What is the Indus River?

The Indus River is a major trans-Himalayan river in South Asia and one of the longest rivers in the world, extending approximately 2,000 miles (3,200 km). Its source is in southwestern Tibet, China, near Lake Mapam. The river has a drainage area of roughly 450,000 square miles (1,165,000 square km). The river flows through the Kashmir region and the semiarid plains of Pakistan. The Indus is fed by the Jhelum, Chenab, Ravi, Beas, and Sutlej rivers in the Punjab Plain. The river's flow varies throughout the year, with minimal discharge during winter, rising waters in spring and early summer, and floods during the rainy season. The Indus River system has been used for irrigation for a long time. The Indus Waters Treaty between India and Pakistan, signed in 1960, regulates the use of the river's water.

Where is the Indus River located?

The Indus River rises in southwestern Tibet, China, near Lake Mapam at about 18,000 feet (5,500 meters). It flows northwest for approximately 200 miles (320 km), traversing the southeastern boundary of the disputed Kashmir region. The river passes through the Indian-administered union territory of Ladakh, where the Zanskar River, its first major tributary, joins it. Continuing in the same direction for 150 miles (240 km) into Pakistani-administered Kashmir, the Indus meets the Shyok River. Fed by glaciers from the Karakoram Range and other highlands, it flows as a rapid mountain stream through Pakistan's Khyber Pakhtunkhwa province until reaching the Tarbela Dam reservoir. The Kabul River merges with the Indus above Attock before it cuts across the Salt Range near Kalabagh to enter the Punjab Plain.

Which countries does the Indus River flow through?

The Indus River flows through China, India, and Pakistan. Rising in southwestern Tibet, China, the river travels northwest, crossing the southeastern boundary of the disputed Kashmir region. It then flows through Pakistan's Khyber Pakhtunkhwa province and the plains of western and southern Punjab. Finally, the Indus River reaches the Arabian Sea via Sindh province.

Why is the Indus River important for the people living near it?

The Indus River is very important for the people living near it because it supports agriculture by providing fertile land in the Indus River plain and serves as a crucial water source for irrigation . Since ancient times, successful agriculture has relied on irrigation from the river's waters. The Indus valley is divided into three parts: the Punjab plains, the alluvial plains of Sind, and the Indus delta. Modern irrigation engineering began around 1850, leading to the construction of large canal systems. By 1947, this became the world's greatest canal irrigation system. The Indus Waters Treaty between Pakistan and India in 1960 resolved water supply disruptions by allocating the three western rivers of the Indus basin to Pakistan and the three eastern rivers exclusively to India. Additionally, the Tarbela and Mangla Dams generate hydroelectricity, and the reservoirs have been developed as centers for fishing, tourism, and health resorts.

What ancient civilization developed along the Indus River?

The Indus civilization , one of the world's oldest, developed in the Indus River valley during the 3rd millennium BCE. This civilization, also known as the Harappan civilization, thrived in the expansive and fertile Indus River valley by implementing irrigated agriculture to manage the river's annual floods. The Indus civilization consisted of large cities like Harappa and Mohenjo-daro , along with more than 100 towns and villages. Archaeological discoveries indicate the civilization extended as far as Sutkagen Dor in Balochistan, Pakistan, and Ropar in Punjab, India.

How does the Indus River support agriculture and daily life today?

The Indus River is crucial for Pakistan's agriculture because it irrigates fertile land in the Indus River plain. Since time immemorial, successful agriculture has been based on irrigation from the Indus River waters. Modern irrigation engineering commenced around 1850, and large canal systems were built during British administration. Old canals and inundation channels in the Sindh and Punjab regions were revived and modernized, which created the world's greatest canal irrigation system. The Indus Waters Treaty between Pakistan and India in 1960, brokered by the World Bank, fixed the rights and obligations of both countries concerning the use of the Indus River system.

Indus River

References & Edit History Related Topics

Images

Physical map showing the Indus River basin and its drainage network across parts of Pakistan, India, China, and Afghanistan. The map details river courses, tributaries, canals, dams, irrigated and marsh areas, sand regions, and elevation changes with shaded relief. International, disputed, and control boundaries are marked, and a small locator map in the corner shows the basin's position within South Asia.

The Indus River flows in the foreground with snow-capped Himalayan mountains rising in the background in Ladakh, India.

Long concrete Sukkur Barrage stretches across the Indus River in Pakistan, with multiple arches and water flowing beneath, and grassy banks in the foreground.

View of the confluence of the muddy Zanskar River and the green Indus River, surrounded by barren mountains in Ladakh, India, with a small building near the riverbank.

Map of Pakistan showing areas affected by the 2010 flooding, with regions along the Indus River marked in red for severely affected areas and orange for moderately affected areas. Major cities such as Karachi, Sukkur, Hyderabad, Multan, Lahore, Peshawar, and Islamabad are labeled, along with provincial and international boundaries. Neighboring countries including Afghanistan, India, and China are also indicated.

At a Glance

Indus River summary

Indus River

river, Asia

Also known as: Mehran, Sênggê Zangbo, Shiquan He, Sindhu

Written by

Nafis AhmadAll

Fact-checked by

Britannica Editors

Last updated

Oct. 25, 2026 •History

Top Questions

What is the Indus River?
The Indus River is a major trans-Himalayan river in South Asia and one of the longest rivers in the world, extending approximately 2,000 miles (3,200 km). Its source is in southwestern Tibet, China, near Lake Mapam. The river has a drainage area of roughly 450,000 square miles (1,165,000 square km). The river flows through the Kashmir region and the semiarid plains of Pakistan. The Indus is fed by the Jhelum, Chenab, Ravi, Beas, and Sutlej rivers in the Punjab Plain. The river's flow varies throughout the year, with minimal discharge during winter, rising waters in spring and early summer, and floods during the rainy season. The Indus River system has been used for irrigation for a long time. The Indus Waters Treaty between India and Pakistan, signed in 1960, regulates the use of the river's water.
4 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Where is the Indus River located?
The Indus River rises in southwestern Tibet, China, near Lake Mapam at about 18,000 feet (5,500 meters). It flows northwest for approximately 200 miles (320 km), traversing the southeastern boundary of the disputed Kashmir region. The river passes through the Indian-administered union territory of Ladakh, where the Zanskar River, its first major tributary, joins it.

Continuing in the same direction for 150 miles (240 km) into Pakistani-administered Kashmir, the Indus meets the Shyok River. Fed by glaciers from the Karakoram Range and other highlands, it flows as a rapid mountain stream through Pakistan's Khyber Pakhtunkhwa province until reaching the Tarbela Dam reservoir. The Kabul River merges with the Indus above Attock before it cuts across the Salt Range near Kalabagh to enter the Punjab Plain.
3 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Which countries does the Indus River flow through?
The Indus River flows through China, India, and Pakistan. Rising in southwestern Tibet, China, the river travels northwest, crossing the southeastern boundary of the disputed Kashmir region. It then flows through Pakistan's Khyber Pakhtunkhwa province and the plains of western and southern Punjab. Finally, the Indus River reaches the Arabian Sea via Sindh province.
3 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Why is the Indus River important for the people living near it?
The Indus River is very important for the people living near it because it supports agriculture by providing fertile land in the Indus River plain and serves as a crucial water source for irrigation. Since ancient times, successful agriculture has relied on irrigation from the river's waters. The Indus valley is divided into three parts: the Punjab plains, the alluvial plains of Sind, and the Indus delta.

Modern irrigation engineering began around 1850, leading to the construction of large canal systems. By 1947, this became the world's greatest canal irrigation system. The Indus Waters Treaty between Pakistan and India in 1960 resolved water supply disruptions by allocating the three western rivers of the Indus basin to Pakistan and the three eastern rivers exclusively to India.

Additionally, the Tarbela and Mangla Dams generate hydroelectricity, and the reservoirs have been developed as centers for fishing, tourism, and health resorts.
4 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
What ancient civilization developed along the Indus River?
The Indus civilization, one of the world's oldest, developed in the Indus River valley during the 3rd millennium BCE. This civilization, also known as the Harappan civilization, thrived in the expansive and fertile Indus River valley by implementing irrigated agriculture to manage the river's annual floods.

The Indus civilization consisted of large cities like Harappa and Mohenjo-daro, along with more than 100 towns and villages. Archaeological discoveries indicate the civilization extended as far as Sutkagen Dor in Balochistan, Pakistan, and Ropar in Punjab, India.
4 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
How does the Indus River support agriculture and daily life today?
The Indus River is crucial for Pakistan's agriculture because it irrigates fertile land in the Indus River plain. Since time immemorial, successful agriculture has been based on irrigation from the Indus River waters. Modern irrigation engineering commenced around 1850, and large canal systems were built during British administration. Old canals and inundation channels in the Sindh and Punjab regions were revived and modernized, which created the world's greatest canal irrigation system.

The Indus Waters Treaty between Pakistan and India in 1960, brokered by the World Bank, fixed the rights and obligations of both countries concerning the use of the Indus River system.
5 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Indus River, great trans-Himalayan river of South Asia. It is one of the longest rivers in the world, with a length of some 2,000 miles (3,200 km). Its total drainage area is about 450,000 square miles (1,165,000 square km), of which 175,000 square miles (453,000 square km) lie in the ranges and foothills of the Himalayas, the Hindu Kush, and the Karakoram Range; the rest is in the semiarid plains of Pakistan. The river’s annual flow is about 58 cubic miles (243 cubic km)—twice that of the Nile River and three times that of the Tigris and Euphrates rivers combined. The river’s conventional name derives from the Tibetan and Sanskrit name Sindhu. The earliest chronicles and hymns of the Indo-European-speaking peoples of ancient India, the Rigveda, composed about 1500 bce, mention the river, which is the source of the country’s name.

Physical features

The river rises in the southwestern Tibet Autonomous Region of China near Lake Mapam at an elevation of about 18,000 feet (5,500 meters). For about 200 miles (320 km) it flows northwest, crossing the southeastern boundary of the disputed Kashmir region at about 15,000 feet (4,600 meters). A short way beyond Leh, in the Indian-administered union territory of Ladakh, it is joined on its left by its first major tributary, the Zanskar River. Continuing for 150 miles (240 km) in the same direction into the Pakistani-administered areas of the Kashmir region, the Indus is joined by its notable tributary the Shyok River on the right bank. Below its confluence with the Shyok, as far as the Kohistan region of Pakistan’s Khyber Pakhtunkhwa province, it is fed by mighty glaciers on the slopes of the Karakoram Range, the Nanga Parbat massif, and the Kohistan highlands. The Shyok, Shigar, Gilgit, and other streams carry glacial meltwater into the Indus.

The Shigar River joins the Indus on the right bank near Skardu in Baltistan. Farther downstream the Gilgit River is another right-bank tributary, joining it at Bunji. A short distance downstream the Astor River, running off the eastern slope of Nanga Parbat, joins as a left-bank tributary. The Indus then flows west and turns south and southwest to enter Khyber Pakhtunkhwa province, in the process skirting around the northern and western sides of the Nanga Parbat massif (26,660 feet [8,126 meters]) in gorges that reach depths of 15,000 to 17,000 feet (4,600 to 5,200 meters) and widths of 12 to 16 miles (19 to 26 km). Trails cling grimly to precipitous slopes overlooking the river from elevations of 4,000 to 5,000 feet (1,200 to 1,500 meters).

By clicking “Sign Up”, you consent to the Britannica Privacy Policy and Terms of Use.

After emerging from this highland region, the Indus flows as a rapid mountain stream between the Swat River and Hazara areas in Khyber Pakhtunkhwa province until it reaches the reservoir of Tarbela Dam. The Kabul River joins the Indus just above Attock, where the Indus flows at an elevation of 2,000 feet (600 meters) and is crossed by the first bridge carrying rail and road. Finally, it cuts across the Salt Range near Kalabagh to enter the Punjab Plain.

The Indus receives its most-notable tributaries from the eastern Punjab Plain. These five rivers—the Jhelum, Chenab, Ravi, Beas, and Sutlej—give the name Punjab (“Five Rivers”) to the region divided between Pakistan and India.

Tower Bridge over the Thames River in London, England. Opened in 1894. Remains an Important Traffic Route with 40,000 Crossings Every Day.

Britannica Quiz

Guess the City by Its River Quiz

After receiving the waters of the Punjab rivers, the Indus becomes much larger, and during the flood season (July to September) it is several miles wide. It flows through the plain in western and southern Punjab province in Pakistan at an elevation of about 260 feet (80 meters). Because it moves so slowly across the plain, it deposits accumulated silt on its bed, which is thus raised above the level of the sandy plain; indeed, most of the plain in Sindh (Sind) province in Pakistan has been built up by alluvium laid down by the Indus. Embankments have been constructed to prevent flooding, but occasionally these give way, and floods destroy large areas. Such floods occurred in 1947, 1958, and 2010. During heavy flooding the river sometimes changes its course.

Near Tatta the Indus branches into distributaries that form a delta and join the sea at various points south-southeast of Karachi. The delta covers an area of 3,000 square miles (7,800 square km) or more (and extends along the coast for about 130 miles (210 km). The uneven surface of the delta contains a network of existing and abandoned channels. The coastal strip, from about 5 to 20 miles (8 to 32 km) inland, is flooded by high tides. The Indus delta has elongated protruding distributaries and low sandy beaches.

Explore Britannica Premium!

The trusted destination for professionals, college students, and lifelong learners.

Indus River

Physical features

Thank you for signing up!