Skip to main content
Super TutorResources
Chapter 20 of 31
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Revision Notes

Water Resources -Irrigation

Telangana Open School (TOSS) · Class 12 · Geography

Quick revision notes for Water Resources -Irrigation — Telangana Open School (TOSS) Class 12 Geography. Key concepts, formulas, and definitions for last-minute revision.

41 questions30 flashcards5 concepts

Interactive on Super Tutor

Studying Water Resources -Irrigation? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

Try Super Tutor — Free

1,000+ Class 12 students started this chapter today

Key Topics to Revise

1

Water Resources and Their Significance

  • Water is a renewable but limited resource; only 3% of Earth's water is freshwater.
  • India has 4% of global water resources but supports 16% of the world’s population.
  • Per capita water availability in India has decreased from 5177 m³ in 1951 to 1829 m³ in 2001.
2

Sources of Water

  • Four main sources: Surface water, Groundwater, Atmospheric water, Oceanic water.
  • Surface water includes rivers, lakes, ponds, and reservoirs; major rivers are Indus, Ganga, Brahmaputra.
  • India’s reservoir storage capacity is 17,400 billion m³, up from 180 billion m³ at independence.
3

Means of Irrigation

  • Three main methods: Wells & Tube wells, Canals, Tanks.
  • Wells and tube wells contribute 46% of net irrigated area (2014–15), up from 41% in 2001–02.
  • Canal irrigation declined from 27% to 24% during the same period.
4

Water Conservation and Management

  • Rainwater harvesting involves collecting and storing rainwater or recharging groundwater.
  • Urban areas use rooftop harvesting; rural areas use traditional methods like bawlis and ponds.
  • Watershed development manages land and water in small basins to prevent erosion and recharge groundwater.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

Water is vital for lifeThe four main sources are surfaceIrrigation in India is primarily doneIt involves collecting and storing rainwaterFormulated in 1987 and updated

Frequently Asked Questions

What are the important topics in Water Resources -Irrigation for Telangana Open School (TOSS) Class 12 Geography?
Water Resources -Irrigation covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Water Resources -Irrigation — Telangana Open School (TOSS) Class 12 Geography?
Understand the core concepts first, then work through the 41 practice questions available for this chapter. Revise formulas and 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 Water Resources -Irrigation

All 31 chapters — Telangana Open School (TOSS) Class 12 Geography Revision Notes

For serious students

Get the full Water Resources -Irrigation chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for Telangana Open School (TOSS) Class 12 Geography.

Try Super Tutor Free
Try the full chapter — Free