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Drainage System

Rajasthan Board · Class 11 · Geography

Complete topic list for Drainage System in Rajasthan Board Class 11 Geography. Key concepts, sub-topics, and what to focus on for board exams.

74 questions22 flashcards5 concepts

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4 Topics · Rajasthan Board Class 11 Geography

Topics in Drainage System

1

Basic Concepts and Terminology

  • Drainage: Flow of water through well-defined channels
  • Drainage System: Network of channels that drain water from an area
  • Catchment Area: Specific area from which a river collects water
2

Drainage Patterns

  • Dendritic Pattern: Tree-like branching pattern (e.g., Northern Plains rivers)
  • Radial Pattern: Rivers flow in all directions from a central point (e.g., Amarkantak range)
  • Trellis Pattern: Primary tributaries parallel, secondary at right angles
3

Classification of Indian Drainage

  • Based on discharge orientation: Arabian Sea (23%) and Bay of Bengal (77%) drainage
  • Major river basins: >20,000 sq km catchment (14 basins)
  • Medium river basins: 2,000-20,000 sq km catchment (44 basins)
4

Himalayan Drainage System

  • Evolved through long geological history
  • Fed by both snowmelt and precipitation - hence perennial
  • Main systems: Indus, Ganga, and Brahmaputra

Key Concepts

The network of channels throughFour main patterns existEvolved through geological historyOlder than Himalayan system with broadBased on discharge

Frequently Asked Questions

What are the important topics in Drainage System for Rajasthan Board Class 11 Geography?
Drainage System covers several key topics that are frequently asked in Rajasthan Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Drainage System — Rajasthan Board Class 11 Geography?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

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

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