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Concept Maps

Drainage — Concept Maps

ICSE · Class 12 · Geography

4 concept maps of Drainage for ICSE Class 12 Geography, each also written out as a text outline. Part of the ICSE Class 12 Geography syllabus.

44 questions38 flashcards5 concepts

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4 Concept Maps

Mind map showing the two major river systems and factors influencing their evolution

Mind map showing the two major river systems and factors influencing their evolution

The map in words

  • Evolution of Indian Rivers
    • Himalayan Rivers
      • Younger systems
      • High altitude origin
      • Cut through mountains
      • Perennial flow
    • Peninsular Rivers
      • Ancient systems
      • Lower elevation origin
      • Flow across plateau
      • Seasonal flow
    • Influencing Factors
      • Tectonic movements
      • Erosion processes
      • Climate patterns
      • Relief features

Flowchart showing the process of Indobrahma river dismemberment into present-day systems

Flowchart showing the process of Indobrahma river dismemberment into present-day systems

The map in words

  • Miocene Period Indobrahma River
    • Mighty river from Assam to Punjab
      • Deposited alluvium forming Shiwalik hills
  • Pliestocene upheavals in western Himalayas
    • Dismemberment begins
      • Indus system
      • Ganga system
      • Brahmaputra system
  • Headward erosion by tributaries
  • Yamuna captured from Indus

Flowchart showing major criticisms of the Indobrahma Theory

Flowchart showing major criticisms of the Indobrahma Theory

The map in words

  • Indobrahma Theory
    • Criticisms
      • Massive river size never proven
        • Theory questioned
      • Shiwalik deposits from smaller rivers possible
      • Ganga delta deposits timeline inconsistent
      • Rajmahal-Shillong gap requires more time
      • Tipam sandstones evidence contradicts

Drainage of India

Drainage of India

The map in words

  • Drainage of India
    • Evolution of Indian drainage
    • Himalayan river system
    • Peninsular river system
    • Indus drainage system
    • Ganga drainage system
    • Brahmaputra drainage system
    • Rivers flowing into the Bay of Bengal
    • Rivers flowing into the Arabian Sea

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Frequently Asked Questions

What are the important topics in Drainage for ICSE Class 12 Geography?
Key topics in Drainage include Evolution of Indian Drainage, Himalayan River System, Indus Drainage System, Ganga Drainage System. Study these first, then practise questions on each for the ICSE Class 12 board exam.
What do the concept maps for Drainage show?
The 4 maps show how the ideas in Drainage connect: Mind map showing the two major river systems and factors influencing their evolution; Flowchart showing the process of Indobrahma river dismemberment into present-day systems. Each map is also written out as an outline on this page.
How should I revise Drainage for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 44 practice questions on Drainage. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Drainage

All ICSE Class 12 Geography Concept Maps

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