NCERT-aligned Class 9 Geography topic. Every item is anchored to a real location on India's map — built for boards (CBSE, ICSE, state) and UPSC aspirants.
What is a drainage system?
The network of rivers and streams that drain an area into a larger body of water (sea or lake)
Two major drainage systems of India?
Himalayan Drainage System and Peninsular Drainage System
Key difference between Himalayan and Peninsular rivers?
Himalayan rivers are perennial (flow throughout the year) while most Peninsular rivers are seasonal
Why are Himalayan rivers perennial?
They originate from glaciers and receive water from both rain and melting snow throughout the year
Major Himalayan river systems?
Indus, Ganga, and Brahmaputra river systems
Major Peninsular river systems?
Godavari, Krishna, Kaveri, Narmada, Tapi, and Mahanadi
Significance of drainage system?
Provides water for irrigation, drinking, industries, transportation, and hydropower
Challenges?
Floods, river pollution, inter-state river disputes, siltation, and climate change impact
Future focus?
River rejuvenation, interlinking of rivers (controversial), pollution control, and sustainable water management
What is a distinguishing feature of this feature?
India has one of the most diverse drainage systems in the world due to varied topography
Origin of Indus River?
Near Lake Mansarovar in Tibet
Length of Indus?
2,880 km (one of the longest rivers in the world)
This topic is part of the NCERT Class 9 Geography syllabus, drawn from the chapter Ch 3: Drainage. Content is cross-referenced against the latest NCERT textbook editions + standard reference works.
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