---
title: "Teesta River: Source, Course and Water Dispute"
description: "The Teesta River is a 414-km transboundary river crucial for water-sharing discussions between India and Bangladesh, impacting UPSC geography studies."
url: "https://modeldiplomat.com/learn/glossary/teesta-river"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Teesta is a 414-kilometre transboundary Himalayan river that drains Sikkim and northern West Bengal before entering Bangladesh and joining the Brahmaputra.
- Why has no Teesta water-sharing treaty been signed between India and Bangladesh?
- How does the Teesta dispute differ from the Ganga water issue?
- Why is Chinese involvement in the Teesta project strategically sensitive for India?
- What is the source and outlet of the Teesta River?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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In September 2011, the India–Bangladesh interim Teesta water-sharing agreement collapsed at the last moment after West Bengal Chief Minister Mamata Banerjee refused to endorse it during Prime Minister Manmohan Singh's Dhaka visit.

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