The Indus ( ) is a

transboundary river A transboundary river is a river that crosses at least one political border, either a border within a state or an international boundary. Bangladesh has the highest number of these rivers, including two of the world's largest rivers, the Ganges and ...

of Asia and a trans-

Himalaya The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 10 ...

n river of

South South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþa ...

and

Central Asia Central Asia, also known as Middle Asia, is a region of Asia that stretches from the Caspian Sea in the west to western China and Mongolia in the east, and from Afghanistan and Iran in the south to Russia in the north. It includes the fo ...

. The river rises in mountain springs northeast of

Mount Kailash Mount Kailash (also Kailasa; ''Kangrinboqê'' or ''Gang Rinpoche''; Tibetan: གངས་རིན་པོ་ཆེ; ; sa, कैलास, ), is a mountain in the Ngari Prefecture, Tibet Autonomous Region of China. It has an altitude of ...

Western Tibet The geography of Tibet consists of the high mountains, lakes and rivers lying between Central, East and South Asia. Traditionally, Western (European and American) sources have regarded Tibet as being in Central Asia, though today's maps show a t ...

, flows northwest through the disputed region of

Kashmir Kashmir () is the northernmost geographical region of the Indian subcontinent. Until the mid-19th century, the term "Kashmir" denoted only the Kashmir Valley between the Great Himalayas and the Pir Panjal Range. Today, the term encompas ...

, Quote: "Kashmir, region of the northwestern Indian subcontinent. It is bounded by the Uygur Autonomous Region of Xinjiang to the northeast and the Tibet Autonomous Region to the east (both parts of China), by the Indian states of Himachal Pradesh and Punjab to the south, by Pakistan to the west, and by Afghanistan to the northwest. The northern and western portions are administered by Pakistan and comprise three areas: Azad Kashmir, Gilgit, and Baltistan, ... The southern and southeastern portions constitute the Indian state of Jammu and Kashmir. The Indian- and Pakistani-administered portions are divided by a "line of control" agreed to in 1972, although neither country recognizes it as an international boundary. In addition, China became active in the eastern area of Kashmir in the 1950s and since 1962 has controlled the northeastern part of Ladakh (the easternmost portion of the region)." bends sharply to the left after the

Nanga Parbat Nanga Parbat ( ur, ) (; ), known locally as Diamer () which means “king of the mountains”, is the ninth-highest mountain on Earth, its summit at above sea level. Lying immediately southeast of the northernmost bend of the Indus River in ...

massif In geology, a massif ( or ) is a section of a planet's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole. The term also refers to a ...

, and flows south-by-southwest through

Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...

, before emptying into the

Arabian Sea The Arabian Sea ( ar, اَلْبَحرْ ٱلْعَرَبِيُّ, Al-Bahr al-ˁArabī) is a region of the northern Indian Ocean bounded on the north by Pakistan, Iran and the Gulf of Oman, on the west by the Gulf of Aden, Guardafui Channe ...

near the port city of

Karachi Karachi (; ur, ; ; ) is the most populous city in Pakistan and 12th most populous city in the world, with a population of over 20 million. It is situated at the southern tip of the country along the Arabian Sea coast. It is the former c ...

. The river has a total

drainage area A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...

of circa . Its estimated annual flow is around , making it one of the 50 largest rivers in the world in terms of average annual flow. Its left-bank

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drai ...

in Ladakh is the

Zanskar River The Zanskar River is the first major tributary of the Indus River, equal or greater in volume than the main river, which flows entirely within Ladakh, India. It originates northeast of the Great Himalayan range and drains both the Himalayas and ...

, and its left-bank tributary in the

plains In geography, a plain is a flat expanse of land that generally does not change much in elevation, and is primarily treeless. Plains occur as lowlands along valleys or at the base of mountains, as coastal plains, and as plateaus or uplands. In ...

is the

Panjnad River The Panjnad River (Punjabi and ur, ) is a river at the extreme end of Bahawalpur district in Punjab, Pakistan. The name ''Panjnad'' means "five rivers", from Persian ''panj'' ("five") and Sanskrit ''nadī́'' ("river").The Panjnad River is form ...

which is formed by the successive confluences of the five Punjab rivers, namely the

Chenab The Chenab River () is a major river that flows in India and Pakistan, and is one of the 5 major rivers of the Punjab region. It is formed by the union of two headwaters, Chandra and Bhaga, which rise in the upper Himalayas in the Lahaul ...

Jhelum Jhelum (Punjabi and ur, ) is a city on the east bank of the Jhelum River, which is located in the district of Jhelum in the north of Punjab province, Pakistan. It is the 44th largest city of Pakistan by population. Jhelum is known for p ...

, Ravi,

Beas Beas is a riverfront town in the Amritsar district of the Indian state of Punjab. Beas lies on the banks of the Beas River. Beas town is mostly located in revenue boundary of Budha Theh with parts in villages Dholo Nangal and Wazir Bhullar. ...

, and

Sutlej The Sutlej or Satluj River () 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 ''Satadru''. It is the easternmost tributary of the In ...

rivers. Its principal right-bank tributaries are the

Shyok The Shyok River is a tributary of the Indus River that flows through northern Ladakh and enters Gilgit–Baltistan, spanning some . The Shyok River originates at the Rimo Glacier, one of the tongues of Siachen Glacier. Its alignment is very ...

Gilgit Gilgit (; Shina: ; ur, ) is the capital city of Gilgit–Baltistan, Pakistan. The city is located in a broad valley near the confluence of the Gilgit River and the Hunza River. It is a major tourist destination in Pakistan, serving as a ...

Kabul Kabul (; ps, , ; , ) is the capital and largest city of Afghanistan. Located in the eastern half of the country, it is also a municipality, forming part of the Kabul Province; it is administratively divided into #Districts, 22 municipal dist ...

, Kurram, and Gomal rivers. Beginning in a mountain spring and fed with

glacier A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such a ...

s and rivers in the Himalayan,

Karakoram The Karakoram is a mountain range in Kashmir region spanning the borders of Pakistan, China, and India, with the northwest extremity of the range extending to Afghanistan and Tajikistan. Most of the Karakoram mountain range falls under the ...

, and

Hindu Kush The Hindu Kush is an mountain range in Central and South Asia to the west of the Himalayas. It stretches from central and western Afghanistan, Quote: "The Hindu Kush mountains run along the Afghan border with the North-West Frontier Province ...

ranges, the river supports the

ecosystem An ecosystem (or ecological system) consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the syst ...

s of

temperate forest A temperate forest is a forest found between the tropical and boreal regions, located in the temperate zone. It is the second largest biome on our planet, covering 25% of the world's forest area, only behind the boreal forest, which covers abou ...

s, plains, and

arid A region is arid when it severely lacks available water, to the extent of hindering or preventing the growth and development of plant and animal life. Regions with arid climates tend to lack vegetation and are called xeric or desertic. Most ...

countryside. The northern part of the Indus Valley, with its tributaries, forms the

Punjab Punjab (; Punjabi Language, Punjabi: پنجاب ; ਪੰਜਾਬ ; ; also Romanization, romanised as ''Panjāb'' or ''Panj-Āb'') is a geopolitical, cultural, and historical region in South Asia, specifically in the northern part of the I ...

region of South Asia, while the lower course of the river ends in a large delta in the southern

Sindh Sindh (; ; ur, , ; historically romanized as Sind) is one of the four provinces of Pakistan. Located in the southeastern region of the country, Sindh is the third-largest province of Pakistan by land area and the second-largest province ...

province of Pakistan. The river has historically been important to many cultures of the region. The 3rd millennium BC saw the rise of

Indus Valley civilisation The Indus Valley Civilisation (IVC), also known as the Indus Civilisation was a Bronze Age civilisation in the northwestern regions of South Asia, lasting from 3300 BCE to 1300 BCE, and in its mature form 2600 BCE to 1900& ...

, a major urban civilization of the Bronze Age. During the 2nd millennium BC, the Punjab region was mentioned in the

Rigveda The ''Rigveda'' or ''Rig Veda'' ( ', from ' "praise" and ' "knowledge") is an ancient Indian collection of Vedic Sanskrit hymns (''sūktas''). It is one of the four sacred canonical Hindu texts ('' śruti'') known as the Vedas. Only on ...

hymns as ''Sapta Sindhu'' and in the

Avesta The Avesta () is the primary collection of religious texts of Zoroastrianism, composed in the Avestan language. The Avesta texts fall into several different categories, arranged either by dialect, or by usage. The principal text in the lit ...

religious texts as ''Saptha Hindu'' (both terms meaning " seven rivers"). Early historical kingdoms that arose in the Indus Valley include

Gandhāra Gandhāra is the name of an ancient region located in the northwestern region of the Indian subcontinent, more precisely in present-day north-west Pakistan and parts of south-east Afghanistan. The region centered around the Peshawar Val ...

, and the Ror dynasty of Sauvīra. The Indus River came into the knowledge of the

Western world The Western world, also known as the West, primarily refers to the various nations and state (polity), states in the regions of Europe, North America, and Oceania.

early in the classical period, when King Darius of

Persia Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...

sent his Greek subject

Scylax of Caryanda Scylax of Caryanda ( el, Σκύλαξ ὁ Καρυανδεύς) was a Greek explorer and writer of the late 6th and early 5th centuries BCE. His own writings are lost, though occasionally cited or quoted by later Greek and Roman authors. The peri ...

to explore the river, c. 515 BC.

Etymology and names

This river was known to the ancient Indians in

Sanskrit Sanskrit (; attributively , ; nominally , , ) is a classical language belonging to the Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had diffused there from the northwest in the late ...

as ''Sindhu'' and the Persians as ''Hindu'' which was regarded by both of them as "the border river". The variation between the two names is explained by the Old Iranian sound change ''*s'' > ''h'', which occurred between 850 and 600 BCE according to

Asko Parpola Asko Parpola (born 12 July 1941, in Forssa) is a Finnish Indologist, current professor emeritus of South Asian studies at the University of Helsinki. He specializes in Sindhology, specifically the study of the Indus script. Biography Parpola is ...

. From the Persian

Achaemenid Empire The Achaemenid Empire or Achaemenian Empire (; peo, 𐎧𐏁𐏂, , ), also called the First Persian Empire, was an ancient Iranian empire founded by Cyrus the Great in 550 BC. Based in Western Asia, it was contemporarily the largest em ...

, the name passed to the

Greeks The Greeks or Hellenes (; el, Έλληνες, ''Éllines'' ) are an ethnic group and nation indigenous to the Eastern Mediterranean and the Black Sea regions, namely Greece, Cyprus, Albania, Italy, Turkey, Egypt, and, to a lesser extent, oth ...

as ''Indós'' (Ἰνδός). It was adopted by the

Romans Roman or Romans most often refers to: *Rome, the capital city of Italy * Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of ancient Rome *''Epistle to the Romans'', shortened to ''Romans'', a lette ...

as ''Indus''. The name India is derived from Indus. The

Indigenous peoples of the Americas The Indigenous peoples of the Americas are the inhabitants of the Americas before the arrival of the European settlers in the 15th century, and the ethnic groups who now identify themselves with those peoples. Many Indigenous peoples of the A ...

are commonly called "Indians" or "Indios", a misnaming that dates to

Christopher Columbus Christopher Columbus * lij, Cristoffa C(or)ombo * es, link=no, Cristóbal Colón * pt, Cristóvão Colombo * ca, Cristòfor (or ) * la, Christophorus Columbus. (; born between 25 August and 31 October 1451, died 20 May 1506) was a ...

's erroneous belief that he had landed near India in 1492, when he actually landed in the Americas. In Sindhi, this river is also known as ''Mehran''. The

Ladakhis Ladakhis or Ladakhi people or Ladakspa are an ethnic group and first-language speakers of the Ladakhi language living in the Ladakh region in the northernmost part of India India, officially the Republic of India (Hindi: ), is a country ...

and

Tibetans The Tibetan people (; ) are an East Asian ethnic group native to Tibet. Their current population is estimated to be around 6.7 million. In addition to the majority living in Tibet Autonomous Region of China, significant numbers of Tibetans live ...

call it ''Senge Tsangpo'' (སེང་གེ་གཙང་པོ།),

Baltis Baltis was an ancient Arabian goddess. She was revered at Carrhae and identified with the planet Venus. Isaac of Antioch mentions Baltis in a text written in the middle of the 5th century CE as a deity worshipped by the Arabs. Baltis here is e ...

call it ''Gemtsuh'' and ''Tsuh-Fo'',

Pashtuns Pashtuns (, , ; ps, پښتانه, ), also known as Pakhtuns or Pathans, are an Iranian ethnic group who are native to the geographic region of Pashtunistan in the present-day countries of Afghanistan and Pakistan. They were historically re ...

call it ''Nilab'', ''Sher Darya'' and ''Abbasin'', while

Sindhis Sindhis ( sd, سنڌي Perso-Arabic: सिन्धी Devanagari; ) are an Indo-Aryan ethnic group who speak the Sindhi language and are native to the province of Sindh in Pakistan. After the partition of British Indian empire in 1947, man ...

call it ''Purali'' and ''Samundar''. The modern name in

Urdu Urdu (;"Urdu"
''

Hindi Hindi (Devanāgarī: or , ), or more precisely Modern Standard Hindi (Devanagari: ), is an Indo-Aryan language spoken chiefly in the Hindi Belt region encompassing parts of northern, central, eastern, and western India. Hindi has been de ...

is ''Sindh'' ( ur, , hi, सिंध), a semi-learned borrowing from the Sanskrit.

Description

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

, Ravi,

and

, all of which finally flow into the Indus. The Indus also supports many heavy industries and provides the main supply of

potable water Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as drinking water. The amount of drinking water required to maintain good health varies, and depends on physical activity level, ag ...

in Pakistan. The total length of the river varies in different sources. The length used in this article is , taken from the ''Himalayan Climate and Water Atlas'' (2015). Historically, the 1909 ''

The Imperial Gazetteer of India ''The Imperial Gazetteer of India'' was a gazetteer of the British Indian Empire, and is now a historical reference work. It was first published in 1881. Sir William Wilson Hunter made the original plans of the book, starting in 1869.< ...

'' gave it as "just over 1,800 miles". A shorter figure of has been widely used in modern sources, as has the one of . The modern ''Encyclopedia Britannica'' was originally published in 1999 with the shorter measurement, but was updated in 2015 to use the longer measurement. Both lengths are commonly found in modern publications; in some cases, both measurements can be found within the same work. An extended figure of circa was announced by a Chinese research group in 2011, based on a comprehensive remeasurement from satellite imagery, and a ground expedition to identify an alternative source point, but detailed analysis has not yet been published. The ultimate source of the Indus is in

Tibet Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning about . It is the traditional homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as Monpa people, ...

, but there is some debate about the exact source. The traditional source of the river is the ''Sênggê Kanbab'' (

Sênggê Zangbo Sengge Zangbo, Sengge Khabab () or Shiquan He () is a river in the Ngari Prefecture in the Tibet Autonomous Region, China that is the source stream of the Indus river, one of the major trans-Himalayan rivers of Central and South Asia. The river ...

) or "Lion's Mouth", a perennial spring not far from the sacred

, marked by a long low line of Tibetan

chortens A stupa ( sa, स्तूप, lit=heap, ) is a mound-like or hemispherical structure containing relics (such as ''śarīra'' – typically the remains of Buddhist monks or nuns) that is used as a place of meditation. In Buddhism, circumambu ...

. There are several other tributaries nearby, which may possibly form a longer stream than Sênggê Kanbab, but unlike the Sênggê Kanbab, are all dependent on

snowmelt In hydrology, snowmelt is surface runoff produced from melting snow. It can also be used to describe the period or season during which such runoff is produced. Water produced by snowmelt is an important part of the annual water cycle in many part ...

. The

, which flows into the Indus in Ladakh, has a greater volume of water than the Indus itself before that point.Albinia (2008), p. 307. An alternative reckoning begins the river around 300 km further upstream, at the

confluence In geography, a confluence (also: ''conflux'') occurs where two or more flowing bodies of water join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); o ...

of the Sengge Zangbo and

Gar Tsangpo Gar Tsangpo (; ), also called Gartang or Gar River, is a headwater of the Indus River in the Ngari Prefecture, Tibet, China. It merges with other headwater, Sênggê Zangbo, near the village of Tashigang to form the Indus River. The combined r ...

rivers, which drain the Nganglong Kangri and Gangdise Shan (Gang Rinpoche, Mt. Kailash) mountain ranges. The 2011 remeasurement suggested the source was a small lake northeast of Mount Kailash, rather than either of the two points previously used. The Indus then flows northwest through

Ladakh Ladakh () is a region administered by India as a union territory which constitutes a part of the larger Kashmir region and has been the subject of dispute between India, Pakistan, and China since 1947. (subscription required) Quote: "Jammu and ...

(Indian-administered Kashmir) and

Baltistan Baltistan ( ur, ; bft, སྦལ་ཏི་སྟཱན, script=Tibt), also known as Baltiyul or Little Tibet ( bft, སྦལ་ཏི་ཡུལ་།, script=Tibt), is a mountainous region in the Pakistani-administered territory of Gilg ...

and

(Pakistan-administered Kashmir), just south of the

range. The

Shigar Shigar () is the headquarter of its namesake district and tehsil in the Baltistan division of Gilgit–Baltistan in northern Pakistan. It is located at the bank of Shigar River in the most remote and dramatic part of the region. It is a popular ...

and

rivers carry glacial waters into the main river. It gradually bends to the south and descends into the Punjab plains at

Kalabagh Kalabagh ( ur, ) is a town and union council of Mianwali District in the Punjab province of Pakistan. It is part of Isakhel Tehsil. It is located on the western bank of the Indus River. It was the seat of the ''nawab'' of Kalabagh, who lived in ...

, Pakistan. The Indus passes gigantic gorges deep near the

. It flows swiftly across Hazara and is dammed at the Tarbela Reservoir. The Kabul River joins it near

Attock Attock ( Punjabi and Urdu: ), formerly known as Campbellpur (), is a historical city located in the north of Pakistan's Punjab Province, not far from the country's capital Islamabad. It is the headquarters of the Attock District and is 61st larg ...

. The remainder of its route to the sea is in the plains of the Punjab and Sindh, where the flow of the river becomes slow and highly braided. It is joined by the

Panjnad The Panjnad River ( Punjabi and ur, ) is a river at the extreme end of Bahawalpur district in Punjab, Pakistan. The name ''Panjnad'' means "five rivers", from Persian ''panj'' ("five") and Sanskrit ''nadī́'' ("river").The Panjnad River is for ...

Mithankot Mithankot ( ur, ) also known as Kotmithan, is a city in Rajanpur District in Punjab, Pakistan. Mithankot is located on the west bank of the Indus River, a short distance downstream from its junction with Panjnad River. Most of its inhabitants ar ...

. 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 Jamshoro ( sd, ڄام شورو, ur, ) is a city and the capital of Jamshoro District, located in Sindh, Pakistan. It is located on the right bank of the Indus River, approximately northwest of Hyderabad and northeast from the provincial capi ...

, it ends in a large delta to the South of

Thatta Thatta ( sd, ٺٽو; ) is a city in the Pakistani province of Sindh. Thatta was the medieval capital of Sindh, and served as the seat of power for three successive dynasties. Thatta's historic significance has yielded several monuments in and ...

in the

province of Pakistan. The Indus is one of the few rivers in the world to exhibit a

tidal bore Tidal is the adjectival form of tide. Tidal may also refer to: * ''Tidal'' (album), a 1996 album by Fiona Apple * Tidal (king), a king involved in the Battle of the Vale of Siddim * TidalCycles, a live coding environment for music * Tidal (servic ...

. The Indus system is largely fed by the snow and glaciers of the

Himalayas The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 100 ...

, Karakoram and the

ranges. The flow of the river is also determined by the seasons – it diminishes greatly in the winter, while flooding its banks in the

monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscil ...

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 The Rann of Kutch (alternately spelled as Kuchchh) is a large area of salt marshes that span the border between India and Pakistan. It is located in Gujarat (primarily the Kutch district), India, and in Sindh, Pakistan. It is divided into t ...

and adjoining

Banni grasslands Banni Grasslands Reserve or Banni grasslands form a belt of arid grassland ecosystem on the outer southern edge of the desert of the marshy salt flats of Rann of Kutch in Kutch District, Gujarat State, India. They are known for rich wildlife a ...

after the 1816

earthquake An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from ...

. , Indus water flows in to the

during its floods breaching

flood bank A levee (), dike (American English), dyke (Commonwealth English), embankment, floodbank, or stop bank is a structure that is usually earthen and that often runs parallel to the course of a river in its floodplain or along low-lying coastli ...

History

The major cities of the

Indus Valley Civilisation The Indus Valley Civilisation (IVC), also known as the Indus Civilisation was a Bronze Age civilisation in the northwestern regions of South Asia, lasting from 3300 BCE to 1300 BCE, and in its mature form 2600 BCE to 1900&n ...

, such as

Harappa Harappa (; Urdu/ pnb, ) is an archaeological site in Punjab, Pakistan, about west of Sahiwal. The Bronze Age Harappan civilisation, now more often called the Indus Valley Civilisation, is named after the site, which takes its name from a mode ...

and

Mohenjo-daro Mohenjo-daro (; sd, موئن جو دڙو'', ''meaning 'Mound of the Dead Men';Jhelum River The Jhelum River (/dʒʰeːləm/) is a river in the northern Indian subcontinent. It originates at Verinag and flows through the Indian administered territory of Jammu and Kashmir, to the Pakistani-administered territory of Kashmir, and then ...

Ropar Rupnagar (; formerly known as Ropar is a city and a municipal council in Rupnagar district in the Indian state of Punjab. Rupnagar is a newly created fifth Divisional Headquarters of Punjab comprising Rupnagar, Mohali, and its adjoining distr ...

on the upper Sutlej. The coastal settlements extended from

Sutkagan Dor Sutkagan Dor (or Sutkagen Dor) is the westernmost known archaeological site of the Indus Valley civilization. It is located about 480 km west of Karachi on the Makran coast near Gwadar, close to the Iranian border, in Pakistan's Baluchista ...

at the Pakistan,

Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...

border to Kutch in modern

Gujarat Gujarat (, ) is a state along the western coast of India. Its coastline of about is the longest in the country, most of which lies on the Kathiawar peninsula. Gujarat is the fifth-largest Indian state by area, covering some ; and the ninth ...

, India. There is an Indus site on the

Amu Darya The Amu Darya, tk, Amyderýa/ uz, Amudaryo// tg, Амударё, Amudaryo ps, , tr, Ceyhun / Amu Derya grc, Ὦξος, Ôxos (also called the Amu, Amo River and historically known by its Latin language, Latin name or Greek ) is a major rive ...

at Shortughai in northern Afghanistan, and the Indus site

Alamgirpur Alamgirpur is an archaeological site of the Indus Valley civilization that thrived along Yamuna River (c. 3300–1300 BC) from the Harappan- Bara period, located in Meerut district, Uttar Pradesh, India. It is the easternmost site of the civiliza ...

at the

Hindon River Hindon River, a tributary of Yamuna river, is a river in India that originates in the Saharanpur district, from the Shakumbhari devi range Upper Sivaliks in Uttar Pradesh. The river is entirely rainfed and has an approximate catchment area of . ...

is located only from

Delhi Delhi, officially the National Capital Territory (NCT) of Delhi, is a city and a union territory of India containing New Delhi, the capital of India. Straddling the Yamuna river, primarily its western or right bank, Delhi shares borders w ...

. To date, over 1,052 cities and settlements have been found, mainly in the general region of the

Ghaggar-Hakra River The Ghaggar-Hakra River is an intermittent river in India and Pakistan that flows only during the monsoon season. The river is known as Ghaggar in India, before the Ottu barrage, and as the Hakra in Pakistan, downstream of the barrage, ending ...

and its tributaries. Among the settlements were the major urban centres of Harappa and Mohenjo-daro, as well as

Lothal Lothal () was one of the southernmost sites of the ancient Indus Valley civilisation, located in the Bhāl region of the modern state of Gujarāt. Construction of the city is believed to have begun around 2200 BCE. Archaeological Survey of ...

Dholavira Dholavira ( gu, ધોળાવીરા) is an archaeological site at Khadirbet in Bhachau Taluka of Kutch District, in the state of Gujarat in western India, which has taken its name from a modern-day village south of it. This village is f ...

Ganeriwala Ganweriwal ( ur, pa, ), more commonly known as Ganweriwala, is an archaeological site in the Cholistan Desert of southern Punjab, Pakistan. It was one of the largest cities within the Indus Valley civilisation, one of the most extensive Bronze ...

, and

Rakhigarhi Rakhigarhi or Rakhi Garhi is a village and an archaeological site belonging to the Indus Valley civilisation in Hisar District of the northern Indian state of Haryana, situated about 150 km northwest of Delhi. It was part of the mature pha ...

. Only 40 Indus Valley sites have been discovered on the Indus and its tributaries. However, it is notable that majority of the Indus script seals and inscribed objects discovered were found at sites along the Indus river. Most scholars believe that settlements of

Gandhara grave culture The Gandhara grave culture, also called Swat culture, or Swat Protohistoric Graveyards Complex, emerged ''c.'' 1400 BCE and lasted until 800 BCE, as recent fieldwork, along with subsequent analyses, have shown there are no burials with these ...

of the early

Indo-Aryans Indo-Aryan peoples are a diverse collection of Indo-European peoples speaking Indo-Aryan languages in the Indian subcontinent. Historically, Aryan were the Indo-European pastoralists who migrated from Central Asia into South Asia and intr ...

flourished in

Gandhara Gandhāra is the name of an ancient region located in the northwestern region of the Indian subcontinent, more precisely in present-day north-west Pakistan and parts of south-east Afghanistan. The region centered around the Peshawar Vall ...

from 1700 BC to 600 BC, when

Mohenjo-daro Mohenjo-daro (; sd, موئن جو دڙو'', ''meaning 'Mound of the Dead Men';Rigveda The ''Rigveda'' or ''Rig Veda'' ( ', from ' "praise" and ' "knowledge") is an ancient Indian collection of Vedic Sanskrit hymns (''sūktas''). It is one of the four sacred canonical Hindu texts ('' śruti'') known as the Vedas. Only on ...

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 Nadistuti sukta (Sanskrit: नदिस्तुति सूक्त), or "the hymn in praise of rivers", is 75th hymn (''sukta'') of 10th MandalaTogether with 1st Mandala, 10th Mandala forms the latest part of the Rigveda of the Rigveda. N ...

''. The Rigvedic hymns apply a feminine gender to all the rivers mentioned therein, except for the

Brahmaputra The Brahmaputra is a trans-boundary river which flows through Tibet, northeast India, and Bangladesh. It is also known as the Yarlung Tsangpo in Tibetan, the Siang/Dihang River in Arunachali, Luit in Assamese, and Jamuna River in Bangla. It ...

. 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, where are

Punjab Punjab (; Punjabi: پنجاب ; ਪੰਜਾਬ ; ; also romanised as ''Panjāb'' or ''Panj-Āb'') is a geopolitical, cultural, and historical region in South Asia, specifically in the northern part of the Indian subcontinent, comprising ...

and

now but by 300 BC, Greek writers including

Herodotus Herodotus ( ; grc, , }; BC) was an ancient Greek historian and geographer from the Greek city of Halicarnassus, part of the Persian Empire (now Bodrum, Turkey) and a later citizen of Thurii in modern Calabria ( Italy). He is known f ...

and

Megasthenes Megasthenes ( ; grc, Μεγασθένης, c. 350 BCE– c. 290 BCE) was an ancient Greek historian, diplomat and Indian ethnographer and explorer in the Hellenistic period. He described India in his book '' Indica'', which is now lost, but has ...

were applying the term to the entire subcontinent that extends much farther eastward. The lower basin of the Indus forms a natural boundary between the

Iranian Plateau The Iranian plateau or Persian plateau is a geological feature in Western Asia, Central Asia, and South Asia. It comprises part of the Eurasian Plate and is wedged between the Arabian Plate and the Indian Plate; situated between the Zagros ...

and the

Indian subcontinent The Indian subcontinent is a list of the physiographic regions of the world, physiographical region in United Nations geoscheme for Asia#Southern Asia, Southern Asia. It is situated on the Indian Plate, projecting southwards into the Indian O ...

; this region embraces all or parts of the Pakistani provinces

Balochistan Balochistan ( ; bal, بلۏچستان; also romanised as Baluchistan and Baluchestan) is a historical region in Western and South Asia, located in the Iranian plateau's far southeast and bordering the Indian Plate and the Arabian Sea coastline. ...

Khyber Pakhtunkhwa Khyber Pakhtunkhwa (; ps, خېبر پښتونخوا; Urdu, Hindko: خیبر پختونخوا) commonly abbreviated as KP or KPK, is one of the Administrative units of Pakistan, four provinces of Pakistan. Located in the Geography of Pakistan, ...

and

and the countries Afghanistan and India. The first West Eurasian empire to annex the Indus Valley was the

Persian Empire The Achaemenid Empire or Achaemenian Empire (; peo, wikt:𐎧𐏁𐏂𐎶, 𐎧𐏁𐏂, , ), also called the First Persian Empire, was an History of Iran#Classical antiquity, ancient Iranian empire founded by Cyrus the Great in 550 BC. Bas ...

, during the reign of

Darius the Great Darius I ( peo, 𐎭𐎠𐎼𐎹𐎺𐎢𐏁 ; grc-gre, Δαρεῖος ; – 486 BCE), commonly known as Darius the Great, was a Persian ruler who served as the third King of Kings of the Achaemenid Empire, reigning from 522 BCE until his d ...

. During his reign, the Greek explorer

was commissioned to explore the course of the Indus. It was crossed by the invading armies of

Alexander Alexander is a male given name. The most prominent bearer of the name is Alexander the Great, the king of the Ancient Greek kingdom of Macedonia who created one of the largest empires in ancient history. Variants listed here are Aleksandar, Al ...

, but after his

Macedon Macedonia (; grc-gre, Μακεδονία), also called Macedon (), was an ancient kingdom on the periphery of Archaic and Classical Greece, and later the dominant state of Hellenistic Greece. The kingdom was founded and initially ruled by ...

ians conquered the west bank—joining it to the Hellenic world, they elected to retreat along the southern course of the river, ending Alexander's Asian campaign. Alexander's admiral

Nearchus Nearchus or Nearchos ( el, Νέαρχος; – 300 BC) was one of the Greek officers, a navarch, in the army of Alexander the Great. He is known for his celebrated expeditionary voyage starting from the Indus River, through the Persian Gulf and e ...

set out from the Indus Delta to explore the

Persian Gulf The Persian Gulf ( fa, خلیج فارس, translit=xalij-e fârs, lit=Gulf of Persis, Fars, ), sometimes called the ( ar, اَلْخَلِيْجُ ٱلْعَرَبِيُّ, Al-Khalīj al-ˁArabī), is a Mediterranean sea (oceanography), me ...

, until reaching the Tigris River. The Indus Valley was later dominated by the

Mauryan The Maurya Empire, or the Mauryan Empire, was a geographically extensive Iron Age historical power in the Indian subcontinent based in Magadha, having been founded by Chandragupta Maurya in 322 BCE, and existing in loose-knit fashion until ...

and

Kushan Empire The Kushan Empire ( grc, Βασιλεία Κοσσανῶν; xbc, Κυϸανο, ; sa, कुषाण वंश; Brahmi: , '; BHS: ; xpr, 𐭊𐭅𐭔𐭍 𐭇𐭔𐭕𐭓, ; zh, 貴霜 ) was a syncretic empire, formed by the Yuezhi, i ...

Indo-Greek Kingdom The Indo-Greek Kingdom, or Graeco-Indian Kingdom, also known historically as the Yavana Kingdom (Yavanarajya), was a Hellenistic-era Greek kingdom covering various parts of Afghanistan and the northwestern regions of the Indian subcontinent ( ...

Indo-Scythians Indo-Scythians (also called Indo-Sakas) were a group of nomadic Iranian peoples of Scythian origin who migrated from Central Asia southward into modern day Pakistan and Northwestern India from the middle of the 2nd century BCE to the 4th centur ...

and

Hepthalites The Hephthalites ( xbc, ηβοδαλο, translit= Ebodalo), sometimes called the White Huns (also known as the White Hunas, in Iranian as the ''Spet Xyon'' and in Sanskrit as the ''Sveta-huna''), were a people who lived in Central Asia during th ...

. Over several centuries

Muslim Muslims ( ar, المسلمون, , ) are people who adhere to Islam, a monotheistic religion belonging to the Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God of Abrah ...

armies of

Muhammad ibn al-Qasim Muḥammad ibn al-Qāsim al-Thaqāfī ( ar, محمد بن القاسم الثقفي; –) was an Arab military commander in service of the Umayyad Caliphate who led the Muslim conquest of Sindh (part of modern Pakistan), inaugurating the Umayya ...

Mahmud of Ghazni Yamīn-ud-Dawla Abul-Qāṣim Maḥmūd ibn Sebüktegīn ( fa, ; 2 November 971 – 30 April 1030), usually known as Mahmud of Ghazni or Mahmud Ghaznavi ( fa, ), was the founder of the Turkic Ghaznavid dynasty, ruling from 998 to 1030. At th ...

Muhammad of Ghor Mu'izz ad-Din Muhammad ibn Sam ( fa, معز الدین محمد بن سام), also Mu'izz ad-Din Muhammad Ghori, also Ghūri ( fa, معز الدین محمد غوری) (1144 – March 15, 1206), commonly known as Muhammad of Ghor, also Gh ...

Timur Timur ; chg, ''Aqsaq Temür'', 'Timur the Lame') or as ''Sahib-i-Qiran'' ( 'Lord of the Auspicious Conjunction'), his epithet. ( chg, ''Temür'', 'Iron'; 9 April 133617–19 February 1405), later Timūr Gurkānī ( chg, ''Temür Kür ...

and

Babur Babur ( fa, , lit= tiger, translit= Bābur; ; 14 February 148326 December 1530), born Mīrzā Zahīr ud-Dīn Muhammad, was the founder of the Mughal Empire in the Indian subcontinent. He was a descendant of Timur and Genghis Khan through his ...

crossed the river to invade Sindh and

, providing a gateway to the Indian subcontinent.

Geography

Tributaries

* Gar River *

Gilgit River The Gilgit River () is a tributary of the Indus River, and flows through the Gupis-Yasin, Ghizer and Gilgit districts of Gilgit-Baltistan. The Gilgit River starts from Shandur Lake, and joins the Indus River at near towns of Juglot and Bunji, ...

Gomal River Gomal River ( ur, , ps, ګومل سیند، ګومل دریاب) is a river in Afghanistan and Pakistan. It rises in the northern part of Afghanistan's Paktika Province. It joins the Indus River 20 miles south of Dera Ismail Khan, Khyber Pakh ...

Hunza River Hunza River ( ur, ) is the principal river of Hunza in Gilgit–Baltistan, Pakistan It is formed by the confluence of the Chapursan and Khunjerab ''nalas'' (gorges) which are fed by glaciers. It is joined by the Gilgit River and the Naltar R ...

* Kabul River *

Kunar River The Kūnaṛ River ( ps, د کونړ سيند), also known in its upper reaches as the Mastuj ( ps, مستوج سين), Chitral ( khw, کونڑ سين; ur, دریائے کونڑ), or Kama River ( khw, کامې سين), is about long, located ...

Kurram River The Kurrama River ( ps, د کورمې سيند), or Kurram River, originates from watershed of Spin Ghar in the Paktia Province of Afghanistan and the Kurram District of Pakistan, flows through North Waziristan District, North Waziristan and Khy ...

Chenab River The Chenab River () is a major river that flows in India and Pakistan, and is one of the 5 major rivers of the Punjab region. It is formed by the union of two headwaters, Chandra and Bhaga, which rise in the upper Himalayas in the Lahaul regi ...

***

Jhelum River The Jhelum River (/dʒʰeːləm/) is a river in the northern Indian subcontinent. It originates at Verinag and flows through the Indian administered territory of Jammu and Kashmir, to the Pakistani-administered territory of Kashmir, and then ...

***

Ravi River The Ravi River () is a transboundary river crossing northwestern India and eastern Pakistan. It is one of five rivers associated with the Punjab region. Under the Indus Waters Treaty of 1960, the waters of the Ravi and two other rivers were ...

Satluj River The Sutlej or Satluj River () 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 ''Satadru''. It is the easternmost tributary of the In ...

***

Beas River The Beas River (Sanskrit: ; Hyphasis in Ancient Greek) is a river in north India. The river rises in the Himalayas in central Himachal Pradesh, India, and flows for some to the Sutlej River in the Indian state of Punjab. Its total length is ...

Shyok River The Shyok River is a tributary of the Indus River that flows through northern Ladakh and enters Gilgit–Baltistan, spanning some . The Shyok River originates at the Rimo Glacier, one of the tongues of Siachen Glacier. Its alignment is very ...

Soan River The Soan River ( ur, ), also referred to as the Swan, Sawan, or Sohan, is a river in Punjab (Pakistan), Punjab, Pakistan. Location and geography The Soan River is a stream in the Pothohar Plateau, Pothohar or North Punjab region of Pakistan, ...

* Suru River *

Swat River The Swat River ( ur, , ps, سوات سیند) is a perennial river in the northern region of Khyber-Pakhtunkhwa Province, Pakistan. The river's source is in the high glacial valleys of the Hindu Kush mountains, where it then flows into the sc ...

Zhob River Zhob River ( ps, ږوب سيند; ) is located in Balochistan and Khyber Pakhtunkhwa, Pakistan. The total length of the Zhob River is 410 km, and it flows on a generally northeasterly course. Etymology In the Pashto language, ''Zhob'' means ...

Geology

Indus is an

antecedent river An antecedent stream is a stream that maintains its original course and pattern despite the changes in underlying rock topography. A stream with a dendritic drainage pattern, for example, can be subject to slow tectonic uplift. However, as the upli ...

, meaning that it existed before the Himalayas and entrenched itself while they were rising. The Indus river feeds the Indus

submarine fan Abyssal fans, also known as deep-sea fans, underwater deltas, and submarine fans, are underwater geological structures associated with large-scale sediment deposition and formed by turbidity currents. They can be thought of as an underwater ve ...

, which is the second largest sediment body on the Earth. 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 The Karakoram is a mountain range in Kashmir region spanning the borders of Pakistan, China, and India, with the northwest extremity of the range extending to Afghanistan and Tajikistan. Most of the Karakoram mountain range falls under the ...

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

rivers which instead flowed east into the

Ganga The Ganges ( ) (in India: Ganga ( ); in Bangladesh: Padma ( )). "The Ganges Basin, known in India as the Ganga and in Bangladesh as the Padma, is an international river to which India, Bangladesh, Nepal and China are the riparian states." is ...

and were captured after that time. 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. The delta of this proto-Indus river has subsequently been found in the Katawaz Basin, on the Afghan-Pakistan border. In the

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. In November 2011, satellite images showed that the Indus river had re-entered India, feeding

Great Rann of Kutch The Great Rann of Kutch (or Rann of Kutch seasonal salt marsh) is a salt marsh in the Thar Desert in the Kutch District of Gujarat, India. It is about 7500 km2 (2900 sq miles) in area and is reputed to be one of the largest salt de ...

Little Rann of Kutch The Little Rann of Kutch is a salt marsh which is part of the Rann of Kutch in Kutch district, Gujarat, India. Attractions Indian wild ass sanctuary The Little Rann of Kutch is home to the Indian wild ass (khur). To conserve this species ...

and a lake near

Ahmedabad Ahmedabad ( ; Gujarati: Amdavad ) is the most populous city in the Indian state of Gujarat. It is the administrative headquarters of the Ahmedabad district and the seat of the Gujarat High Court. Ahmedabad's population of 5,570,585 (per t ...

known as

Nal Sarovar NAL or Nal may refer to: In organizations: * Nal Sarovar Bird Sanctuary, in India * National Aerospace Laboratories, India * National Aerospace Laboratory of Japan * National Alliance of Liberals, a political party in Ghana * United States Nation ...

. Heavy rains had left the river basin along with the

Lake Manchar Lake Manchar ( sd, منڇر ڍنڍ, ), also spelled Manchhar, is the largest natural freshwater lake in Pakistan, and is one of South Asia's largest. It is located west of the Indus River, in Jamshoro District and Dadu District, Sindh - 18 k ...

, Lake Hemal and

Kalri Lake Keenjhar Lake ( sd, ڪینجھر ڍنڍ) commonly called Malik Lake ( ur, کلری Malik , sd, Maik ڍنڍ ) is located in Thatta District of Sindh the province of Pakistan. It is situated about from the city of Thatta. It is the largest fr ...

(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 1819 Rann of Kutch earthquake occurred at about 18:45 to 18:50 local time on 16 June. It had an estimated magnitude ranging from 7.7 to 8.2 on the moment magnitude scale and a maximum perceived intensity of XI (''Extreme'') on the Mercalli i ...

. The

Induan The Induan is the first age of the Early Triassic epoch in the geologic timescale, or the lowest stage of the Lower Triassic series in chronostratigraphy. It spans the time between 251.902 Ma and Ma (million years ago). The Induan is sometimes ...

Age at start of the

Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period ...

Period of geological time is named for the Indus region.

Wildlife

Accounts of the Indus valley from the times of Alexander's campaign indicate a healthy forest cover in the region. The Mughal Emperor

writes of encountering rhinoceroses along its bank in his memoirs (the

Baburnama The ''Bāburnāma'' ( chg, ; literally: ''"History of Babur"'' or ''"Letters of Babur"''; alternatively known as ''Tuzk-e Babri'') is the memoirs of Ẓahīr-ud-Dīn Muhammad Bābur (1483–1530), founder of the Mughal Empire and a great-great- ...

). Extensive deforestation and human interference in the ecology of the

Shivalik Hills The Sivalik Hills, also known as the Shivalik Hills and Churia Hills, are a mountain range of the outer Himalayas that stretches over about from the Indus River eastwards close to the Brahmaputra River, spanning the northern parts of the Indi ...

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.

Mammals

The

Indus river dolphin The Indus river dolphin (''Platanista minor''), also known as the ''bhulan'' in Urdu and Sindhi, is a species of toothed whale in the family Platanistidae. It is endemic to the Indus River Basin of Pakistan and northwestern India. This dolphin ...

(''Platanista indicus minor'') is found only in the Indus River. It is subspecies of the

South Asian river dolphin South Asian river dolphins are toothed whales in the genus ''Platanista'', which inhabit fresh water habitats in the northern Indian subcontinent. They were historically considered to be one species (''P. gangetica'') with the Ganges river dolp ...

. The Indus river dolphin formerly also occurred in the tributaries of the Indus river. According to the

World Wildlife Fund The World Wide Fund for Nature Inc. (WWF) is an international non-governmental organization founded in 1961 that works in the field of wilderness preservation and the reduction of human impact on the environment. It was formerly named the Wo ...

it is one of the most threatened

cetacea Cetacea (; , ) is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively carnivorous diet. They propel them ...

ns with only about 1,000 still existing. There are two otter species in the Indus River basin: the

Eurasian otter The Eurasian otter (''Lutra lutra''), also known as the European otter, Eurasian river otter, common otter, and Old World otter, is a semiaquatic mammal native to Eurasia. The most widely distributed member of the otter subfamily (Lutrinae) of ...

in the northeastern highland sections and the

smooth-coated otter The smooth-coated otter (''Lutrogale perspicillata'') is an otter species occurring in most of the Indian subcontinent and Southeast Asia, with a disjunct population in Iraq. It is listed as Vulnerable on the IUCN Red List since 1996 and is thre ...

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'').

Fish

The Indus River basin has a high diversity, being the home of more than 180 freshwater fish species, including 22 which are found nowhere else. 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 The Indus script, also known as the Harappan script, is a corpus of symbols produced by the Indus Valley Civilisation. Most inscriptions containing these symbols are extremely short, making it difficult to judge whether or not they constituted ...

has a commonly used fish sign, which in its various forms may simply have meant "fish", or referred to stars or gods. In the uppermost, highest part of the Indus River basin there are relatively few genera and species: ''

Diptychus ''Diptychus'' is a genus of cyprinid freshwater fish, consisting of two species found in Himalaya and the Tibetan Plateau of China, India, Nepal and Pakistan, ranging west to the Tien Shan Mountains and Central Asia.Li, G.; Y. Tang; R. Zhang; and ...

'', ''

Ptychobarbus ''Ptychobarbus'' is a genus of cyprinid fish that is found in rivers, streams and lakes in the Himalayas and Tibetan Plateau of China, India, Nepal and Pakistan, extending into the highlands of Afghanistan. They reach up to in weight and about ...

'', ''

Schizopyge ''Schizopyge'' is a genus of cyprinid freshwater fish found in Pakistan and the northwestern part of India. ''Schizopyge'' is closely related to ''Schizothorax'' and some species have historically been moved between the two genera. Species There ...

'', ''

Schizopygopsis ''Schizopygopsis'' is a genus of cyprinid fish. Most species are endemic to river basins in the Himalayas and Qinghai–Tibet Plateau of China, but ''S. stoliczkai'' extends into the highlands of Afghanistan, Iran, northern India, Kyrgyzstan, Pak ...

'' and ''

Schizothorax ''Schizothorax'' is a genus of cyprinid fish found in southern and western China, through northern South Asia (Himalaya) and Central Asia, to Iran, with a single species, ''S. prophylax'', in Turkey.Yang, J.; J.X. Yang; and X.Y. Chen (2012). A re ...

'' snowtrout, ''

Triplophysa ''Triplophysa'' is a genus of fish in the family Nemacheilidae found mainly in and around the Qinghai-Tibet Plateau in China. Currently, the genus is a mixed assemblage of species. Some lineages have been identified and treated as subgenera (''H ...

'' loaches, and the catfish ''

Glyptosternon ''Glyptosternon'' is a genus of sisorid catfishes native to Asia. Species There are currently four recognized species in this genus: * '' Glyptosternon akhtari'' Silas, 1952 * '' Glyptosternon maculatum'' (Regan, 1905) * '' Glyptosternon reticu ...

reticulatum''. Going downstream these are soon joined by the golden mahseer ''

Tor putitora ''Tor putitora'', the Putitor mahseer, Himalayan mahseer, or golden mahseer, is an endangered species of cyprinid fish that is found in rapid streams, riverine pools, and lakes in the Himalayan region. Its native range is within the basins of th ...

'' (alternatively ''T. macrolepis'', although it often is regarded as a synonym of ''T. putitora'') and ''

Schistura ''Schistura'' is a genus of fish in the stone loach family Nemacheilidae native to the streams and rivers of the southern and eastern Asia. Some of these species are troglobitic A troglobite (or, formally, troglobiont) is an animal species, or ...

'' loaches. Downriver from around

Thakot Thakot or Takot ( ur, ; ps, ) is a tribal town on the Indus River in Battagram District of Khyber Pakhtunkhwa, Pakistan. It is also one of twenty Union Councils of Battagram District, and one of twelve in Battagram Tehsil. Thakot is located mi ...

Tarbela Tarbela ( pnb, ) or Torbela ( ps, توربېلا) is one of the 44 union councils, administrative subdivision, of Haripur District in the Khyber Pakhtunkhwa province of Pakistan. The name comes from the words ''tor'' (Pashto for "black") and ''be ...

, the

–Indus river confluence,

Attock Khurd Attock Khurd ( ur, ; ''"''Little Attock''"'') is a small town located beside the Indus River in the Attock District of Punjab Province in Pakistan. Khurd and Kalan are Persian words, themselves derived from Sanskrit (''Kshudra'' means "small ...

and

Peshawar Peshawar (; ps, پېښور ; hnd, ; ; ur, ) is the sixth most populous city in Pakistan, with a population of over 2.3 million. It is situated in the north-west of the country, close to the International border with Afghanistan. It is ...

the diversity rises strongly, including many cyprinids (''

Amblypharyngodon The carplets (''Amblypharyngodon'') are a genus of fishes in the family Cyprinidae. They are up to in total length and inhabit a wide range of slow-moving or stagnant freshwater habitats in South and Mainland Southeast Asia. Species There are 5 ...

'', '' Aspidoparia'', ''

Barilius ''Barilius'' is a large genus of cyprinid freshwater fishes native to Asia. Four species in this genus have been described since 2012. Species There are currently 31 recognized species in this genus: * ''Barilius ardens'' Knight, A. Rai, D� ...

'', ''

Chela Chela may refer to: * ''Chela'' (fish), a genus of small minnow-type fish in the Cyprinid family * Chela (organ), a pincer-like organ terminating certain limbs of some arthropods such as crabs * Chela (meteorite), a meteorite fall of 1988 in Tanz ...

'', ''

Cirrhinus ''Cirrhinus'' is a genus of fish in the family Cyprinidae, the carps and minnows. Members of this genus are native to freshwater in South Asia, Indochina and southern China.Froese, R. and D. Pauly. (Eds.''Cirrhinus'' species list. FishBase. 2011. ...

'', ''

Crossocheilus ''Crossocheilus'', also known as the fringe barbs, flying foxes, or "algae eaters", is a genus of fish in the family Cyprinidae. It is distributed in China, India, Indonesia, Malaysia and Thailand in Asia. These fish occur in several types of hab ...

'', ''

Cyprinion ''Cyprinion'' is a genus of ray-finned fish in the family Cyprinidae. Species * '' Cyprinion acinaces'' Banister & M. A. Clarke, 1977 ** '' Cyprinion acinaces acinaces'' Banister & M. A. Clarke, 1977 ** '' Cyprinion acinaces hijazi'' Krupp, ...

'', ''

Danio ''Danio'' is a genus of small freshwater fish in the family Cyprinidae found in South and Southeast Asia, commonly kept in aquaria. They are generally characterised by a pattern of horizontal stripes, rows of spots or vertical bars. Some species ...

'', ''

Devario ''Devario'' is a genus of fish in the family Cyprinidae native to the rivers and streams of South and Southeast Asia. These fishes have short barbels and many species having vertical or horizontal stripes. These species consume various small, aqu ...

'', ''

Esomus ''Esomus'', or flying barbs, are freshwater fish native to South Asia, South and Mainland Southeast Asia. They are closely related to the genus ''Danio'' and are distinctive for their extremely long barbels. Species * ''Esomus ahli'' Sunder La ...

'', ''

Garra ''Garra'' is a genus of fish in the family Cyprinidae. These fish are one example of the "log suckers", sucker-mouthed barbs and other cyprinids commonly kept in aquaria to keep down algae. The doctor fish of Anatolia and the Middle East belo ...

'', ''

Labeo ''Labeo'' is a genus of carps in the family Cyprinidae. They are found in freshwater habitats in the tropics and subtropics of Africa and Asia. It contains the typical labeos in the subfamily Labeoninae, which may not be a valid group, however, ...

'', '' Naziritor'', ''

Osteobrama ''Osteobrama'' is a genus of cyprinid fish found in southern Asia consisting of eight species. The name is derived from the Greek word ''osteon'', meaning "bone", and the Old French word ''breme'', a type of freshwater fish. Species *''Osteobra ...

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Pethia ''Pethia'' is a genus of small freshwater fish in the family Cyprinidae native to South Asia, East Asia (only Pethia stoliczkana recorded) and Mainland Southeast Asia. Some species are commonly seen in the aquarium trade. The name ''Pethia'' is d ...

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Puntius ''Puntius'' is a genus of small freshwater fish in the family Cyprinidae native to South Asia and Mainland Southeast Asia, as well as Taiwan. Many species formerly placed in ''Puntius'' have been moved to other genera such as ''Barbodes'', ''Daw ...

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Rasbora ''Rasbora'' is a genus of fish in the family Cyprinidae. They are native to freshwater habitats in South and akistan s_...

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