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Chapter 9: India and the world on a map

Rivers of India

The Himalayan and peninsular rivers, where each one rises and ends, which cities stand on them, and the big dams and waterfalls exams ask about.

In one minute

6 facts to know

  1. The Bhagirathi (from Gaumukh) and the Alaknanda meet at Devprayag; from there the river is called the Ganga.
  2. The Yamuna joins the Ganga at the Triveni Sangam in Prayagraj, where the hidden Saraswati is believed to join them.
  3. The Brahmaputra is the Tsangpo in Tibet and the Siang in Arunachal Pradesh; Majuli in Assam is its great river island.
  4. The Godavari is the longest river of the peninsula and is called the Dakshin Ganga.
  5. Most peninsular rivers flow east to the Bay of Bengal; the Narmada and Tapi flow west, through rift valleys, to the Arabian Sea.
  6. The Luni of Rajasthan never reaches the sea: it ends in the Rann of Kutch.

Two kinds of river

India's rivers come in two families.

  • Himalayan rivers (the Indus, Ganga and Brahmaputra and their tributaries) are fed by both rain and melting snow and glaciers, so they flow all year. They carry a lot of silt and wind across the northern plains.
  • Peninsular rivers (the Godavari, Krishna, Kaveri, Narmada and others) rise in the hills of the peninsula and are fed mainly by the monsoon rain, so many shrink a lot in the dry season. Their valleys are older and their courses more fixed.

A tributary is a river that flows into a bigger one. A confluence, or prayag or sangam, is the place where two rivers meet.

The Indus and its five rivers

Two rivers of different colours, one green and one muddy brown, meeting in a valley between bare brown mountains.
Picture: Didini Tochhawng. CC BY-SA 4.0.

Indus

Also called Sindhu

Where
Rises in Tibet near Lake Mansarovar; flows through Ladakh, then Pakistan, to the Arabian Sea

The westernmost of the big Himalayan rivers, about 2,880 km long. In India it flows through Ladakh, where the Zanskar joins it near Nimmu (pictured). It gave India its name: the Greeks heard Sindhu as "Indos". Its five big eastern tributaries are the Jhelum, Chenab, Ravi, Beas and Sutlej, the rivers that give Punjab, "the land of five waters", its name.

Remember

Indus, Sindhu, India: one river, three names.
River Where it rises Remember
Jhelum Verinag spring, Kashmir valley Flows through Srinagar and Wular Lake
Chenab Where the Chandra and Bhaga meet at Tandi, Himachal Pradesh The largest tributary of the Indus
Ravi Kullu hills near Rohtang Pass, Himachal Pradesh Flows through the Chamba valley
Beas Beas Kund near Rohtang Pass Joins the Sutlej at Harike in Punjab
Sutlej Rakas Tal near Mansarovar, Tibet Enters India at Shipki La; feeds the Bhakra Dam

From west to east the five are Jhelum, Chenab, Ravi, Beas, Sutlej. Wular Lake on the Jhelum is usually called India's largest freshwater lake.

Under the Indus Waters Treaty of 1960, India got the use of the three eastern rivers (Ravi, Beas, Sutlej) and Pakistan most of the water of the three western ones (Indus, Jhelum, Chenab). In April 2025 India put the treaty "in abeyance", meaning on hold, and as of October 2026 it remains on hold.

The Ganga and the Yamuna

Two rivers meeting in a steep green gorge below a hillside town, one rushing and clear green, the other calmer.
Picture: Vvnataraj. CC BY-SA 3.0.

Ganga at Devprayag

Where
Devprayag, Uttarakhand

The Ganga is born here, where the Bhagirathi meets the Alaknanda (pictured). It enters the plains at Haridwar and flows across Uttar Pradesh, Bihar and West Bengal to the Bay of Bengal, about 2,525 km in all, the longest river in India. Near the sea it splits: the Hooghly flows past Kolkata, and the Padma flows into Bangladesh, where it joins the Brahmaputra to form the Sundarbans delta. It was declared India's National River in 2008.

Spot it by

Two streams of different colours joining below the town's temple and ghats.

Remember

Dev-prayag, the gods' confluence: the place the Ganga gets its name.

The Alaknanda meets four other rivers on its way to Devprayag. These five meeting points are the Panch Prayag: Vishnuprayag (Dhauliganga), Nandprayag (Nandakini), Karnaprayag (Pindar), Rudraprayag (Mandakini) and Devprayag (Bhagirathi).

A wide, slow river with sandbanks, seen from a high stone terrace with a lawn and railing.
Picture: Pinakpani. CC BY 4.0.

Yamuna

Where
Rises at the Yamunotri Glacier, Uttarakhand; joins the Ganga at Prayagraj

The longest tributary of the Ganga and the one farthest west. It flows past Delhi, Mathura and Agra, where it runs beside the Taj Mahal (pictured, from the Taj). The Chambal, Betwa and Ken flow into it from the south, from the plateau of central India.

Remember

Delhi, Mathura and Agra are all on the Yamuna, not the Ganga.

Don't confuse

Yamunotri is the source of the Yamuna; Gangotri is the source of the Bhagirathi. Both are in Uttarakhand.
A blue wooden rowing boat with pilgrims in orange robes on hazy water, with gulls flying behind.
Picture: Timothy A. Gonsalves. CC BY-SA 4.0.

Triveni Sangam

Where
Prayagraj (formerly Allahabad), Uttar Pradesh

The meeting point of the Ganga and the Yamuna. Hindu tradition holds that a third river, the unseen Saraswati, joins them here, which is why it is called the meeting of three (triveni). It is the site of the Kumbh Mela, the largest gathering of people on Earth; the last Maha Kumbh was held here in 2025.

Spot it by

Pilgrims in boats out on the water where the two rivers mix.

Remember

Tri means three: Ganga, Yamuna and the hidden Saraswati.

The Brahmaputra

Forested hills in the foreground, with a wide river and its sandbanks opening onto a plain beyond.
Picture: Rashid Jorvee. CC BY-SA 4.0.

Brahmaputra

Also called Tsangpo in Tibet, Siang or Dihang in Arunachal Pradesh, Jamuna in Bangladesh

Where
Rises near Mansarovar in Tibet; flows through Arunachal Pradesh and Assam into Bangladesh

One of the largest rivers in the world, and a river of many names. It flows east across Tibet as the Tsangpo, swings round the end of the Himalaya and enters India in Arunachal Pradesh as the Siang (pictured near Pasighat, where it reaches the plains). Joined by the Dibang and Lohit, it becomes the Brahmaputra and flows west through Assam past Guwahati. It is known for its floods and for constantly shifting its channels.

Remember

Tsangpo, Siang, Brahmaputra, Jamuna: Tibet, Arunachal, Assam, Bangladesh.
A still river reflecting a pink and blue dawn sky, with bamboo fishing nets standing in the water.
Picture: Udit Kapoor. CC BY-SA 4.0.

Majuli

Where
In the Brahmaputra, Assam, reached by ferry from Jorhat

A huge island in the Brahmaputra, often called the largest river island in the world. In 2016 it became India's first district that is an island. It is the centre of the Vaishnava monasteries called satras, famous for their masks and dance-dramas. The river is slowly eating away its banks, so the island has shrunk over the years.

Spot it by

Flat land, wide water and bamboo fishing nets (pictured).

Remember

Majuli: India's first island district, in the Brahmaputra.

Peninsular rivers

A very wide river with a small fishing boat, and a long bridge of repeated arches on the horizon.
Picture: Radhika41. CC BY 4.0.

Godavari

Also called Dakshin Ganga, the Ganga of the south

Where
Rises at Trimbakeshwar near Nashik, Maharashtra; flows east to the Bay of Bengal in Andhra Pradesh

The longest river of the peninsula, about 1,465 km, with the largest basin. Its size and holiness earned it the name Dakshin Ganga. It flows across Maharashtra, Telangana and Andhra Pradesh, widening into a great river at Rajahmundry (pictured), before splitting into a delta.

Remember

The biggest river of the south is "the Ganga of the south".
A wide waterfall spilling in many white streams over a rocky, forested ledge, with green hills behind.
Picture: Magentic Manifestations. CC BY-SA 4.0.

Kaveri

Also called Cauvery

Where
Rises at Talakaveri in the Brahmagiri hills, Kodagu, Karnataka; flows east through Tamil Nadu to the Bay of Bengal

About 800 km long. Its upper basin gets the south-west monsoon in summer and its lower basin the north-east monsoon in winter, so it flows more steadily through the year than most peninsular rivers. It tumbles over the Shivanasamudra Falls in Karnataka (pictured) and forms river islands at Srirangapatna and Srirangam.

Remember

The Kaveri gets two monsoons.

Between the Godavari and the Kaveri lies the Krishna, which rises near Mahabaleshwar in Maharashtra and flows east through Karnataka, Telangana and Andhra Pradesh, past Vijayawada. Its main tributaries are the Koyna, Bhima and Tungabhadra. In the east, the Mahanadi rises near Sihawa in Chhattisgarh and flows through Odisha to the Bay of Bengal.

A calm river running between tall white and cream cliffs of marble, with small boats on the water.
Picture: Karan Dhawan India. CC BY-SA 4.0.

Narmada

Also called Rewa

Where
Rises at Amarkantak, Madhya Pradesh; flows west to the Arabian Sea in Gujarat

The largest river that flows west. It runs through a rift valley, a long trough where the land sank between two faults, with the Vindhya to its north and the Satpura to its south. Near Jabalpur it cuts a gorge through the Marble Rocks at Bhedaghat (pictured) and drops over the Dhuandhar Falls. In Gujarat it is held back by the Sardar Sarovar Dam, and the Statue of Unity stands on its bank facing the dam.

Remember

West-flowing rivers are rift-valley rivers: the Narmada, and the shorter Tapi to its south.
River Rises at Flows into
Godavari Trimbakeshwar, Nashik, Maharashtra Bay of Bengal
Krishna Near Mahabaleshwar, Maharashtra Bay of Bengal
Kaveri Talakaveri, Kodagu, Karnataka Bay of Bengal
Mahanadi Near Sihawa, Chhattisgarh Bay of Bengal
Narmada Amarkantak, Madhya Pradesh Arabian Sea, through the Gulf of Khambhat
Tapi Multai, Betul, Madhya Pradesh Arabian Sea, near Surat
Mahi Madhya Pradesh, in the Vindhya Gulf of Khambhat; crosses the Tropic of Cancer twice
Sabarmati Aravalli hills, Udaipur district, Rajasthan Gulf of Khambhat, after flowing past Ahmedabad
Luni Near Pushkar, Ajmer, Rajasthan The Rann of Kutch; it never reaches the sea
Son Amarkantak, Madhya Pradesh The Ganga, near Patna

Where rivers rise

A grey wall of glacier ice at the end of a stony valley, with snowy peaks behind and prayer flags on a cairn of rocks in front.

Gaumukh, "the cow's mouth", the snout of the Gangotri Glacier in Uttarakhand, where the Bhagirathi begins.

Picture: Atarax42. CC BY-SA 3.0.
Source State River
Gaumukh, at the end of the Gangotri Glacier Uttarakhand Bhagirathi, the main stream of the Ganga
Satopanth glacier, above Badrinath Uttarakhand Alaknanda
Yamunotri Glacier Uttarakhand Yamuna
Near Lake Mansarovar Tibet Indus, Sutlej and Brahmaputra
Amarkantak Madhya Pradesh Narmada and Son
Trimbakeshwar Maharashtra Godavari
Mahabaleshwar Maharashtra Krishna
Talakaveri Karnataka Kaveri

Amarkantak is the one to remember: two rivers rise there and go opposite ways. The Narmada flows west to the Arabian Sea, and the Son flows north to the Ganga.

Cities on rivers

City River State
Srinagar Jhelum Jammu and Kashmir
Ludhiana Sutlej Punjab
Delhi, Mathura, Agra Yamuna Delhi, Uttar Pradesh
Haridwar, Kanpur, Varanasi Ganga Uttarakhand, Uttar Pradesh
Patna Ganga Bihar
Kolkata Hooghly West Bengal
Lucknow Gomti Uttar Pradesh
Guwahati Brahmaputra Assam
Kota Chambal Rajasthan
Jabalpur Narmada Madhya Pradesh
Ahmedabad Sabarmati Gujarat
Surat Tapi Gujarat
Nashik Godavari Maharashtra
Rajahmundry Godavari Andhra Pradesh
Vijayawada Krishna Andhra Pradesh
Hyderabad Musi Telangana
Cuttack Mahanadi Odisha
Tiruchirappalli Kaveri Tamil Nadu
Madurai Vaigai Tamil Nadu

Big dams

A huge sloping wall of rock and earth with a road zigzagging down it, holding back a lake among green mountains.
Picture: Dr Vikramjit Kakati. CC BY-SA 4.0.

Tehri Dam

Where
On the Bhagirathi, Tehri Garhwal, Uttarakhand
When
Built 1978 to 2006

At 260.5 m, the tallest dam in India. It is built of rock and earth rather than concrete, and holds a long reservoir that supplies water to Delhi and western Uttar Pradesh and makes hydroelectric power. The old town of Tehri was drowned under its lake, and a new town was built above it.

Remember

Tallest dam, on the Bhagirathi, in the hills.
A tall concrete dam wall filling a narrow gap between rocky hills, with power lines and a river below.
Picture: Apar Singh Bataan. CC BY-SA 3.0.

Bhakra Dam

Where
On the Sutlej, Bilaspur district, Himachal Pradesh
When
Completed 1963

A 226 m concrete dam in a gorge of the Sutlej, one of the first great projects of independent India. Its reservoir is called the Gobind Sagar. With the Nangal Dam downstream in Punjab, it is often called Bhakra-Nangal, and its canals water the farms of Punjab, Haryana and Rajasthan.

Remember

Bhakra on the Sutlej; its lake is the Gobind Sagar.
A long concrete dam with many sluice gates, stretching away into the distance.
Picture: Quarterbacker. CC BY 3.0.

Hirakud Dam

Where
On the Mahanadi, near Sambalpur, Odisha
When
Begun 1946; working from the late 1950s

Usually called the longest earthen dam in the world, counting its long earth walls (dykes) on either side of the concrete section. It was built to stop the floods that used to hit the Mahanadi delta, and to water farms and make electricity. Its reservoir stretches about 55 km.

Remember

Hirakud on the Mahanadi: the long one.
A massive concrete dam with a row of spillway gates, seen through green trees.
Picture: Rupeshsarkar. CC BY-SA 4.0.

Sardar Sarovar Dam

Where
On the Narmada, near Kevadia, Narmada district, Gujarat
When
Foundation stone 1961; finished 2017

The biggest dam on the Narmada, carrying water by canal across Gujarat and into Rajasthan. Its reservoir drowned many villages, and the Narmada Bachao Andolan protested for decades for the people who lost their homes. The 182 m Statue of Unity, of Sardar Vallabhbhai Patel, stands nearby facing the dam.

Remember

Sardar Sarovar and the Statue of Unity are both named after Sardar Patel, and both stand on the Narmada.
Dam River State Remember
Tehri Bhagirathi Uttarakhand Tallest dam in India
Bhakra Sutlej Himachal Pradesh Gobind Sagar reservoir
Hirakud Mahanadi Odisha Longest earthen dam
Sardar Sarovar Narmada Gujarat Statue of Unity nearby

Waterfalls

Thin streams of water falling down a towering grey cliff into a green gorge, with a small rainbow at the bottom.
Picture: Krishnakulkarni36. CC BY-SA 4.0.

Jog Falls

Where
On the Sharavathi river, Shivamogga district, Karnataka

The Sharavathi drops about 253 m in one leap here, splitting into four falls named Raja, Rani, Roarer and Rocket. It is one of the highest plunge waterfalls in India, and at its fullest just after the monsoon.

Remember

Jog on the Sharavathi, with its four named falls.
A broad white waterfall pouring over a rock ledge in the middle of thick green forested hills.
Picture: Pranchiyettan. CC BY-SA 3.0.

Athirappilly Falls

Where
On the Chalakudy river, Thrissur district, Keralam (Kerala until 2026)

Keralam's largest waterfall, about 25 m high but very wide, set in the forests of the Western Ghats. It is nicknamed the Niagara of India for its broad curtain of water.

Remember

Not the tallest, the widest: the Niagara of India.
A white curtain of water falling down an orange rock face into a calm green pool.
Picture: soumyajit pramanick. CC BY-SA 2.0.

Dudhsagar Falls

Where
On the Mandovi (Mahadayi) river, Goa, on the border with Karnataka

A four-tiered fall about 310 m high, among the tallest in India. Its name means "sea of milk", from the white foam of the water. A railway line crosses the face of the falls on a stone bridge, so trains pass right in front of it.

Remember

Dudh means milk: Dudhsagar is the sea of milk, in Goa.
Waterfall River State
Jog Sharavathi Karnataka
Shivanasamudra Kaveri Karnataka
Athirappilly Chalakudy Keralam
Dudhsagar Mandovi (Mahadayi) Goa
Dhuandhar Narmada Madhya Pradesh
Hundru Subarnarekha Jharkhand

Test yourself

Question 1 of 8

Two rivers meet here to become the Ganga. Which two?

Question 2 of 8

Which river is called the Dakshin Ganga?

Question 3 of 8

The Statue of Unity stands on the bank of which river?

Question 4 of 8

Which of these shows the Narmada cutting through a rift valley gorge near Jabalpur?

Question 5 of 8

This island in the Brahmaputra became India's first island district. What is it called?

Question 6 of 8

Which river ends in the Rann of Kutch instead of the sea?

Question 7 of 8

India's tallest dam is built on which river?

Question 8 of 8

Which of these is the Jog Falls?

From past papers

Real exam questions on this topic, each with a full solution.

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