Himalayan Rivers and Peninsular Rivers. Each type has unique features that examiners love to test. --- KEY RULES / PROPERTIES --- HIMALAYAN RIVERS: • Origin: Glaciers in the Himalayas • Nature: Perennial (flow throughout the year) • Action: Both erosional and depositional • Examples: Ganga, Yamuna, Brahmaputra, Indus, Satluj, Ravi, Beas, Chenab, Jhelum • These rivers are older than the Himalayas — they are called 'Antecedent Rivers' PENINSULAR RIVERS: • Origin: Plateau regions (Deccan Plateau, Western Ghats) • Nature: Seasonal (depend on rainfall, dry in summer) • Action: Mostly depositional • Most flow EAST into Bay of Bengal (except Narmada and Tapi — they flow WEST) • Examples: Godavari, Krishna, Kaveri, Mahanadi, Narmada, Tapi KEY RIVER FACTS TO MEMORISE: • Longest River in India: Ganga (2525 km) • Largest River by volume: Brahmaputra (also called Tsangpo in Tibet, Jamuna in Bangladesh) • Brahmaputra flows EAST in Tibet, then turns WEST after Namcha Barwa — forms a gorge (deepest gorge in world) • Indus originates from Mansarovar Lake (Tibet) near Bokhar Chu glacier • Ganga originates from Gangotri Glacier (Bhagirathi + Alaknanda meet at Devprayag = Ganga) • The five prayags (confluences): Vishnu Prayag, Nanda Prayag, Karna Prayag, Rudra Prayag, Dev Prayag • Yamuna originates from Yamunotri Glacier; joins Ganga at Prayagraj (Triveni Sangam with Saraswati) WESTWARD FLOWING RIVERS TRICK: 'NT' — Narmada and Tapi (Tapti) flow WEST into Arabian Sea. All other major peninsular rivers flow EAST
• Ganga tributaries (left bank): Gomti, Ghaghra, Gandak, Kosi • Ganga tributaries (right bank): Yamuna, Son, Chambal, Betwa • Brahmaputra tributaries: Dibang, Lohit, Subansiri, Teesta INDIAN LAKES: • Largest freshwater lake: Wular Lake (J&K) • Largest saltwater lake: Chilika Lake (Odisha) — also largest coastal lagoon in Asia • Highest lake: Cholamu Lake (Sikkim) — highest in India, also source of Teesta River • Lonar Lake (Maharashtra): Crater lake formed by meteorite impact — saltwater • Dal Lake: Jammu & Kashmir (famous for houseboats) • Sambhar Lake: Rajasthan — largest inland saltwater lake in India • Loktak Lake: Manipur — has floating islands called 'Phumdis' ---
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Shortcut 3 — 'Salt vs Fresh Lakes': Chilika (salt, largest coastal), Wular (fresh, largest), Sambhar (salt, inland).
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--- Examiners ask: 1. 'Which river flows through which state/city?' 2. 'Which river originates from which source?' 3. 'Left bank vs right bank tributaries' 4. 'Largest/Longest/Highest rivers and lakes' 5. 'Which rivers flow westward?' ---
Think — which river causes floods in Bihar? → Kosi River
Kosi frequently floods Bihar due to its changing course Answer: Kosi River Bonus: 'Sorrow of Bengal' = Damodar River (before dams); 'Sorrow of Odisha' = Mahanadi (old name) --- WORKED EXAMPLE 2 --- Q: Where does the Bhagirathi and Alaknanda meet to form the Ganga?
Recall the five Prayags — Devprayag is the last one
At Devprayag, Bhagirathi + Alaknanda merge
This combined river is called GANGA from this point Answer: Devprayag (Uttarakhand) ---
(BIG TRAP) --- Students confuse: Largest SALTWATER lake vs Largest INLAND saltwater lake. Chilika Lake = Largest saltwater lake overall (coastal lagoon, Odisha) Sambhar Lake = Largest INLAND saltwater lake (Rajasthan) Both answers appear in options. Read the question word carefully. This trap appears in almost every paper!
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