Indian Geography
🔒 Log in to trackRivers, dams and waterfalls
🔒 Log in to trackHimalayan rivers (perennial — fed by snow and rain)
| River | Source | Key facts |
|---|---|---|
| Indus | Near Mansarovar, Tibet | Enters India in Ladakh; tributaries Jhelum, Chenab, Ravi, Beas, Sutlej; Indus Waters Treaty 1960 |
| Jhelum | Verinag spring (Kashmir) | Flows through Wular lake and Srinagar |
| Chenab | Chandra + Bhaga meet at Tandi (HP) | Largest Indus tributary in volume |
| Sutlej | Rakas Tal (Tibet) | Enters India at Shipki La; Bhakra Nangal dam (Gobind Sagar) |
| Beas | Beas Kund near Rohtang | Joins Sutlej at Harike (Punjab) |
| Ganga | Bhagirathi from Gangotri glacier (Gaumukh) | Bhagirathi + Alaknanda meet at Devprayag; longest river of India (about 2,525 km) |
| Yamuna | Yamunotri glacier | Longest tributary of Ganga; joins at Prayagraj |
| Brahmaputra | Near Mansarovar (Chemayungdung glacier) | Tsangpo in Tibet, Siang/Dihang in Arunachal; Majuli (Assam) is the largest river island |
Panch Prayag (Alaknanda's confluences, upstream to downstream): Vishnuprayag (Dhauliganga) → Nandprayag (Nandakini) → Karnaprayag (Pindar) → Rudraprayag (Mandakini) → Devprayag (Bhagirathi).
Peninsular rivers (mostly rain-fed)
| River | Source | Flows into | Key facts |
|---|---|---|---|
| Godavari | Trimbakeshwar, Nashik | Bay of Bengal | Longest peninsular river, 'Dakshin Ganga' |
| Krishna | Near Mahabaleshwar | Bay of Bengal | Nagarjuna Sagar, Srisailam, Almatti dams |
| Kaveri | Talakaveri, Brahmagiri hills (Kodagu) | Bay of Bengal | Shivanasamudra and Hogenakkal falls; Mettur dam; KRS dam |
| Mahanadi | Sihawa, Chhattisgarh | Bay of Bengal | Hirakud dam — longest earthen dam |
| Narmada | Amarkantak (MP) | Arabian Sea | Flows west in a rift valley; Dhuandhar falls at Bhedaghat (Jabalpur); Sardar Sarovar dam; forms an estuary |
| Tapi | Multai, Betul (MP) | Arabian Sea | West-flowing, rift valley; Surat on its bank |
| Mahi | Vindhyas (MP) | Gulf of Khambhat | Crosses the Tropic of Cancer twice |
| Luni | Aravallis near Ajmer | Rann of Kutch | Does not reach the sea as a regular river; saline lower course |
West-flowing rivers (Narmada, Tapi) form estuaries; east-flowing ones form deltas.
Dams and waterfalls
| Dam | River | Waterfall | River | |
|---|---|---|---|---|
| Tehri (highest dam of India) | Bhagirathi | Jog / Gersoppa | Sharavati (Karnataka) | |
| Bhakra Nangal | Sutlej | Chitrakote ('Niagara of India') | Indravati (Chhattisgarh) | |
| Hirakud | Mahanadi | Dudhsagar | Mandovi (Goa) | |
| Sardar Sarovar | Narmada | Athirappilly | Chalakudy (Kerala) | |
| Nagarjuna Sagar | Krishna | Shivanasamudra, Hogenakkal | Kaveri | |
| Mettur | Kaveri | Dhuandhar | Narmada | |
| Idukki | Periyar | |||
| Koyna | Koyna (Maharashtra) | |||
| Farakka Barrage | Ganga (West Bengal) |
Detailed notes
Two drainage systems
Himalayan rivers are perennial (snow-fed), long, and cut deep gorges; peninsular rivers are mostly rain-fed and seasonal. East-flowing peninsular rivers build deltas; west-flowing ones (Narmada, Tapi) enter the sea through estuaries.
The Indus system (rivers of Punjab)
The Indus rises near Lake Mansarovar (Tibet) and flows through Ladakh into Pakistan. Its five tributaries: Jhelum (rises at Verinag spring, flows through Srinagar and Wular lake), Chenab (formed where the Chandra and Bhaga meet at Tandi in Himachal Pradesh), Ravi, Beas (rises at Beas Kund near Rohtang; joins the Sutlej at Harike), and Sutlej (rises at Rakas Tal; enters India at Shipki La; the Bhakra Nangal dam stands on it). The Indus Waters Treaty (1960) gave India the three eastern rivers (Ravi, Beas, Sutlej) and Pakistan the three western ones.
The Ganga system
The Ganga is formed when the Bhagirathi (from the Gangotri glacier, emerging at Gaumukh) meets the Alaknanda at Devprayag. It is the longest river of India (about 2,525 km) and leaves the Himalayas at Haridwar. The Panch Prayag (confluences on the Alaknanda, upstream to downstream): Vishnuprayag (Dhauliganga), Nandprayag (Nandakini), Karnaprayag (Pindar), Rudraprayag (Mandakini), Devprayag (Bhagirathi). Main tributaries: Yamuna (from Yamunotri; the longest tributary; joins at Prayagraj) with the Chambal, Sind, Betwa and Ken; left-bank Ganga tributaries Ramganga, Gomti (Lucknow stands on it), Ghaghara, Gandak, Kosi ("Sorrow of Bihar") and Mahananda; the Son (rises at Amarkantak) joins on the right. The Damodar ("Sorrow of Bengal") feeds the Hugli. The Ganga-Brahmaputra Sundarbans delta is the world's largest delta.
The Brahmaputra
Rises near Mansarovar (Chemayungdung glacier) as the Tsangpo in Tibet, enters Arunachal Pradesh as the Siang/Dihang, and in Assam carries the hugest volume of any Indian river. Majuli (Assam) on it is the largest river island in the world.
Peninsular rivers
| River | Source | Endpoint / note |
|---|---|---|
| Godavari | Trimbakeshwar, Nashik | Longest peninsular river; "Dakshin Ganga"; tributaries Manjra, Indravati, Pranhita |
| Krishna | Near Mahabaleshwar | Tributaries Tungabhadra, Bhima, Koyna, Ghataprabha, Malaprabha |
| Kaveri | Talakaveri, Brahmagiri hills (Kodagu) | Tributaries Hemavati, Kabini, Bhavani, Amaravati; Shivanasamudra and Hogenakkal falls |
| Mahanadi | Sihawa, Chhattisgarh | Hirakud dam; tributaries Seonath, Hasdeo |
| Narmada | Amarkantak | Flows west in a rift valley to the Gulf of Khambhat; Dhuandhar falls at Bhedaghat; tributary Tawa |
| Tapi | Multai (Betul) | West-flowing rift-valley river; Surat on its bank |
| Mahi | Vindhyas | Crosses the Tropic of Cancer twice |
| Luni | Aravallis near Ajmer | Ends in the Rann of Kutch (saline) |
Dams and waterfalls
| Dam | River | Waterfall | River |
|---|---|---|---|
| Tehri (tallest in India) | Bhagirathi | Jog / Gersoppa | Sharavati (Karnataka) |
| Bhakra Nangal (Gobind Sagar) | Sutlej | Chitrakote ("Niagara of India") | Indravati (Chhattisgarh) |
| Hirakud (longest earthen dam) | Mahanadi | Dudhsagar | Mandovi (Goa) |
| Sardar Sarovar | Narmada | Athirappilly | Chalakudy (Kerala) |
| Nagarjuna Sagar / Srisailam | Krishna | Shivanasamudra, Hogenakkal | Kaveri |
| Mettur, KRS | Kaveri | Dhuandhar | Narmada |
| Idukki (arch dam) | Periyar | ||
| Farakka Barrage | Ganga |
Shivanasamudra (Kaveri) hosted one of Asia's earliest hydro-electric stations (1902). The Indira Gandhi Canal carries Sutlej-Beas water deep into Rajasthan.
Quick revision
- Indus tributaries J-C-R-B-S; Sutlej enters at Shipki La; Beas meets Sutlej at Harike.
- Panch Prayag: "Very Nice Kids Read Daily"; Ganga formed at Devprayag; longest river of India.
- Kosi = Sorrow of Bihar, Damodar = Sorrow of Bengal; Sundarbans = largest delta; Majuli = largest river island.
- West-flowing rift-valley rivers Narmada-Tapi form estuaries; Godavari = Dakshin Ganga; Mahi crosses the Tropic twice.
- Tehri = tallest, Hirakud = longest earthen dam; Jog-Sharavati, Chitrakote-Indravati, Dhuandhar-Narmada.
Types of questions asked
Every way this subtopic shows up in exams — how to recognise it, the formula or logic to use, and a solved example.
Type 1: River ↔ source (origin point)very common3 practice Q
'Which river rises at Amarkantak / Trimbakeshwar / Talakaveri?', or a river with places as options.
- Peninsular sources: Godavari - Trimbakeshwar; Krishna - near Mahabaleshwar; Kaveri - Talakaveri; Mahanadi - Sihawa; Narmada and Son - Amarkantak; Tapi - Multai.
- Himalayan: Ganga (Bhagirathi) - Gangotri/Gaumukh; Yamuna - Yamunotri; Indus and Brahmaputra - near Mansarovar; Sutlej - Rakas Tal; Beas - Beas Kund.
- Amarkantak is the favourite: it feeds both a west-flowing (Narmada) and a north-flowing (Son) river.
Example: The Mahanadi rises in which state?
Chhattisgarh - near Sihawa (Dhamtari district). It flows east through Odisha into the Bay of Bengal.
Type 2: Confluences and tributariesvery common3 practice Q
'X and Y meet at…', 'Which is a tributary of…', 'Which is a right-bank tributary', Panch Prayag questions.
- Panch Prayag on the Alaknanda (upstream to downstream): Vishnu (Dhauliganga), Nand (Nandakini), Karna (Pindar), Rudra (Mandakini), Dev (Bhagirathi) - 'Very Nice Kids Read Daily'.
- Other meeting points: Beas-Sutlej at Harike; Ganga-Yamuna at Prayagraj; Chandra-Bhaga at Tandi.
- Ganga right-bank: Yamuna, Son; left-bank: Ramganga, Gomti, Ghaghara, Gandak, Kosi, Mahananda.
Example: Karnaprayag is the confluence of the Alaknanda with which river?
The Pindar. (Vishnuprayag - Dhauliganga, Nandprayag - Nandakini, Rudraprayag - Mandakini, Devprayag - Bhagirathi.)
Type 3: Dam / project ↔ riververy common3 practice Q
'Hirakud / Tehri / Sardar Sarovar is built on…', or a match-the-column of dams and rivers.
- North: Tehri - Bhagirathi; Bhakra Nangal - Sutlej; Farakka barrage - Ganga.
- Peninsula: Hirakud - Mahanadi; Sardar Sarovar - Narmada; Nagarjuna Sagar and Srisailam - Krishna; Mettur and KRS - Kaveri; Idukki - Periyar.
- Superlatives: Tehri tallest; Hirakud longest earthen dam.
Example: The Krishnarajasagar (KRS) dam near Mysuru is on which river?
The Kaveri. Mettur dam in Tamil Nadu is on the same river.
Type 4: Waterfall ↔ rivercommon3 practice Q
A named waterfall (Jog, Chitrakote, Dhuandhar, Dudhsagar, Athirappilly, Shivanasamudra) with rivers as options.
- Karnataka: Jog - Sharavati; Shivanasamudra - Kaveri.
- Central India: Chitrakote - Indravati (Chhattisgarh); Dhuandhar - Narmada (Bhedaghat, Jabalpur).
- Coast: Dudhsagar - Mandovi (Goa); Athirappilly - Chalakudy (Kerala); Hogenakkal - Kaveri (TN).
Example: Hogenakkal Falls in Tamil Nadu are on which river?
The Kaveri - near the Karnataka-Tamil Nadu border.
Type 5: River nicknames and unique factscommon3 practice Q
'Sorrow of Bihar/Bengal', 'Dakshin Ganga', 'largest river island', 'forms an estuary', 'crosses the Tropic twice'.
- Nicknames: Kosi - Sorrow of Bihar; Damodar - Sorrow of Bengal; Godavari - Dakshin Ganga.
- Firsts: Ganga longest river of India; Yamuna longest tributary; Majuli (Brahmaputra) largest river island; Sundarbans largest delta.
- Narmada and Tapi flow west in rift valleys and form estuaries, not deltas; the Mahi crosses the Tropic of Cancer twice.
Example: Which river is called the 'Sorrow of Bengal'?
The Damodar - it used to flood the plains of West Bengal; the Damodar Valley Corporation (1948) was set up to control it.
Shortcut tricks
⚡ Panch Prayag order — 'Very Nice Kids Read Daily'
Vishnuprayag → Nandprayag → Karnaprayag → Rudraprayag → Devprayag (upstream to downstream). At Devprayag the river becomes the Ganga.
Example: At which confluence does the Mandakini meet the Alaknanda?
Rudraprayag.
⚡ West-flowers: 'Nobody Takes Mahi Seriously'
Narmada, Tapi, Mahi, Sabarmati flow into the Arabian Sea and form estuaries. Narmada and Tapi flow through rift valleys.
⚡ Waterfall ↔ river pairs
Jog–Sharavati, Chitrakote–Indravati, Dudhsagar–Mandovi, Athirappilly–Chalakudy, Shivanasamudra/Hogenakkal–Kaveri, Dhuandhar–Narmada.
Where students lose marks
Calling the Godavari India's longest river — it is the longest peninsular river; the Ganga is the longest overall.
Saying the Narmada rises in the Western Ghats — it rises at Amarkantak (MP) and flows west.
Putting Tehri on the Alaknanda — it is on the Bhagirathi.
Practice sets — 19 questions
Sets of 10, mixed across the question types above. Each answer comes with a step-by-step explanation.
Topic test · 10 questions
Suggested time 4 min · wrong answers go to your mistake notebook automatically.