This chapter explores the water resources in India, their distribution, uses, and the challenges faced due to scarcity and pollution. Understanding this is crucial for sustainable development.
Water Resources - Quick Look Revision Guide
Your 1-page summary of the most exam-relevant takeaways from India - People and Economy.
This compact guide covers 20 must-know concepts from Water Resources aligned with Class 12 preparation for Geography. Ideal for last-minute revision or daily review.
Complete study summary
Essential formulas, key terms, and important concepts for quick reference and revision.
Key Points
Water scarcity is a major concern in India.
Increasing population and demand lead to severe water scarcity, affecting development and agriculture.
India has 4% of the world's water resources.
Despite covering 2.45% of the world’s surface, India holds only 4% of global water resources.
Surface water sources include rivers and lakes.
Main sources are rivers (over 10,360), lakes, ponds, and tanks crucial for water supply.
Groundwater is vital; 432 cubic km is replenishable.
Heavily used in states like Punjab and Haryana for irrigation, but over-extraction poses risks.
Water demand is highest for irrigation.
Agriculture uses 89% of surface water and 92% of groundwater in India, emphasizing irrigation needs.
Rainwater harvesting improves water availability.
Collecting and reusing rainwater recharges aquifers and reduces dependence on groundwater.
Deterioration of water quality is a growing issue.
Pollutants from industries and agriculture contaminate water, making it unfit for use.
Intensive irrigation leads to groundwater depletion.
Overuse in Punjab and Haryana has caused drastic drops in groundwater levels and quality.
Salinity in soil affects agricultural productivity.
Excessive irrigation without proper management leads to soil salinity, reducing crop yields.
National Water Policy emphasizes sustainable use.
Aims to promote efficient water use and conservation through community participation and legislation.
Pradhan Mantri Krishi Sinchayee Yojana launched in 2015.
Focuses on providing irrigation access to improve agricultural productivity and livelihoods.
Conjunctive use of water resources enhances management.
Combining surface and groundwater use ensures balanced water management across regions.
Watershed management is key for sustainability.
Involves conserving and regenerating resources to balance human needs with ecological health.
Public awareness is crucial for water conservation.
Educating communities on water issues fosters responsibility and collective action for sustainable practices.
Emerging water conflicts are rising.
Disputes over water resources among states highlight the need for better water management policies.
Recycling water can alleviate shortages.
Using reclaimed water for industry and domestic purposes reduces freshwater demand and promotes sustainability.
Interlinking rivers proposed as a solution.
Transferring water from surplus regions to deficit areas aims to address imbalances and ensure supplies.
Alert on groundwater pollution issues.
Contaminants like arsenic and fluoride in groundwater underscore the urgency for prevention measures.
Importance of cost-effective desalinization.
Desalinization could provide alternative water sources, especially in coastal and arid regions.
Utilization of technology in water management.
Innovative technologies can enhance water use efficiency and reduce wastage across sectors.
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