With reference to river Teesta, consider the following statements: 1. The source of river Teesta is the same as that of Brahmaputra but it flows through Sikkim. 2. River Rangeet originates in Sikkim and it is a tributary of river Teesta. 3. River Teesta flows into Bay of Bengal on the border of India and Bangladesh. Which of the statements given above is/are correct?
Contents20
- A1 and 3 only
- B2 only
- C2 and 3 only
- D1, 2 and 3
Show answer
Answer: (B) 2 only
Statement 1 is incorrect:
The Teesta River does NOT share the same source as the Brahmaputra.
The Teesta originates from the Pahunri (or Teesta Kangse) glacier at an altitude of about 7,068 metres in the Sikkim Himalayas and flows southward through Sikkim.
The Brahmaputra, on the other hand, originates near the Angsi Glacier in Tibet (near Mount Kailash/Lake Mansarovar area).
These are completely different sources separated by hundreds of kilometres.
Statement 2 is correct:
The Rangeet River (also spelled Rangit) does originate in Sikkim and is the main tributary of the Teesta River.
The two rivers meet near Teesta Bazaar in the Darjeeling district of West Bengal.
Statement 3 is incorrect:
The Teesta River does NOT flow directly into the Bay of Bengal at the India-Bangladesh border.
Instead, after flowing through Sikkim and West Bengal, the Teesta enters Bangladesh and merges with the Brahmaputra River (called Jamuna in Bangladesh), which then flows into the Bay of Bengal.
So the Teesta is a tributary of the Brahmaputra system, not an independent river flowing into the Bay of Bengal.
The Teesta has been frequently in the news due to the India-Bangladesh water-sharing dispute — a bilateral agreement on sharing Teesta waters has been pending for years.
So only statement 2 is correct.
The Teesta River has been at the center of a prolonged India-Bangladesh water-sharing dispute, with negotiations for a bilateral agreement ongoing for years.
UPSC is testing detailed knowledge of northeastern river systems, particularly which rivers are independent versus tributaries of major systems like the Brahmaputra.
Students often confuse Himalayan river sources and incorrectly assume rivers flowing through similar regions share origins or destinations.
Teesta River System
Geography river Teesta Teesta Sikkim
Teesta River: Source, Course & India-Bangladesh Relations
Teesta originates from Pahunri glacier in Sikkim Himalayas at 7,068m altitude
Flows through Sikkim → West Bengal → Bangladesh before joining Brahmaputra/Jamuna
Rangeet River is its main tributary, originating in Sikkim
Subject of India-Bangladesh water sharing dispute for years
Overview
The Teesta River is a major trans-boundary river flowing from the Sikkim Himalayas to Bangladesh. Unlike many other rivers, it does not flow directly into the Bay of Bengal but merges with the Brahmaputra system in Bangladesh.
Teesta vs Brahmaputra Sources
River | Source | Location | Altitude |
|---|---|---|---|
Teesta | Pahunri glacier (Teesta Kangse) | Sikkim Himalayas | ~7,068m |
Brahmaputra | Angsi glacier | Tibet (near Mount Kailash) | ~5,150m |
Teesta River Course
%%{init: {"flowchart": {"wrappingWidth": 460}}}%%
flowchart TD
s1["`**Origin**
**Pahunri glacier** in North Sikkim at 7,068m altitude`"]
s2["`**Sikkim Flow**
Flows **southward** through Sikkim valleys`"]
s3["`**Rangeet Confluence**
Meets **Rangeet River** near Teesta Bazaar, Darjeeling (WB)`"]
s4["`**West Bengal**
Continues through **Jalpaiguri** and **Cooch Behar** districts`"]
s5["`**Bangladesh Entry**
Enters Bangladesh near **Dimla**`"]
s6["`**Final Destination**
Merges with **Brahmaputra (Jamuna)** → Bay of Bengal`"]
s1 --> s2
s2 --> s3
s3 --> s4
s4 --> s5
s5 --> s6Teesta Basin Map
Source: Sikkim Project — THE TEESTA NO LONGER FLOWS — Sikkim Project · sikkimproject.org
Question Analysis
This question tests knowledge of river sources and drainage patterns. Statement 1 creates confusion by linking Teesta to Brahmaputra source — they originate from completely different glaciers hundreds of kilometres apart. Statement 3 tests whether students know Teesta merges with Brahmaputra rather than flowing independently to the Bay of Bengal.
Trap: Teesta and Brahmaputra have the same source — they originate from different glaciers in different regions
Trap: Teesta flows directly into Bay of Bengal — it merges with Brahmaputra first, then reaches the sea
Trap: Confusing Teesta with Torsa or Jaldhaka — other rivers in the same region with different courses
Rangeet River
Geography River Rangeet Rangeet
Rangeet River: Main Tributary of Teesta
Rangeet (also spelled Rangit) originates in Sikkim
Main tributary of Teesta River
Confluence with Teesta near Teesta Bazaar, Darjeeling district
Key Facts
The Rangeet River is the most important tributary of the Teesta. It originates in the hills of Sikkim and flows southeast to meet the Teesta near the West Bengal border.
Also known as Rangit River
Confluence point: Teesta Bazaar in Darjeeling district
Forms part of the larger Teesta river system
UPSC Relevance
Statement 2 in the question is the only correct statement. UPSC tests knowledge of major tributaries, especially in trans-boundary river systems. The Rangeet-Teesta confluence is a geographical landmark in the Darjeeling-Sikkim border region.
Brahmaputra River System
Geography Brahmaputra
Brahmaputra: Source, Course & Major Tributaries
Originates from Angsi glacier near Mount Kailash in Tibet
Called Yarlung Tsangpo in Tibet, Brahmaputra in India, Jamuna in Bangladesh
Teesta merges with it in Bangladesh before reaching Bay of Bengal
Flows 2,900+ km through China, India, and Bangladesh
Trans-boundary Character
The Brahmaputra is one of Asia's major trans-boundary rivers, flowing through three countries with different names in each. Its source near Mount Kailash is completely separate from the Teesta's Sikkim origin.
Brahmaputra Names by Region
Country/Region | River Name | Key Features |
|---|---|---|
Tibet (China) | Yarlung Tsangpo | Flows east along Tibet plateau |
Arunachal Pradesh | Siang/Dihang | Enters India through gorges |
Assam | Brahmaputra | Major river of Assam valley |
Bangladesh | Jamuna | Merges with Teesta, then Ganges |
Major Tributaries in India
Left bank: Burhi Dihing, Dhansiri, Kalang
Right bank: Subansiri, Kameng, Manas, Sankosh
In Bangladesh: Teesta joins from the right bank before final confluence
Trap: Teesta and Brahmaputra have same source — Angsi glacier (Tibet) vs Pahunri glacier (Sikkim)
Trap: Brahmaputra originates in India — it originates in Tibet, enters India through Arunachal
India-Bangladesh Water Disputes
World Affairs (International Relations)
Teesta Water Sharing: Key India-Bangladesh Issue
Teesta water sharing agreement between India-Bangladesh has been pending for years
West Bengal government concerns have delayed the agreement
Part of broader trans-boundary river management challenges in South Asia
Background
The Teesta water sharing has been a key bilateral issue between India and Bangladesh. While both countries have agreed on sharing Ganges waters (1996 treaty), the Teesta agreement remains stalled despite multiple rounds of negotiations.
Key Issues
West Bengal's concerns: State government worried about water availability for irrigation
Bangladesh's position: Needs assured water flow, especially during dry season
Strategic importance: Teesta flows through both countries' agricultural regions
Political complexity: Involves federal-state coordination in India's water policy
UPSC Context
Teesta frequently appears in current affairs due to India-Bangladesh summits and water diplomacy. Understanding trans-boundary river disputes helps in questions on bilateral relations and water resource management.
Himalayan River Systems
Geography
Himalayan Rivers: Characteristics & Major Systems
Himalayan rivers are perennial and glacier-fed with snow-melt flow
Three major systems: Indus, Ganga, Brahmaputra
Flow through deep gorges and have high erosional power
Many are trans-boundary rivers crossing multiple countries
Major Himalayan River Systems
# Himalayan Rivers
## Indus System
- Jhelum
- Chenab
- Ravi
- Beas
- Sutlej
## Ganga System
- Yamuna
- Gomti
- Ghaghara
- Gandak
- Kosi
## Brahmaputra System
- Teesta
- Subansiri
- Manas
- SankoshHimalayan vs Peninsular Rivers
Feature | Himalayan Rivers | Peninsular Rivers |
|---|---|---|
Nature | Perennial (year-round flow) | Seasonal (monsoon dependent) |
Source | Glaciers and snow-melt | Plateaus and hills |
Age | Younger geological formation | Older geological formation |
Course | Long with multiple tributaries | Shorter with fewer tributaries |
Valley | V-shaped deep gorges | Broad shallow valleys |
Examples | Ganga, Yamuna, Teesta | Narmada, Tapti, Cauvery |
Trap: All Himalayan rivers flow east to west — Indus flows west, others flow east
Trap: Himalayan rivers are seasonal — they are perennial due to glacier-fed nature