua franca of ancient and medieval India. In the early 1st millennium CE, along with Buddhism and Hinduism, Sanskrit migrated to Southeast Asia, parts of East Asia and Central Asia, emerging as a language of high culture and of local ruling elites in these regions.

Asko Parpola Finnish Indologist and Sindhologist

Asko Parpola is a Finnish Indologist and Sindhologist, current professor emeritus of Indology and South Asian Studies at the University of Helsinki. He specializes in the Indus script.

The meaning of Sindhu as a "large body of water, sea, or ocean" is a later meaning in Classical Sanskrit. [13] A later Persian name for the river was Darya, [14] which similarly has the connotations of large body of water and sea.[ citation needed ]

Other variants of the name Sindhu include Assyrian Sinda (as early as the 7th century BC), Persian Ab-e-sind, Pashto Abasind, Arab Al-Sind, Chinese Sintow, and Javanese Santri .[ citation needed ]

The Santri are people in Javanese who practice a more orthodox version of Islam, in contrast to the more syncretic abangan.

Indus and the name of India

India is a Greek and Latin term for "the country of the River Indus". The region through which the river drains into sea is called Sindh and owes its name to the river (Sanskrit: Sindhu). [15]

Megasthenes' book Indica derives its name from the river's Greek name, "Indós" (Ἰνδός), and describes Nearchus's contemporaneous account of how Alexander the Great crossed the river. The ancient Greeks referred to the Indians (people of present-day northwest India and Pakistan) as "Indói" (Ἰνδοί), literally meaning "the people of the Indus". [16]

Rigveda and the Indus

The Rigveda describes several rivers, including one named "Sindhu". The Rigvedic "Sindhu" is thought to be the present-day Indus river. It is attested 176 times in its text, 94 times in the plural, and most often used in the generic sense of "river". In the Rigveda, notably in the later hymns, the meaning of the word is narrowed to refer to the Indus river in particular, e.g. in the list of rivers mentioned in the hymn of Nadistuti sukta . The Rigvedic hymns apply a feminine gender to all the rivers mentioned therein, except the Bramhaputra and the "Sindhu" which carry the masculine gender. This gender usage could mean that the Sindhu river was believed to be a warrior, and thus one of the greatest among all the rivers in the whole world.[ citation needed ]

Other names

In other languages of the region, the river is known as सिन्धु (Sindhu) in Hindi and Nepali, سنڌو (Sindhu) in Sindhi, سندھ (Sindh) in Shahmukhi Punjabi, ਸਿੰਧ ਨਦੀ (Sindh Nadī) in Gurmukhī Punjabi, اباسين (Abāsin lit. "Father of Rivers") in Pashto, نهر السند (Nahar al-Sind) in Arabic, སེང་གེ་གཙང་པོ། (singi khamban lit. "Lion River" or Lion Spring) in Tibetan, 印度 (Yìndù) in Chinese, and Nilab in Turki.[ citation needed ]


Babur crossing the Indus River. Babur crossing the Indus in the heat of battle.jpg
Babur crossing the Indus River.

The Indus River provides key water resources for Pakistan's economy – especially the breadbasket of Punjab province, which accounts for most of the nation's agricultural production, and Sindh. The word Punjab means "land of five rivers" and the five rivers are Jhelum, Chenab, Ravi, Beas and Sutlej, all of which finally flow into the Indus. The Indus also supports many heavy industries and provides the main supply of potable water in Pakistan.

The ultimate source of the Indus is in Tibet; the river begins at the confluence of the Sengge Zangbo and Gar Tsangpo rivers that drain the Nganglong Kangri and Gangdise Shan (Gang Rinpoche, Mt. Kailash) mountain ranges. The Indus then flows northwest through Ladakh, India and Baltistan into Gilgit, just south of the Karakoram range. The Shyok, Shigar and Gilgit rivers carry glacial waters into the main river. It gradually bends to the south and descends into the Punjab plains at Kalabagh, Pakistan. The Indus passes gigantic gorges 4,500–5,200 metres (15,000–17,000 feet) deep near the Nanga Parbat massif. It flows swiftly across Hazara and is dammed at the Tarbela Reservoir. The Kabul River joins it near Attock. The remainder of its route to the sea is in the plains of the Punjab [17] and Sindh, where the flow of the river becomes slow and highly braided. It is joined by the Panjnad at Mithankot. Beyond this confluence, the river, at one time, was named the Satnad River (sat = "seven", nadī = "river"), as the river now carried the waters of the Kabul River, the Indus River and the five Punjab rivers. Passing by Jamshoro, it ends in a large delta to the South of Thatta in the Sindh province of Pakistan

The Indus is one of the few rivers in the world to exhibit a tidal bore. The Indus system is largely fed by the snows and glaciers of the Himalayas, Karakoram and the Hindu Kush ranges of Tibet, the Indian states of Jammu and Kashmir and Himachal Pradesh and Gilgit-Baltistan region of Pakistan. The flow of the river is also determined by the seasons – it diminishes greatly in the winter, while flooding its banks in the monsoon months from July to September. There is also evidence of a steady shift in the course of the river since prehistoric times – it deviated westwards from flowing into the Rann of Kutch and adjoining Banni grasslands after the 1816 earthquake. [18] [19] Presently, Indus water flows in to the Rann of Kutch during its floods breaching flood banks. [20]

The traditional source of the river is the Senge Khabab or "Lion's Mouth", a perennial spring, not far from the sacred Mount Kailash marked by a long low line of Tibetan chortens. There are several other tributaries nearby, which may possibly form a longer stream than Senge Khabab, but unlike the Senge Khabab, are all dependent on snowmelt. The Zanskar River, which flows into the Indus in Ladakh, has a greater volume of water than the Indus itself before that point. [21]


Extent and major sites of the Indus Valley Civilisation 3000 BC IVC Map.png
Extent and major sites of the Indus Valley Civilisation 3000 BC

The major cities of the Indus Valley Civilisation, such as Harappa and Mohenjo-daro, date back to around 3300 BC, and represent some of the largest human habitations of the ancient world. The Indus Valley Civilisation extended from across northeast Afghanistan to Pakistan and northwest India, [22] with an upward reach from east of Jhelum River to Ropar on the upper Sutlej. The coastal settlements extended from Sutkagan Dor at the Pakistan, Iran border to Kutch in modern Gujarat, India. There is an Indus site on the Amu Darya at Shortughai in northern Afghanistan, and the Indus site Alamgirpur at the Hindon River is located only 28 km (17 mi) from Delhi. To date, over 1,052 cities and settlements have been found, mainly in the general region of the Ghaggar-Hakra River and its tributaries. Among the settlements were the major urban centres of Harappa and Mohenjo-daro, as well as Lothal, Dholavira, Ganeriwala, and Rakhigarhi. Only 90–96 of more than 800 known Indus Valley sites have been discovered on the Indus and its tributaries.[ citation needed ] The Sutlej, now a tributary of the Indus, in Harappan times flowed into the Ghaggar-Hakra River, in the watershed of which were more Harappan sites than along the Indus.

Most scholars believe that settlements of Gandhara grave culture of the early Indo-Aryans flourished in Gandhara from 1700 BC to 600 BC, when Mohenjo-daro and Harappa had already been abandoned.

The word "India" is derived from the Indus River. In ancient times, "India" initially referred to those regions immediately along the east bank of the Indus, but by 300 BC, Greek writers including Herodotus and Megasthenes were applying the term to the entire subcontinent that extends much farther eastward. [23] [24]

The lower basin of the Indus forms a natural boundary between the Iranian Plateau and the Indian subcontinent; this region embraces all or parts of the Pakistani provinces Balochistan, Khyber Pakhtunkhwa, Punjab and Sindh and the countries Afghanistan and India. It was crossed by the invading armies of Alexander, but after his Macedonians conquered the west bank—joining it to the Hellenic Empire, they elected to retreat along the southern course of the river, ending Alexander's Asian campaign. The Indus plains were later dominated by the Persian empire and then the Kushan empire. Over several centuries Muslim armies of Muhammad bin Qasim, Mahmud of Ghazni, Mohammed Ghori, Tamerlane and Babur crossed the river to invade the inner regions of the Punjab and points farther south and east


Indus Valley near Leh.jpg
The Indus River near Leh, Ladakh



Indus River viewed from the Karakoram Highway. Indus river from karakouram highway.jpg
Indus River viewed from the Karakoram Highway.
Indus River near Leh, India, 2014 Indus river near Leh.jpg
Indus River near Leh, India, 2014
Confluence of Indus and Zanskar rivers. The Indus is at the left of the picture, flowing left-to-right; the Zanskar, carrying more water, comes in from the top of the picture. Confluence of Indus and Zanskar rivers.jpg
Confluence of Indus and Zanskar rivers. The Indus is at the left of the picture, flowing left-to-right; the Zanskar, carrying more water, comes in from the top of the picture.

The Indus river feeds the Indus submarine fan, which is the second largest sediment body on the Earth. [25] It consists of around 5 million cubic kilometres of material eroded from the mountains. Studies of the sediment in the modern river indicate that the Karakoram Mountains in northern Pakistan and India are the single most important source of material, with the Himalayas providing the next largest contribution, mostly via the large rivers of the Punjab (Jhelum, Ravi, Chenab, Beas and Sutlej). Analysis of sediments from the Arabian Sea has demonstrated that prior to five million years ago the Indus was not connected to these Punjab rivers which instead flowed east into the Ganga and were captured after that time. [26] Earlier work showed that sand and silt from western Tibet was reaching the Arabian Sea by 45 million years ago, implying the existence of an ancient Indus River by that time. [27] The delta of this proto-Indus river has subsequently been found in the Katawaz Basin, on the Afghan-Pakistan border.

In the Nanga Parbat region, the massive amounts of erosion due to the Indus river following the capture and rerouting through that area is thought to bring middle and lower crustal rocks to the surface. [28]

In November 2011, satellite images showed that the Indus river had re-entered India, feeding Great Rann of Kutch, Little Rann of Kutch and a lake near Ahmedabad known as Nal Sarovar. [20] Heavy rains had left the river basin along with the Lake Manchar, Lake Hemal and Kalri Lake (all in modern-day Pakistan) inundated. This happened two centuries after the Indus river shifted its course westwards following the 1819 Rann of Kutch earthquake.

The Induan Age at start of the Triassic Period of geological time is named for the Indus region.


Footbridge on the Indus River in Pakistan Indus river, Pakistan.jpg
Footbridge on the Indus River in Pakistan
Fishermen on the Indus River, c. 1905 Fishermen on the Indus.jpeg
Fishermen on the Indus River, c. 1905

Accounts of the Indus valley from the times of Alexander's campaign indicate a healthy forest cover in the region, which has now considerably receded. The Mughal Emperor Babur writes of encountering rhinoceroses along its bank in his memoirs (the Baburnama). Extensive deforestation and human interference in the ecology of the Shivalik Hills has led to a marked deterioration in vegetation and growing conditions. The Indus valley regions are arid with poor vegetation. Agriculture is sustained largely due to irrigation works. The Indus river and its watershed has a rich biodiversity. It is home to around 25 amphibian species. [29]


The Indus river dolphin (Platanista indicus minor) is found only in the Indus River. It is subspecies of the South Asian river dolphin. The Indus river dolphin formerly also occurred in the tributaries of the Indus river. According to the World Wildlife Fund it is one of the most threatened cetaceans with only about 1,000 still existing. [30]

There are two otter species in the Indus River basin: the Eurasian otter in the northeastern highland sections and the smooth-coated otter elsewhere in the river basin. The smooth-coated otters in the Indus River represent a subspecies found nowhere else, the Sindh otter (Lutrogale perspicillata sindica). [31]


The Indus River basin has a high diversity, being the home of more than 180 freshwater fish species, [32] including 22 which are found nowhere else. [29] Despite declines of several major species, fishing remains an economically important activity in the Indus. [33] Fish also played a major role in earlier cultures of the region, including the ancient Indus Valley Civilisation where depictions of fish were frequent. The Indus script has a commonly used fish sign, which in its various forms may simply have meant "fish", or referred to stars or gods. [34]

In the uppermost, highest part of the Indus River basin there are relatively few genera and species: Diptychus , Ptychobarbus , Schizopyge , Schizopygopsis and Schizothorax snowtrout, Triplophysa loaches, and the catfish Glyptosternon reticulatum. [32] Going downstream these are soon joined by the golden mahseer Tor putitora (alternatively T. macrolepis, although it often is regarded as a synonym of T. putitora) and Schistura loaches. Downriver from around Thakot, Tarbela, the Kabul–Indus river confluence, Attock Khurd and Peshawar the diversity rises strongly, including many cyprinids ( Amblypharyngodon , Aspidoparia , Barilius , Chela , Cirrhinus , Crossocheilus , Cyprinion , Danio , Devario , Esomus , Garra , Labeo , Naziritor , Osteobrama , Pethia , Puntius , Rasbora , Salmophasia , Securicula and Systomus ), true loaches ( Botia and Lepidocephalus ), stone loaches ( Acanthocobitis and Nemacheilus ), ailiid catfish ( Clupisoma ), bagridae catfish ( Batasio , Mystus , Rita and Sperata ), airsac catfish ( Heteropneustes ), schilbid catfish ( Eutropiichthys ), silurid catfish ( Ompok and Wallago ), sisorid catfish ( Bagarius , Gagata , Glyptothorax and Sisor ), gouramis ( Trichogaster ), nandid leaffish ( Nandus ), snakeheads ( Channa ), spiny eel ( Macrognathus and Mastacembelus ), knifefish ( Notopterus ), glassfish ( Chanda and Parambassis ), clupeids ( Gudusia ), needlefish ( Xenentodon ) and gobies ( Glossogobius ), as well as a few introduced species. [32] As the altitude further declines the Indus basin becomes overall quite slow-flowing as it passes through the Punjab Plain. Major carp become common, and chameleonfish ( Badis ), mullet ( Sicamugil ) and swamp eel ( Monopterus ) appear. [32] In some upland lakes and tributaries of the Punjab region snowtrout and mahseer are still common, but once the Indus basin reaches its lower plain the former group is entirely absent and the latter are rare. [32] Many of the species of the middle sections of the Indus basin are also present in the lower. Notable examples of genera that are present in the lower plain but generally not elsewhere in the Indus River basin are the Aphanius pupfish, Aplocheilus killifish, palla fish (Tenualosa ilisha), catla (Labeo catla), rohu (Labeo rohita) and Cirrhinus mrigala . [32] [33] The last four are medium to large species that are important in fisheries and the last three have strongly declined. [33] The lowermost part of the river and its delta are home to freshwater fish, but also a number of brackish and marine species. [32] This includes including pomfret and prawns. The large delta has been recognized by conservationists as an important ecological region. Here, the river turns into many marshes, streams and creeks and meets the sea at shallow levels.

Palla fish (Tenualosa ilisha) of the river is a delicacy for people living along the river. The population of fish in the river is moderately high, with Sukkur, Thatta, and Kotri being the major fishing centres – all in the lower Sindh course. As a result, damming and irrigation has made fish farming an important economic activity.


The Indus is the most important supplier of water resources to the Punjab and Sindh plains – it forms the backbone of agriculture and food production in Pakistan. The river is especially critical since rainfall is meagre in the lower Indus valley. Irrigation canals were first built by the people of the Indus Valley Civilisation, and later by the engineers of the Kushan Empire and the Mughal Empire. Modern irrigation was introduced by the British East India Company in 1850 – the construction of modern canals accompanied with the restoration of old canals. The British supervised the construction of one of the most complex irrigation networks in the world. The Guddu Barrage is 1,350 m (4,430 ft) long – irrigating Sukkur, Jacobabad, Larkana and Kalat. The Sukkur Barrage serves over 20,000 km2 (7,700 sq mi).

After Pakistan came into existence, a water control treaty signed between India and Pakistan in 1960 guaranteed that Pakistan would receive water from the Indus River and its two tributaries the Jhelum River & the Chenab River independently of upstream control by India. [35]

The Indus Basin Project consisted primarily of the construction of two main dams, the Mangla Dam built on the Jhelum River and the Tarbela Dam constructed on the Indus River, together with their subsidiary dams. [36] The Pakistan Water and Power Development Authority undertook the construction of the Chashma-Jhelum link canal – linking the waters of the Indus and Jhelum rivers – extending water supplies to the regions of Bahawalpur and Multan. Pakistan constructed the Tarbela Dam near Rawalpindi – standing 2,743 metres (9,000 ft) long and 143 metres (470 ft) high, with an 80-kilometre (50 mi) long reservoir. It supports the Chashma Barrage near Dera Ismail Khan for irrigation use and flood control and the Taunsa Barrage near Dera Ghazi Khan which also produces 100,000 kilowatts of electricity. The Kotri Barrage near Hyderabad is 915 metres (3,000 ft) long and provides additional water supplies for Karachi. The extensive linking of tributaries with the Indus has helped spread water resources to the valley of Peshawar, in the Khyber Pakhtunkhwa. The extensive irrigation and dam projects provide the basis for Pakistan's large production of crops such as cotton, sugarcane and wheat. The dams also generate electricity for heavy industries and urban centers.


The Indus River near Skardu, in Gilgit-Baltistan. Indus near Skardu.jpg
The Indus River near Skardu, in Gilgit–Baltistan.
The Dubair Khwarr, a tributary of the Indus, near Shaikhdara, in Khyber Pakhtunkhwa. River Dubair tributary to Indus river.jpeg
The Dubair Khwarr, a tributary of the Indus, near Shaikhdara, in Khyber Pakhtunkhwa.

The inhabitants of the regions are mainly Muslim as Pakistan is an Islamic country through which the Indus river passes and forms a major natural feature and resource are diverse in ethnicity, religion, national and linguistic backgrounds. On the northern course of the river in the state of Jammu and Kashmir in India, live the Buddhist people of Ladakh, of Tibetan stock, and the Dards of Indo-Aryan or Dardic stock and practising Islam. Then it descends into Baltistan, northern Pakistan passing the main Balti city of Skardu. A river from Dubair Bala also drains into it at Dubair Bazar. People living in this area are mainly Kohistani and speak the Kohistani language. Major areas through which the Indus river passes in Kohistan are Dasu, Pattan and Dubair. As it continues through Pakistan, the Indus river forms a distinctive boundary of ethnicity and cultures – upon the western banks the population is largely Pashtun, Baloch, and of other Iranian stock. The eastern banks are largely populated by people of Indo-Aryan stock, such as the Punjabis and the Sindhis. In northern Punjab and the Khyber Pakhtunkhwa, ethnic Pashtun tribes live alongside Dardic people in the hills (Khowar, Kalash, Shina, etc.), Burushos (in Hunza), and Punjabi people.

The people living along the Indus river speak Punjabi and Sindhi on the eastern side (in Punjab and Sindh provinces respectively), Pushto plus Balochi as well as Barohi (in Khyber Pakhtoonkha and Baluchistan provinces). In the province of Sindh, the upper third of the river is inhabited by people speaking Saraiki; which is a somewhat transitional dialect of the Punjabi and Sindhi languages.

Modern issues

Satellite images of the upper Indus River valley, comparing water-levels on 1 August 2009 (top) and 31 July 2010 (bottom) Pakistan Indus flooding July 2010 - MODIS.png
Satellite images of the upper Indus River valley, comparing water-levels on 1 August 2009 (top) and 31 July 2010 (bottom)

The Indus is a strategically vital resource for Pakistan's economy and society. After Pakistan and India declared Independence from the British Raj, the use of the waters of the Indus and its five eastern tributaries became a major dispute between India and Pakistan. The irrigation canals of the Sutlej valley and the Bari Doab were split – with the canals lying primarily in Pakistan and the headwork dams in India disrupting supply in some parts of Pakistan. The concern over India building large dams over various Punjab rivers that could undercut the supply flowing to Pakistan, as well as the possibility that India could divert rivers in the time of war, caused political consternation in Pakistan. Holding diplomatic talks brokered by the World Bank, India and Pakistan signed the Indus Waters Treaty in 1960. The treaty gave India control of the three easternmost rivers of the Punjab, the Sutlej, the Beas and the Ravi, while Pakistan gained control of the three western rivers, the Jhelum, the Chenab and the Indus. India retained the right to use of the western rivers for non-irrigation projects.[ citation needed ]

Large-scale diversion of the river's water for irrigation has raised far-reaching issues. Sediment clogging from poor maintenance of canals has affected agricultural production and vegetation on numerous occasions. Irrigation itself is increasing soil salinization, reducing crop yields and in some cases rendering farmland useless for cultivation. [37] And ecologically, the reduced flow of fresh water and silt into the Indus delta is threatening the area's mangrove forests. [38]

There are also concerns that the Indus River may be shifting its course westwards, although the progression spans centuries.

Indus delta

Originally, the delta used to receive almost all of the water from the Indus river, which has an annual flow of approximately 180 billion cubic metres (240 billion cubic yards), and is accompanied by 400 million tonnes (390 million long tons) of silt. [39] Since the 1940s, dams, barrages and irrigation works have been constructed on the river Indus. The Indus Basin Irrigation System is the "largest contiguous irrigation system developed over the past 140 years" anywhere in the world. [40] This has reduced the flow of water and by 2018, the average annual flow of water below the Kotri barrage was 33 billion cubic metres (43 billion cubic yards), [41] and annual amount of silt discharged was estimated at 100 million tonnes (98 million long tons). [38] As a result, the 2010 Pakistan floods were considered "good news" for the ecosystem and population of the river delta as they brought much needed fresh water. [42] [43] Any further utilization of the river basin water is not economically feasible. [44] [45]

Vegetation and wildlife of the Indus delta are threatened by the reduced inflow of fresh water, along with extensive deforestation, industrial pollution and global warming. Damming has also isolated the delta population of Indus River dolphins from those further upstream. [46]

Effects of climate change on the river

The Tibetan Plateau contains the world's third-largest store of ice. Qin Dahe, the former head of the China Meteorological Administration, said the recent fast pace of melting and warmer temperatures will be good for agriculture and tourism in the short term, but issued a strong warning:

"Temperatures are rising four times faster than elsewhere in China, and the Tibetan glaciers are retreating at a higher speed than in any other part of the world... In the short term, this will cause lakes to expand and bring floods and mudflows.. In the long run, the glaciers are vital lifelines of the Indus River. Once they vanish, water supplies in Pakistan will be in peril." [47]

"There is insufficient data to say what will happen to the Indus," says David Grey, the World Bank's senior water advisor in South Asia. "But we all have very nasty fears that the flows of the Indus could be severely, severely affected by glacier melt as a consequence of climate change," and reduced by perhaps as much as 50 percent. "Now what does that mean to a population that lives in a desert [where], without the river, there would be no life? I don't know the answer to that question," he says. "But we need to be concerned about that. Deeply, deeply concerned." [48]

U.S. diplomat Richard Holbrooke said, shortly before his death in 2010, that he believed that falling water levels in the Indus River "could very well precipitate World War III." [49]


Over the years factories on the banks of the Indus River have increased levels of water pollution in the river and the atmosphere around it. High levels of pollutants in the river have led to the deaths of endangered Indus River Dolphin. The Sindh Environmental Protection Agency has ordered polluting factories around the river to shut down under the Pakistan Environmental Protection Act, 1997. [50] Death of the Indus River Dolphin has also been attributed to fishermen using poison to kill fish and scooping them up. [51] [52] As a result, the government banned fishing from Guddu Barrage to Sukkur. [53]

Coming second after the Yangtze, and together with 9 other rivers, the Indus transports 90 % of all the plastic that reaches the oceans. [54] [55]

2010 floods

Affected areas as of 26 August 2010 Indus flooding 2010 en.svg
Affected areas as of 26 August 2010

Frequently, Indus river is prone to moderate to severe flooding. [56] In July 2010, following abnormally heavy monsoon rains, the Indus River rose above its banks and started flooding. The rain continued for the next two months, devastating large areas of Pakistan. In Sindh, the Indus burst its banks near Sukkur on 8 August, submerging the village of Mor Khan Jatoi. [57] In early August, the heaviest flooding moved southward along the Indus River from severely affected northern regions toward western Punjab, where at least 1,400,000 acres (570,000 ha) of cropland was destroyed, and the southern province of Sindh. [58] As of September 2010, over two thousand people had died and over a million homes had been destroyed since the flooding began. [59] [60]

2011 floods

The 2011 Sindh floods began during the Pakistani monsoon season in mid-August 2011, resulting from heavy monsoon rains in Sindh, eastern Balochistan, and southern Punjab. [61] The floods caused considerable damage; an estimated 434 civilians were killed, with 5.3 million people and 1,524,773 homes affected. [62] Sindh is a fertile region and often called the "breadbasket" of the country; the damage and toll of the floods on the local agrarian economy was said to be extensive. At least 1.7 million acre s (690,000  ha ; 2,700  sq mi ) of arable land were inundated. The flooding followed the previous year's floods, which devastated a large part of the country. [62] Unprecedented torrential monsoon rains caused severe flooding in 16 districts of Sindh. [63]

Barrages, bridges, levees and dams

In Pakistan currently there are three barrages on the Indus: Guddu barrage, Sukkur Barrage, and Kotri barrage (also called Ghulam Muhammad barrage). There are some bridges on river Indus, such as, Dadu Moro Bridge, Larkana Khairpur Indus River Bridge, Thatta-Sujawal bridge, Jhirk-Mula Katiar bridge and recently planned Kandhkot-Ghotki bridge. [64]

Kala Bagh Barrage, Chasma Barrage, and Taunsa Barrage are also built in Punjab on the Indus.

The entire left bank of Indus river in Sind province is protected from river flooding by constructing around 600 km long levees. The right bank side is also leveed from Guddu barrage to Lake Manchar. In response to the levees construction, the river has been aggrading rapidly over the last 20 years leading to breaches upstream of barrages and inundation of large areas. [65]

Tarbela Dam in Pakistan is constructed on the Indus River, while the controversial Kalabagh dam is also being constructed on Indus river.

See also

Related Research Articles

Geography of Pakistan

The Geography of Pakistan is a profound blend of landscapes varying from plains to deserts, forests, hills, and plateaus ranging from the coastal areas of the Arabian Sea in the south to the mountains of the Karakoram range in the north. Pakistan geologically overlaps both with the Indian and the Eurasian tectonic plates where its Sindh and Punjab provinces lie on the north-western corner of the Indian plate while Balochistan and most of the Khyber Pakhtunkhwa lie within the Eurasian plate which mainly comprises the Iranian Plateau. Gilgit-Baltistan and Azad Kashmir lie along the edge of the Indian plate and hence are prone to violent earthquakes where the two tectonic plates collide.

Indo-Gangetic Plain Geographical plain in northern Indian subcontinent

The Indo-Gangetic Plain, also known as the Indus-Ganga Plain and the North Indian River Plain, is a 630-million-acre (2.5-million km2) fertile plain encompassing northern regions of the Indian subcontinent, including most of northern and eastern India, the eastern parts of Pakistan, virtually all of Bangladesh and southern plains of Nepal. The region is named after the Indus and the Ganges rivers and encompasses a number of large urban areas. The plain is bound on the north by the Himalayas, which feed its numerous rivers and are the source of the fertile alluvium deposited across the region by the two river systems. The southern edge of the plain is marked by the Chota Nagpur Plateau. On the west rises the Iranian Plateau.

Ravi River trans-boundary river flowing through Northwestern India and eastern Pakistan

The Ravi River is a transboundary river crossing northwestern India and eastern Pakistan. It is one of six rivers of the Indus System in Punjab region. The waters of Raavi are allocated to India under Indus Water Treaty.

Jhelum River River in India and Pakistan

The Jhelum River is a river in Northern India and Eastern Pakistan. It is the westernmost of the five rivers of the Punjab region, and passes through the Kashmir Valley. It is a tributary of the Indus River and has a total length of about 725 kilometres (450 mi).

Chenab River major river of India and Pakistan

The Chenab River, known traditionally as the Chandrabhaga River, is a major river that flows in India and Pakistan, and is one of the 5 major rivers of the Punjab region. It forms in the upper Himalayas in the Lahaul and Spiti district of Himachal Pradesh state, India, and flows through the Kishtwar, Doda, Ramban, Reasi and Jammu districts of Jammu region in Indian state of Jammu and Kashmir into the plains of the Punjab, Pakistan, before flowing into the Indus River near the city of Uch Sharif. The waters of the Chenab were allocated to Pakistan under the terms of the Indus Waters Treaty.

Sutlej river in India

The Sutlej River (Punjabi: ਸਤਲੁਜ, Sanskrit: शतद्रुम, , is the longest of the five rivers that flow through the historic crossroads region of Punjab in northern India and Pakistan. The Sutlej River is also known as Satadree It is addressed as Shatarudra by the Gorkhalis. It is the easternmost tributary of the Indus River.

Panjnad River river in Pakistan

Panjnad River (Urdu/Punjabi Shahmukhi: پنجند, is a river at the extreme end of Bahawalpur district in Punjab, Pakistan. Panjnad River is formed by successive confluence or merger of the five rivers of the Punjab, namely Jhelum, Chenab, Ravi, Beas and Sutlej. Jhelum and Ravi join Chenab, Beas joins Sutlej, and then Sutlej and Chenab join to form Panjnad 10 miles north of Uch Sharif in Muzaffar Garh district. The combined stream runs southwest for approximately 45 miles and joins the Indus River at Mithankot. The Indus continues and then drains into the Arabian Sea. A barrage on Panjnad has been erected; it provides irrigation channels for Punjab and Sindh provinces south of the Sutlej and east of the Indus rivers.

Sukkur Barrage barrage on the Indus near Sukkur, Sindh province, Pakistan

Sukkur Barrage is a barrage on the River Indus near the city of Sukkur in the Sindh province of Pakistan. The Barrage was built during the British Raj from 1923 to 1932 and was named Lloyd Barrage. The Sukkur Barrage, is the pride of Pakistan’s Irrigation system as it is the largest single Irrigation network of its kind in the world. It irrigates from Sukkur District in the North, to Mirpurkhas/ Tharparkar and Hyderabad districts in the South of Sindh, almost all parts of the Province except few. It is situated about 300 miles North East of Karachi, 3 miles below the Railway Bridge, or the Sukkur Gorge. The introduction of barrage-controlled irrigation system resulted in more timely water supplies for the existing cultivated areas of Sindh Province of Pakistan.

Indus Waters Treaty water-distribution treaty between India and Pakistan

The Indus Waters Treaty is a water-distribution treaty between India and Pakistan, brokered by the World Bank to use the water available in the Indus System of Rivers located in India. The Indus Waters Treaty (IWT) was signed in Karachi on September 19, 1960 by the first Prime Minister of India Pandit Jawaharlal Nehru and then President of Pakistan Ayub Khan.

Guddu Barrage dam in Pakistan

Guddu Barrage is a barrage on the Indus River near Kashmore in the Sindh province of Pakistan. President Iskander Mirza laid the foundation-stone of Guddu Barrage on 2 February 1957. The barrage was completed in 1962 at a cost of 474.8 million rupees and inaugurated by Field Marshal Ayub Khan in 1962.

Taunsa Barrage dam in Pakistan

Taunsa Barrage is a barrage on the River Indus in Taunsa Tehsil of Dera Ghazi Khan District, Punjab province of Pakistan. It is situated 20 kilometres southeast of Taunsa Sharif and 16 kilometres from Kot Addu. This barrage controls water flow in the River Indus for irrigation and flood control purposes. Taunsa Barrage was designated a Ramsar site on 22 March 1996.

The Nadistuti sukta, "hymn of praise of rivers", is hymn 10.75 of the Rigveda.

Trimmu Barrage dam in Pakistan

Trimmu Barrage is a barrage on the River Chenab in the Jhang District of the Punjab province of Pakistan. It is situated downstream of the confluence of the River Jhelum and River Chenab. It is situated some 25 km from the city of Jhang near the village of Atharan Hazari where the River Jhelum flows into the River Chenab.

Islam Barrage

Islam Barrage is a barrage on the River Sutlej in Hasilpur Tehsil of the Punjab province of Pakistan

Rasul Barrage is a barrage on the River Jehlum between Jhelum District and Mandi Bahauddin District of the Punjab province of Pakistan. It is situated 72 km downstream of Mangla Dam.

Nara Canal canal in Pakistan

The Nara Canal is a deepened delta channel of Indus River in Sindh province, Pakistan. It was built as an excavated channel off the left bank of the Indus River into the course of the old Nara River. The canal runs from above the Sukkur Barrage through the Khairpur, Sanghar, Mirpurkhas and Tharparkar Districts to the Jamrao Canal. Nara is the longest canal in Pakistan, running for about 226 mi (364 km). It has a designed capacity of 13,602 cu ft/s (385.2 m3/s), but actually discharges 14,145 cu ft/s (400.5 m3/s). About 2,000,000 acres (8,100 km2) of land are irrigated by this canal. Within the Khairpur District, the canal and its associated wetlands were made into the Nara Game Reserve in 1972.

Left Bank Outfall Drain is a drainage canal in Pakistan. Built between 1987 and 1997 using funding from the World Bank, the canal collects saline water, industrial effluents and Indus river basin floodwater from more than two million hectares of land of Shaheed Benazirabad, Sanghar, Mirpurkhas and Badin districts located in Nara river basin into the Arabian Sea.



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