• Uses bamboo pipes

• Water-saving, eco-friendly

• Ideal for hilly terrain

Q1. Explain the major causes of water scarcity in India.

Water scarcity in India is caused by a combination of natural and human factors. Population growth increases domestic water demand, while industries consume huge quantities of water for manufacturing and cleaning. Agriculture uses nearly 70% of freshwater, often wastefully. Uneven rainfall and climate change worsen the situation. Pollution makes many rivers unfit for use, reducing available clean water.

Key Points:

• Rapid population growth

• Industrialisation demanding more water

• Over-irrigation and water-intensive crops

• Uneven rainfall distribution

• Over-extraction of groundwater

• Water pollution from industries & sewage

• Climate change causing droughts

⭐ Q2. Describe multipurpose river valley projects and explain their benefits and problems.

Multipurpose river valley projects are large dams designed to meet many needs such as irrigation, electricity generation, flood control, and drinking water supply. They promote regional development and support agriculture. However, these projects also create major challenges including displacement of people, environmental destruction, and unequal distribution of benefits.

Benefits:

• Irrigation for agriculture

• Hydroelectric power generation

• Reduction of flood damage

• Drinking & industrial water supply

• Soil conservation & fisheries development

Problems:

• Displacement of villagers

• Submergence of forests

• Loss of biodiversity

• Extremely high construction costs

• Inter-state water disputes

⭐ Q3. Explain traditional rainwater harvesting systems in India with examples.

Traditional harvesting systems were developed in India based on local needs, climate, and geography. These systems collected rainwater, reduced dependence on rivers, and supported farming communities for centuries. They required no modern technology but were highly efficient and sustainable.

Examples:

• Rajasthan: Johads (earthen dams), tankas (underground storage), khadins (runoff farming)

• Himachal Pradesh: Kulhs to divert glacial water

• Meghalaya: Bamboo drip irrigation

• Tamil Nadu: Eris tank system

• Maharashtra: Bhandaras and tals

Why important:

• Low-cost

• Eco-friendly

• Community-managed

• Highly effective in drought regions

⭐ Q4. What are the criticisms of large dams? Explain environmental, social, and economic issues.

Large dams, though beneficial, face several criticisms. From an environmental perspective, they destroy forests, disturb river flow, and cause loss of biodiversity. Socially, they displace thousands of people and disrupt communities. Economically, they require heavy investment and take years to build. Benefits are often unevenly distributed among states.

Key Points:
Environmental Issues:

• Forest submergence

• Loss of wildlife habitats

• Siltation and river disturbance

Social Issues:

• Displacement of tribal people

• Loss of livelihood

• Poor rehabilitation

Economic Issues:

• High construction cost

• Long delays

• Unequal water sharing

⭐ Q5. Explain sustainable water management practices important for India’s future.

Sustainable water management ensures that water is used wisely, conserved properly, and protected from pollution. It is essential because India faces increasing water scarcity due to population growth and climate change. Sustainable practices help maintain groundwater levels, reduce wastage, and protect rivers.

Key Points:

• Drip and sprinkler irrigation reduce wastage

• Rainwater harvesting increases groundwater

• Recycling industrial wastewater

• Preventing river pollution

• Protecting forests and watersheds

• Changing cropping patterns to less water-intensive crops

• Public awareness and government policies