Jaldhaka
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Overview
The Jaldhaka rises from the Bitang lake area in east Sikkim, crosses the border region near Bhutan and flows south through the Duars of north Bengal.
It enters Bangladesh and joins the Brahmaputra (Jamuna). The Jaldhaka hydel project was one of the early power projects in north Bengal.
Jaldapara National Park and Gorumara National Park lie in the Duars nearby.
Geography and key facts
- Himalayan river, Brahmaputra basin
- Rises in east Sikkim
- Flows through the Duars, West Bengal
- Enters Bangladesh
Why it matters for UPSC
North-Bengal rivers – Teesta, Jaldhaka, Torsa, Sankosh – all flow into the Brahmaputra; useful with the Duars tea belt.
Note for UPSC
A north-Bengal river from Sikkim/Bhutan.
Prelims asks about tributaries, the states a river flows through, its basin and the projects on it, so trace the course on the map.
Asked in PYQs
No question in our Prelims bank names Jaldhaka yet.
Key facts
- Type
- River
- State / UT
- West Bengal
- River system
- Himalayan
- Basin
- Brahmaputra
- Extent on map
- 25.7°–27.3°N, 88.8°–89.7°E
From the Map Explorer data; positions are for orientation.
In the lessons
- Physical Features and Drainage of India (map lesson)
- Drainage Systems of India: Himalayan and Peninsular Rivers (map lesson)
- The Harappan (Indus Valley) Civilisation (map lesson)
- Harappan Civilisation: Sites, Town Planning and Phases (map lesson)
- Mahajanapadas and the Rise of Magadha (map lesson)