In Chapter 3 of Class 10 Geography, you will learn about water resources. The chapter begins with the availability of fresh water on Earth and how the situation of scarcity of water generates. The chapter discusses the pros and cons of constructing dams on rivers. In the end, the chapter talks about Rain Water Harvesting as a means to conserve water. Here, we have compiles the CBSE Notes for Class 10 Geography Chapter 3 on Water Resources.
Chapter At A Glance
- About three-fourth of the earth's surface is covered with water.
- Water is renewable resource.
- By 2025, about 2 billion people will live in water scarcity.
- 96.5 percent of the total volume of world's water is in oceans.
- India receives about 4 percent of the global precipitation and ranks 133 in the world in terms of water availability per person per annum.
- Total renewable water resources of India are 1897 sq. km.
- Roof top rain water harvesting is practised in Rajasthan.
- Underground tanks or tanks are used for storing rain water.
- Narmada Bachao Andolan and Tehri Dam Andolan are social movements against large dams.
- Dams are the temples of modern India.
Important Terms & Their Explanations
- Water - A renewable resource.
- Hydrosphere - 71% of earth has water.
- Water in oceans - 96.5%
- Fresh water - 2.5%
- India's rank - 133rd in world as regards availability of water per person.
- Precipitation - In India 4% of global precipitation.
- Sardar Sarovar Dam - On Narmada in Gujrat.
- Tehri Dam - In Uttrakhand
- Tankar - Underground tanks for storing water in Rajasthan.
- Total Renewable water resources of India - 1897 km annual.