Water Resources is a chapter in the CBSE Class 12 Geography syllabus from India - People and Economy. This chapter hub brings together revision notes, practice questions, worksheets, flashcards to help students learn, practice, and revise Water Resources effectively.

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Water Resources

NCERT Class 12 Geography Chapter 4: Water Resources (Pages 41–52)

Class 12 CBSE hub Geography chapters India - People and Economy

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Summary of Water Resources

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Water Resources at a Glance

Board

CBSE

Class

Class 12

Subject

Geography

Book

India - People and Economy

Chapter

Pages

41–52

Resources

6 study resources

Water Resources Summary

In this chapter, we will learn about water resources in India and their significance in our daily lives. Water is a vital and cyclic resource, with only a small fraction being freshwater available for human use. India holds a significant proportion of the world's water resources, but its population increase and pollution are leading to water scarcity. The total water available from precipitation annually is about four thousand cubic kilometers, yet only a fraction can be utilized due to various limitations. Surface water sources include rivers, lakes, ponds, and tanks, with the majority being used for agriculture, which dominates water usage at eighty-nine percent for surface water and ninety-two percent for groundwater. We will investigate how irrigation has become essential, especially in drought-prone regions where rainfall is inconsistent. Major projects have been initiated to enhance irrigation facilities, helping increase agricultural production. However, there are also significant concerns about water quality as pollution from industrial, agricultural, and domestic sources poses a severe risk to available resources. Emerging water problems include dwindling per capita availability, which is being aggravated by pollution and mismanagement. Watershed management and rainwater harvesting are highlighted as effective strategies for conserving and managing water resources sustainably. Various government initiatives, including the Pradhan Mantri Krishi Sinchayee Yojana and the Jal Kranti Abhiyan, aim to provide better water access and management practices nationwide. Ultimately, exploring these themes will enable us to understand the complexities of water resource management in India and the importance of conservation practices for future generations.

Water Resources Revision Guide

Download the Water Resources revision guide with key points, summaries, and quick revision notes for CBSE Class 12 Geography.

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.

Water Resources Practice Questions & Answers

Practice important questions and exam-style problems from Water Resources. These questions cover key topics from the CBSE Class 12 Geography syllabus.

How to practice: Start with the questions below to test your understanding of Water Resources. Use the revision guide to review concepts you find difficult, then come back and retry the questions for better retention.

Which of the following is NOT considered a major source of surface water in India?

Single Answer MCQ

Q-00087950

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What percentage of the world's freshwater is effectively available for human use?

Single Answer MCQ

Q-00087951

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Which state in India is known for having vast lagoons and brackish water bodies?

Single Answer MCQ

Q-00087952

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What is the total utilizable water resource in India from surface water?

Single Answer MCQ

Q-00087953

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Which river is known for having a significant catchment area contributing to India's surface water resources?

Single Answer MCQ

Q-00087954

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In which region of India is groundwater utilization the highest?

Single Answer MCQ

Q-00087955

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What percentage of surface water utilization in India is dedicated to agriculture?

Single Answer MCQ

Q-00087956

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Which of the following river basins has not yet harnessed much of its annual water flow?

Single Answer MCQ

Q-00087957

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View all 88 Water Resources questions

What is a primary reason for the high demand for irrigation water in India?

What is the primary use of water in India according to current trends?

The total replenishable groundwater resources in India are approximately how many cubic kilometers?

Which of the following describes the major challenge facing India regarding water resources?

Why is the development of irrigation prioritized in India's Five Year Plans?

Which statement about surface water utilization in India is FALSE?

What percentage of the Earth's surface is covered by water?

What is the main source of freshwater available for human use on Earth?

Which river basin accounts for the highest share of surface water resources in India?

Which sector uses the majority of water resources in India?

How much of India's fresh water resources is estimated to be utilizable?

Which of the following states utilizes a high percentage of its groundwater resources?

What is the estimated total annual precipitation available in India?

Which project is NOT classified as a multipurpose river valley project in India?

What percentage of India's population is dependent on agriculture according to the text?

Which of the following methods is NOT a way to conserve water resources?

Which part of India is particularly drought-prone?

What is the total replenishable groundwater resource of India?

Which of the following water bodies predominantly consists of brackish water?

What is a significant consequence of increasing water demand in India?

Which of the following sectors is expected to increase its share in water usage in the future in India?

What percentage of surface water in India is used for agriculture?

Which Indian states utilize a high percentage of groundwater resources?

Why is irrigation essential for agriculture in India?

What is the primary driving factor of water demand for irrigation in India?

What is the estimated total replenishable groundwater resource in India?

What percentage of groundwater is utilized by the industrial sector in India?

Which river basin in India is known for high surface water resources due to its catchment area?

Which of the following states is utilizing a small proportion of its groundwater potential?

What is the primary factor contributing to the decline in per capita water availability in India?

The main purpose of multipurpose river valley projects in India is to...

Which of the following is a major consequence of groundwater depletion in agricultural states?

How much of India's total available surface water can currently be utilized?

What is a significant problem caused by agricultural runoff in water resources?

As per the current usage trends, which sector is expected to increase its water demand in the future?

Which Indian states primarily face challenges related to high fluoride concentration in groundwater?

Which season in India is primarily associated with high rainfall?

What is the main objective of the Pradhan Mantri Krishi Sinchayee Yojana?

Which project is not associated with irrigation development in India?

What impact does over-extraction of groundwater typically have on the environment?

Which area of India is known for significant drought-prone conditions affecting water demand?

Which crop is noted for having a high water requirement necessitating irrigation?

Which of the following is the correct order of water utilization in India?

What is one consequence of intensive irrigation methods used in agriculture?

Groundwater utilization is high in which states of India?

How does the lack of irrigation affect agricultural productivity?

What is one of the goals of sustainable water conservation practices?

The reduction of available water resources in India can primarily be attributed to:

What is the main challenge associated with high-yield crop varieties in terms of water use?

What is a likely effect of climate change on water resources in India?

What factor contributes to the pollution of water resources in urban areas?

What is the estimated total replenishable groundwater resources in India?

In which of the following states is groundwater utilisation comparatively high?

Which of the following accounts for the highest percentage of groundwater utilisation in India?

What is one major consequence of over-exploiting groundwater resources?

Which region of India faces severe challenges in groundwater replenishment due to high agricultural demand?

What effect does groundwater over-exploitation have on soil quality?

What is one major factor that hinders the exploitation of groundwater in states like Chhattisgarh?

Why is groundwater considered a critical resource in drought-prone areas?

Which of the following is NOT a consequence of groundwater depletion?

What management practice is crucial for conserving groundwater on a community level?

Which practice can help in mitigating groundwater depletion in agricultural areas?

What is the term for water that is used multiple times before being released into the environment?

How does urbanisation impact groundwater resources?

What is a major drawback of tubewell irrigation?

Which state is an example where groundwater depletion has led to increased fluoride concentration?

What is the main objective of the Jal Kranti Abhiyan launched in 2015-16?

Which method primarily helps in reducing groundwater pollution?

Which of the following is a major source of river pollution in India?

Which practice is essential for sustainable water management in agriculture?

Which region in India is most likely to face water stress due to climate change?

What is a significant consequence of allowing untreated sewage into rivers?

Which of the following traditional methods is used in India for rainwater harvesting?

In which region is groundwater utilization particularly high among Indian states?

Which of the following best defines watershed management?

What is the role of the Central Pollution Control Board (CPCB)?

Which sector uses the highest proportion of total water in India?

What is one major challenge to implementing the Water (Prevention and Control of Pollution) Act effectively?

Which of the following pollutants primarily affects groundwater quality?

Which technology is crucial for water recycling in urban areas?

Single Answer MCQ

Q-00088037

View explanation

Water Resources Practice Worksheets

Download and practice Water Resources worksheets to improve problem-solving accuracy and speed for CBSE Class 12 Geography exams.

Water Resources - Practice Worksheet

This worksheet covers essential long-answer questions to help you build confidence in Water Resources from India - People and Economy for Class 12 (Geography).

Practice

Questions

Define water resources and classify their types in India, providing examples.

Water resources refer to the sources of water that are useful or potentially useful to humans. They can be classified into surface water (rivers, lakes) and groundwater (aquifers) with examples such as the Ganga river and the aquifers in Punjab.

Discuss the significance of irrigation in Indian agriculture.

Irrigation is crucial in agriculture for increasing crop yield and ensuring food security. With two-thirds of India's population engaged in agriculture, irrigation methods like canal systems and borewells help counteract rainfall variability, particularly in drought-prone regions.

Explain the problems associated with groundwater depletion in India.

Groundwater depletion leads to a decline in water tables, causing wells to dry up. It also results in increased salinity and potential contamination. For example, states like Punjab and Haryana face severe depletion due to over-extraction for irrigation.

Analyze the main sources of surface water in India and their challenges.

The primary sources of surface water include rivers, lakes, and tanks. Challenges include pollution, siltation, and disputes over water use among states. For instance, the Ganga faces severe pollution due to industrial waste.

Describe the impact of population growth on water demand in India.

India's population growth increases water demand for domestic, industrial, and agricultural use. This pressure exacerbates issues like over-extraction and pollution, leading to water scarcity and conflicts over water resources.

What are the major issues of water quality in India? Discuss potential solutions.

Water quality issues in India include contamination from industries, agriculture, and domestic sources. Solutions involve stricter regulations, public awareness campaigns, and implementing sewage treatment technologies.

Explain the concept and significance of watershed management.

Watershed management involves the sustainable management of water resources within a watershed. It is significant for conserving water, preventing soil erosion, and ensuring equitable distribution among users. Successful examples include community-led initiatives in Rajasthan.

Evaluate the effectiveness of rainwater harvesting in addressing water scarcity.

Rainwater harvesting helps to capture and store rainwater for various uses, thus enhancing water availability and reducing dependency on groundwater. For instance, urban areas benefit significantly during dry spells.

Discuss the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) and its objectives.

PMKSY aims to promote irrigation efficiency and improve access to water resources for farming. Objectives include enhancing water availability, strengthening infrastructure, and encouraging the adoption of new technologies for irrigation.

How does water pricing influence water conservation practices?

Proper water pricing balances usage and conserves resources by discouraging wasteful practices. It ensures that the cost incentivizes users to adopt conservation measures and reduces overuse, particularly in agriculture.

Water Resources - Mastery Worksheet

This worksheet challenges you with deeper, multi-concept long-answer questions from Water Resources to prepare for higher-weightage questions in Class 12.

Mastery

Questions

Discuss the impact of population growth on water resources in India and how it influences water management strategies across different states.

Population growth leads to increased water demand, especially for agriculture and domestic use. This results in depletion of water resources, necessitating improved management strategies, including rainwater harvesting and watershed management. Comparison across states like Punjab and Rajasthan can illustrate varied strategies based on resource availability.

Explain the significance of the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) in addressing water scarcity in agricultural practices.

PMKSY aims to enhance irrigation access through efficient water use practices. It promotes technologies like drip irrigation and helps reduce water wastage. Case studies from states implementing these technologies, such as Maharashtra and Gujarat, can show effectiveness.

Compare and contrast surface and groundwater resources in India, detailing their distribution, usage, and challenges faced.

Surface water accounts for approximately 1,869 cubic km, while groundwater resources are about 432 cubic km. An analysis of agricultural reliance on each, especially in Punjab versus Rajasthan, reveals challenges like over-extraction and pollution affecting groundwater sources.

Assess the role of community participation in watershed management projects, using Ralegan Siddhi as a case study.

Ralegan Siddhi shows how community-led initiatives can enhance water conservation. Grassroots participation led to the construction of percolation tanks and improved crop management, showcasing successful watershed management that can be replicated elsewhere.

Investigate the relationship between agricultural practices and water quality in India, focusing on the impact of fertilizers and pesticides.

Excessive use of agrochemicals leads to significant water pollution in rivers and groundwater. The deterioration of water quality in the Yamuna exemplifies how agricultural practices affect aquatic ecosystems and public health.

Evaluate the reasons and implications of groundwater depletion in northern Indian states, particularly in Punjab and Haryana.

Groundwater depletion results from over-extraction for irrigation in these states. The implications include reduced agricultural productivity, rising salinity levels, and socio-economic issues arising from resource scarcity.

Discuss the interlinking of rivers as a solution for water scarcity in India, covering its potential benefits and drawbacks.

Interlinking rivers could redistribute surplus water from flood-prone areas to drought-prone regions. However, ecological concerns and social displacement are significant drawbacks that must be addressed through comprehensive planning.

Explore the effects of climate change on water resources in India, and how it exacerbates existing water crises.

Climate change causes erratic rainfall patterns, increasing droughts and floods, thereby intensifying water scarcity. Regions like the Deccan Plateau are particularly vulnerable, which further complicates agricultural practices.

Analyze the role of government policies in managing water resources, particularly focusing on the National Water Policy 2012.

The National Water Policy emphasizes sustainable water management, promoting integrated water resource management at all levels. Its effectiveness can be debated through the implementation success stories and challenges faced by various states.

Discuss potential solutions to improve water conservation in urban areas, considering the role of technology and public awareness.

Technological innovations such as rainwater harvesting systems and smart water meters can help urban areas manage water better. Public awareness campaigns are equally crucial to drive these changes and involve the community.

Water Resources - Challenge Worksheet

The final worksheet presents challenging long-answer questions that test your depth of understanding and exam-readiness for Water Resources in Class 12.

Challenge

Questions

Evaluate the implications of over-extraction of groundwater on agricultural practices in Punjab and Haryana.

Discuss the reduction in groundwater levels, impact on crop yield, and long-term sustainability concerns. Provide examples of specific crops affected.

Analyze how climate change could exacerbate water scarcity issues in India, particularly focusing on monsoon patterns.

Discuss implications on agriculture, drinking water supplies, and potential socio-political conflicts.

Critically assess the effectiveness of the Pradhan Mantri Krishi Sinchayee Yojana in improving irrigation accessibility.

Evaluate both successes and shortcomings, including direct impacts on rural livelihoods and water conservation efforts.

Explore the role of watershed management in achieving sustainable development in India's rural areas.

Discuss specific case studies like Ralegan Siddhi and how community involvement creates an effective governance model.

Discuss the impacts of water quality deterioration on public health in urban India.

Evaluate health outcomes related to contaminated water sources, including specific diseases and demographic vulnerabilities.

Examine the potential of rainwater harvesting as a solution to urban water crisis in India.

Assess its implementation, benefits, challenges, and compare against other water-saving technologies.

Evaluate the challenges and advantages of interlinking rivers in India.

Explore environmental, social, and economic implications of this large-scale water management strategy.

Critically analyze the role of government policies in water conservation and management in India.

Discuss the effectiveness of policies like the National Water Policy (2012) and Jal Kranti Abhiyan.

Investigate the socio-economic conflicts arising from water allocation among agriculture, industry, and domestic sectors.

Evaluate case studies of specific regions where water disputes have escalated and their resolutions.

Assess the impact of industrial waste on freshwater resources and propose solutions.

Evaluate the policies that aim to reduce industrial pollution and their effectiveness.

Water Resources Frequently Asked Questions

Explore the chapter 'Water Resources' from Class 12 Geography, covering essential topics such as surface water, groundwater, water demand, conservation strategies, and India’s water management policies.

QWhat percentage of India's population depends on agriculture?

Approximately two-thirds of India's population depend on agriculture, highlighting the sector's crucial role in the country's economy and water usage patterns.

QWhat are the major sources of surface water in India?

The primary sources of surface water in India include rivers, lakes, ponds, and tanks, with India housing around 10,360 rivers and their tributaries.

QHow much freshwater is available for human consumption?

Freshwater constitutes only about 3% of total water on Earth, and a very small proportion is effectively available for consumption due to geographical and seasonal variations.

QWhat is the role of irrigation in Indian agriculture?

Irrigation is vital in Indian agriculture as it accommodates the variability in rainfall, enabling multiple cropping and higher productivity, crucial for food security.

QWhat are the emerging water problems in India?

Emerging water problems in India include water scarcity due to overutilization, pollution from industrial and agricultural effluents, and shrinking freshwater resources.

QWhat is watershed management?

Watershed management refers to the efficient management and conservation of surface and groundwater resources, ensuring sustainable use through community participation.

QHow does groundwater utilization vary across Indian states?

Groundwater utilization is highest in Punjab, Haryana, and Tamil Nadu, while states like Chhattisgarh and Odisha utilize only a small portion of their groundwater potential.

QWhat percentage of water is used for irrigation in India?

Agriculture is the dominant user of water in India, accounting for approximately 89% of surface water and 92% of groundwater utilization.

QWhat initiatives has the Indian government taken for water management?

The government has launched initiatives like the Pradhan Mantri Krishi Sinchayee Yojana and the Jal Kranti Abhiyan to enhance irrigation access and promote water conservation.

QHow does water pollution affect freshwater availability?

Water pollution from industrial and domestic wastes deteriorates water quality and limits the amount of usable water, compounding the challenges of water scarcity.

QWhat is rainwater harvesting?

Rainwater harvesting is a method to capture and store rainwater for various uses, helping recharge groundwater and conserve water resources.

QWhat are the challenges in groundwater management?

Challenges in groundwater management include over-extraction leading to depletion, pollution from agricultural practices, and lack of effective regulatory measures.

QWhat is the significance of the Ganga and its tributaries?

The Ganga and its tributaries are major sources of surface water in India, supporting agriculture, providing drinking water, and sustaining biodiversity.

QWhy is the water demand projected to increase in the future?

The increase in water demand is driven by population growth, urbanization, industrialization, and changing lifestyles, all necessitating better water management.

QHow do climatic conditions affect water resources?

Climatic conditions, especially seasonal rainfall patterns, significantly influence water availability; areas with variable rainfall struggle more with droughts.

QWhat percentage of the world's water resources does India have?

India accounts for about 4% of the world's water resources while having over 17% of the global population.

QWhat are the consequences of over-extraction of groundwater?

Over-extraction of groundwater results in declining water tables, increased salinity, and degradation of water quality, threatening agriculture and drinking water supplies.

QHow can communities participate in watershed management?

Communities can participate in watershed management through local initiatives, volunteering for water conservation practices, and engaging in decision-making processes.

QWhat is the impact of population growth on water resources?

Population growth exacerbates water scarcity as more people demand limited water resources, increasing competition and potential conflicts over water.

QHow can pollution in rivers be managed?

Pollution in rivers can be managed through stricter regulations, public awareness campaigns, and investment in wastewater treatment and pollution control technologies.

QWhat technologies can improve water use efficiency?

Technologies that improve water use efficiency include drip irrigation, rainwater harvesting systems, and water recycling techniques, which can significantly reduce waste.

QWhat are some traditional methods of water conservation?

Traditional methods of water conservation include rainwater storage systems, such as Kunds in Rajasthan and the establishment of check dams for recharge.

QWhat is the effect of contaminants in groundwater?

Contaminants in groundwater, such as heavy metals and nitrates, pose significant health risks and reduce the quality of water available for consumption.

QHow does the government address water scarcity?

The government addresses water scarcity through national policies, promoting conservation methods, and enhancing irrigation infrastructure to ensure sustainable water use.

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Water Resources PDF Downloads

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Water Resources Official Textbook PDF

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Water Resources Revision Guide

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Water Resources Practice Worksheet

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Water Resources Mastery Worksheet

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Water Resources Flashcards

Revise key terms and definitions from Water Resources with interactive flashcards. Quick recall practice for CBSE Class 12 Geography.

These flash cards cover important concepts from Water Resources in India - People and Economy for Class 12 (Geography).

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Definition of Water Scarcity

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Water scarcity refers to the lack of sufficient available water resources to meet the demands of water usage within a region.

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Percentage of Earth's Water that is Freshwater

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Only about 3% of Earth's total water is freshwater, of which a very small portion is accessible for human use.

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Total Water Available from Precipitation in India

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India receives about 4,000 cubic km of water from precipitation annually.

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Four Major Sources of Surface Water

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The four major sources of surface water in India are rivers, lakes, ponds, and tanks.

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Percentage of Water Utilization in Agriculture

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Agriculture accounts for 89% of surface water and 92% of groundwater utilization in India.

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Main Purpose of Irrigation

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Irrigation is primarily used to ensure adequate water supply for crops, particularly in regions with variable rainfall.

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Key Objective of PMKSY

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The Pradhan Mantri Krishi Sinchayee Yojana aims to provide protective irrigation to all agricultural farms in India.

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Importance of Watershed Management

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Watershed management involves conserving and efficiently using surface and groundwater resources to prevent runoff and recharge aquifers.

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What is Rainwater Harvesting?

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Rainwater harvesting is the practice of collecting and storing rainwater for various uses, including irrigation and recharging groundwater.

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Impact of Overuse of Groundwater

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Overuse of groundwater can lead to depletion of the groundwater table and increase in salinity in the soil.

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Common Sources of Water Pollution

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Main sources of water pollution include agricultural runoff, domestic sewage, and industrial effluents.

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Salinity Increase Areas in India

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Intensive irrigation in Punjab, Haryana, and western Uttar Pradesh contributes to soil salinity increase.

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Method to Improve Water Availability

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Recycling and reusing water, such as reclaimed wastewater for industrial use, can significantly improve water availability.

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Legislative Acts for Water Pollution Control

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The Water (Prevention and Control of Pollution) Act 1974 and the Environment Protection Act 1986 address water pollution in India.

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What is Atal Bhujal Yojana?

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Atal Bhujal Yojana aims to manage groundwater resources through community participation in water conservation practices.

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Effects of Climate Change on Water Resources

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Climate change affects water availability, necessitating adaptation strategies for effective water resource management.

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Types of Rainwater Harvesting Structures

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In Rajasthan, traditional rainwater harvesting structures include Kund or Tanka (covered underground tanks) to store rainwater.

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Community's Role in Watershed Projects

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Successful watershed projects often depend on active community participation for conservation and resource management.

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Polluted Rivers in India

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The Yamuna is noted as the most polluted river in India, along with others like the Sabarmati and Ganga.

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Salient Features of National Water Policy 2012

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The National Water Policy emphasizes the need for a national water framework law and community participation in water management.

Practice Water Resources with Interactive Duels

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