---
title: "Peninsular River System: India Drainage | Model Diplomat"
description: "The Peninsular River System includes India's older rivers from the Deccan plateau, primarily flowing east to the Bay of Bengal, crucial for agriculture."
url: "https://modeldiplomat.com/learn/glossary/peninsular-river-system"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Peninsular River System comprises India's older, mostly non-perennial rivers draining the Deccan plateau, the largest of which flow eastward into the Bay of Bengal.
- Why are most peninsular rivers non-perennial while Himalayan rivers flow year-round?
- Why do the Narmada and Tapi form estuaries instead of deltas?
- Which peninsular rivers are subject to inter-state water tribunals?
- Are the Chambal and Betwa considered part of the peninsular system?

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

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