CLASS 10 GEOGRAPHY · CHAPTER 3 · STUDY NOTES
Water Resources
Follow the water cycle and harvesting systems. Explain scarcity, compare a dam’s benefits and costs, and connect upstream decisions to downstream users.
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Water as a Renewable Resource
Water moves through a natural cycle, but that does not guarantee enough usable water in every place.Water returns, but not always where needed
- Evaporation
Water enters the atmosphere
- Condensation
Clouds form
- Precipitation
Water falls to land and sea
- Runoff and recharge
Water flows and enters the ground
Choose an idea to look closer.
- Hydrological cycle
- Continuous circulation of water through land, air and water bodies.
Take a moment. What do you think?
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Question
How does water maintain its status as a renewable resource?
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The Complex Causes of Water Scarcity
A water shortage can come from low supply, high demand, pollution or unequal access.Scarcity is more than low rainfall
Several pressures combine
Homes and food production
Water and energy requirements
Groundwater falls
Availability is unevenly shared
Choose an idea to look closer.
- Water scarcity
- Insufficient usable water to meet needs in a place and time.
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Question
Why might a region with high rainfall still suffer from water scarcity?
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Water Quality and Government Initiatives
A supply must be reliable and safe—not simply connected to a pipe.Plenty of water can still be unusable
- Water present
Rainfall, rivers or flooded areas
- Pollution barrier
Waste and contaminants can make water unsafe
Choose an idea to look closer.
- Water quality
- The characteristics determining whether water is suitable for a given use.
| Programme in the chapter | Aim | Textbook target or reported scope |
|---|---|---|
| Jal Jeevan Mission (JJM) | Provide potable piped water to rural households | 55 litres per person per day (2020–21 source) |
| Atal Bhujal Yojana | Manage groundwater in water-stressed areas | 8,220 gram panchayats in seven states (2022–23 source) |
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Question
What is the specific water delivery target of the Jal Jeevan Mission?
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Hydraulic Structures in Ancient India
People have long built structures to collect, store and direct water.Water management has a long history
- Ancient period
Channels, reservoirs and embankments
- 11th century
Bhopal lake construction
- 13th–14th century
Hauz Khas supplied the Siri area
Choose an idea to look closer.
- Hydraulic structure
- A structure built to store, divert or manage water.
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Question
Name a significant water management structure built in the 11th century.
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Multi-Purpose River Projects
A multi-purpose project uses stored river water for several needs.One reservoir, several purposes
Stores water behind a dam
Water for crops
Water drives turbines
Domestic and industrial needs
Depends on conditions and operation
Choose an idea to look closer.
- Multi-purpose project
- A water project designed to serve several uses.
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Question
Why did Jawaharlal Nehru refer to dams as the 'temples of modern India'?
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