Water Scarcity and Conservation
49 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary source of usable freshwater mentioned?

  • Desalination plants
  • Rainwater harvesting
  • Ocean water
  • Surface run off and groundwater (correct)

Which factor contributes significantly to varying water availability?

  • Population density
  • Industrial water usage
  • Aquifer depletion
  • Rainfall patterns (correct)

What is one of the main causes of water scarcity in regions with adequate water resources?

  • Drought-resistant crops
  • Low population growth
  • Excessive rainfall
  • Inequality in water access (correct)

Which agricultural practice is identified as the largest consumer of water?

<p>Irrigated agriculture (B)</p> Signup and view all the answers

By 2025, what is the projected number of people living in absolute water scarcity?

<p>Two billion (A)</p> Signup and view all the answers

What is a primary reason for the over-exploitation of water resources?

<p>Increasing food production demands (B)</p> Signup and view all the answers

Which of the following regions is commonly associated with water scarcity due to low rainfall?

<p>Deserts of Rajasthan (B)</p> Signup and view all the answers

What approach is suggested to facilitate higher food-grain production sustainably?

<p>Developing drought-resistant crops and dry farming techniques (D)</p> Signup and view all the answers

What is a primary consequence of over-exploitation of groundwater resources?

<p>Falling groundwater levels (A)</p> Signup and view all the answers

Which of the following accurately describes the Jal Jeevan Mission (JJM)?

<p>It guarantees potable water supply to rural households. (A)</p> Signup and view all the answers

What multi-purpose function do modern dams serve beyond irrigation?

<p>Fish breeding and recreation (A)</p> Signup and view all the answers

What was a key historical achievement in hydraulic engineering in ancient India?

<p>Building sophisticated dam systems (D)</p> Signup and view all the answers

What significant problem does the increasing number of industries pose?

<p>Pressure on existing freshwater resources (C)</p> Signup and view all the answers

What is a critical aspect of the Atal Bhujal Yojana (Atal Jal)?

<p>Encouraging community behaviour change towards conservation (C)</p> Signup and view all the answers

How does pollution affect available water resources despite the quantity being adequate?

<p>Increases health risks for users (C)</p> Signup and view all the answers

In the context of multi-purpose river projects, what has changed since independence?

<p>Integration of various water uses (C)</p> Signup and view all the answers

What evidence has been found regarding irrigation techniques in ancient India?

<p>Creation of complex irrigation works in various regions (C)</p> Signup and view all the answers

What are modern urban colonies likely to rely on for water supply?

<p>Groundwater pumping devices (A)</p> Signup and view all the answers

Which approach is crucial for sustainable management of water resources?

<p>Conservation and smart water management (A)</p> Signup and view all the answers

What major environmental issue may arise from water mismanagement?

<p>Depletion of fragile water resources (C)</p> Signup and view all the answers

Which of the following reflects a consequence of industrialization in relation to water resources?

<p>Increased competition for freshwater supply (C)</p> Signup and view all the answers

What is the primary purpose of underground tanks or tankas in arid regions of Rajasthan?

<p>Storing drinking water (A)</p> Signup and view all the answers

Which method was primarily used in Meghalaya for rainwater harvesting?

<p>Roof runoff collection (D)</p> Signup and view all the answers

What is the relationship between the rainfall in Cherapunjee and water scarcity in Shillong?

<p>High rainfall doesn't translate to adequate water supply. (D)</p> Signup and view all the answers

What technique is used in the Western Himalayas for agriculture?

<p>Diversion channels like guls or kuls (C)</p> Signup and view all the answers

In Gendathur, how much rainwater can a single household collect annually with the rooftop harvesting system?

<p>50,000 litres (A)</p> Signup and view all the answers

What factor has contributed to the decline of rooftop rainwater harvesting in western Rajasthan?

<p>Availability of water from the Indira Gandhi Canal (B)</p> Signup and view all the answers

What substance is often filtered through sand and bricks in the rooftop harvesting systems?

<p>Rainwater (A)</p> Signup and view all the answers

In the context of traditional rainwater harvesting, what are khadins and johads used for?

<p>Storing rainwater and moistening the soil (A)</p> Signup and view all the answers

What is a characteristic feature of the bamboo drip irrigation system in Meghalaya?

<p>Delivers water through gravitational flow (D)</p> Signup and view all the answers

Which region is known for constructing underground rooms adjacent to tankas for cooling purposes?

<p>Phalodi (C)</p> Signup and view all the answers

What percentage of water requirements in Shillong is typically met through rooftop rainwater harvesting?

<p>15-25% (B)</p> Signup and view all the answers

What is a common misconception about areas receiving high rainfall?

<p>High rainfall ensures sufficient drinking water. (A)</p> Signup and view all the answers

What legal measure has Tamil Nadu implemented regarding rooftop rainwater harvesting?

<p>Compulsory installation for all houses (B)</p> Signup and view all the answers

Which technique does the roof runoff water need to undergo before reaching storage tanks?

<p>Filtration (B)</p> Signup and view all the answers

What is the primary environmental concern associated with dams as mentioned in the content?

<p>Dams can lead to rockier stream beds and poorer aquatic habitats. (D)</p> Signup and view all the answers

Which of the following statements about the Sardar Sarovar Dam is accurate?

<p>It will irrigate land in drought-prone areas across multiple states. (B)</p> Signup and view all the answers

What consequence of sedimentation in reservoirs is highlighted in the content?

<p>Submergence of existing vegetation leading to soil decomposition. (A)</p> Signup and view all the answers

Which term describes a structure intended for directing or obstructing water flow?

<p>Dam (C)</p> Signup and view all the answers

What is one of the major purposes of the Pradhan Mantri Krishi Sinchaee Yojana?

<p>To ensure access to protective irrigation for all farms. (B)</p> Signup and view all the answers

What is a significant drawback of large dams as mentioned in the passage?

<p>They can cause excessive soil salinisation. (C)</p> Signup and view all the answers

What is a defining characteristic of embankment dams?

<p>They are made from earth or rock materials. (A)</p> Signup and view all the answers

What ecological consequence can arise from the alteration of natural river flows due to dams?

<p>Fragmentation of river habitats affecting aquatic fauna. (D)</p> Signup and view all the answers

What is one aspect of the Krishna-Godavari dispute?

<p>Maharashtra is accused of over-diverting river water. (C)</p> Signup and view all the answers

Which of these types of dams uses masonry in its construction?

<p>Masonry dam (D)</p> Signup and view all the answers

What issue arises from the submergence of land for dam reservoirs?

<p>Loss of existing vegetation and soil quality. (A)</p> Signup and view all the answers

Which term refers to a water feature designed for various usages, including irrigation and hydroelectric power?

<p>Dam (A)</p> Signup and view all the answers

What traditional practice is mentioned as an alternative to multi-purpose dam projects?

<p>Rainwater harvesting (C)</p> Signup and view all the answers

What advantage does the Sardar Sarovar Dam provide to the surrounding regions?

<p>It guarantees a water supply for irrigation. (B)</p> Signup and view all the answers

Flashcards

Water Scarcity

A situation where the demand for water exceeds the available supply.

Water Availability Variation

Water resources are unevenly distributed across regions and time periods, varying due to rainfall patterns.

Over-exploitation of Water

Using water resources at a rate faster than they can be replenished.

Unequal Access to Water

Different social groups or communities have varying levels of access to water.

Signup and view all the flashcards

Water Scarcity Cause

Over-exploitation and unequal access to water resources are major causes of water scarcity.

Signup and view all the flashcards

Irrigated Agriculture Water Use

Irrigated agriculture is the largest consumer of water.

Signup and view all the flashcards

Water as Renewable Resource

Water continually circulates and replenishes through the hydrological cycle.

Signup and view all the flashcards

Water Scarcity Prediction

By 2025, it is predicted that two billion people will face extreme water scarcity.

Signup and view all the flashcards

What is water scarcity?

Water scarcity occurs when there isn't enough water to meet the demands of a population or ecosystem.

Signup and view all the flashcards

How does population affect water scarcity?

A growing population puts more strain on existing water sources, increasing the risk of scarcity.

Signup and view all the flashcards

How does industrialization impact water resources?

Industries consume large amounts of water and can pollute water sources, contributing to water scarcity.

Signup and view all the flashcards

What are multi-purpose projects?

Multi-purpose projects utilize dams to manage water for various uses like irrigation, electricity generation, and flood control.

Signup and view all the flashcards

How do dams help conserve water?

Dams store rainwater, ensuring water availability during dry periods and managing water for different uses.

Signup and view all the flashcards

What are the downsides of multi-purpose projects?

The construction of dams can have detrimental effects on ecosystems and displace communities.

Signup and view all the flashcards

What is the Jal Jeevan Mission (JJM)?

The JJM aims to provide clean drinking water to every rural household in India.

Signup and view all the flashcards

What is Atal Bhujal Yojana (Atal Jal)?

Atal Jal is a program promoting sustainable groundwater management and conservation in water-stressed regions of India.

Signup and view all the flashcards

How does Atal Jal aim to help?

Atal Jal aims to change attitudes towards water consumption and promote sustainable water management techniques.

Signup and view all the flashcards

How do ancient hydraulic structures show water management?

Ancient civilizations used sophisticated structures like dams and canals to manage water efficiently.

Signup and view all the flashcards

What is the importance of water quality?

Even with sufficient water, pollution from various sources can make water unsafe for human consumption.

Signup and view all the flashcards

What are some sources of water pollution?

Domestic waste, industrial waste, pesticides, and fertilizers used in agriculture can contaminate water.

Signup and view all the flashcards

How can we conserve water in our daily lives?

Simple actions like taking shorter showers, repairing leaks, and watering plants efficiently can conserve water.

Signup and view all the flashcards

Dam

A barrier built across a river to control water flow, often creating a reservoir or lake.

Signup and view all the flashcards

Spillway

A part of a dam designed to release excess water, preventing overflow and damage.

Signup and view all the flashcards

Embankment Dam

A dam built from earth and rock, usually with a core of clay to prevent leaks.

Signup and view all the flashcards

Masonry Dam

A dam built using stone or concrete, often with a strong foundation.

Signup and view all the flashcards

Multi-purpose Dam

A dam designed to serve multiple purposes, such as irrigation, power generation, and flood control.

Signup and view all the flashcards

Sedimentation

The process of particles settling at the bottom of a reservoir, leading to reduced water storage capacity and habitat changes.

Signup and view all the flashcards

Dam's Impact on River Flow

Dams disrupt natural river flow, affecting sediment transport, water quality, and aquatic life.

Signup and view all the flashcards

Inter-state Water Disputes

Conflicts between states over water rights, often arising from dam construction and water diversion.

Signup and view all the flashcards

Water Harvesting

Collecting and storing rainwater for later use, a traditional method for water management.

Signup and view all the flashcards

Pradhan Mantri Krishi Sinchaee Yojana

A government scheme aimed at improving irrigation infrastructure and promoting water conservation in agriculture.

Signup and view all the flashcards

Sardar Sarovar Dam

A large dam on the Narmada River, providing irrigation to several states but also facing environmental concerns.

Signup and view all the flashcards

Flood Control

Measures taken to prevent or mitigate the effects of flooding.

Signup and view all the flashcards

Ecological Consequence

The impact of human activities on the natural environment, often with unintended consequences.

Signup and view all the flashcards

Salinization

The buildup of salts in soil, decreasing its fertility and harming crops.

Signup and view all the flashcards

Irrigation's Impact on Cropping Pattern

Irrigation often leads to a shift towards water-intensive crops, affecting the agricultural landscape.

Signup and view all the flashcards

What is 'gul' or 'kul'?

A diversion channel built in the Western Himalayas to direct water for agriculture. This system is often used in hilly regions where there is a steep slope.

Signup and view all the flashcards

What is 'rooftop rainwater harvesting'?

Collecting and storing rainwater from rooftops, typically used for drinking water in areas like Rajasthan. This method helps manage water scarcity during dry seasons.

Signup and view all the flashcards

What is an 'inundation channel'?

A channel designed to flood agricultural fields with water, often used in flood plains like those in Bengal. This traditional method helps fertilize and irrigate fields during flood seasons.

Signup and view all the flashcards

What is a 'khadin' and a 'johad'?

'Khadins' in Jaisalmer and 'Johads' in other parts of Rajasthan are traditional water storage systems built in agricultural fields. They allow water to collect, moisten the soil, and support agriculture in arid and semi-arid regions.

Signup and view all the flashcards

What is a 'tanka'?

A traditional underground tank used for storing drinking water in arid regions like western Rajasthan. These tanks can be quite large and are filled with rainwater harvested from rooftops.

Signup and view all the flashcards

How are tankas connected to rooftops?

Tankas were connected to the sloped roofs of houses through a pipe. Rainwater flowing down the pipe from roofs was collected in these underground tanks.

Signup and view all the flashcards

How is rainwater used for cooling?

In western Rajasthan, houses often built underground rooms connected to tankas to beat the summer heat. The tankas would keep these rooms cool as water has a cooling effect.

Signup and view all the flashcards

What is a 'kul'?

A traditional water management system in the Himalayas used to guide water from a spring or stream to agricultural land. Often leads to a circular village tank.

Signup and view all the flashcards

What is the importance of 'palar pani'?

'Palar pani' is a traditional term for rainwater and is considered the purest form of natural water in Rajasthan. It is a valuable resource, especially during dry seasons.

Signup and view all the flashcards

How is rooftop rainwater harvesting viewed in Tamil Nadu?

Tamil Nadu has made rooftop rainwater harvesting mandatory for all houses, with legal consequences for individuals who fail to comply. This highlights the importance of water conservation in the state.

Signup and view all the flashcards

What is the paradox in Shillong, Meghalaya?

Shillong, the capital of Meghalaya, faces water shortages even though the nearby areas of Cherapunjee and Mawsynram receive the highest rainfall in the world. This highlights the need for efficient water management practices.

Signup and view all the flashcards

What is the contribution of rooftop rainwater harvesting in Shillong?

Rooftop rainwater harvesting is a common practice in Shillong, contributing to nearly 15-25% of the total water requirement for many households. This reflects the importance of this method in providing a reliable water source.

Signup and view all the flashcards

What is the impact of the Indira Gandhi Canal in western Rajasthan?

The Indira Gandhi Canal has brought ample water to western Rajasthan, leading to a decline in the practice of rooftop rainwater harvesting. This is because it has provided an alternative water source.

Signup and view all the flashcards

How does the Gendathur village illustrate water conservation?

The Gendathur village in Mysuru, Karnataka, has successfully implemented rooftop rainwater harvesting systems in many households. This has made the village water-rich, showcasing the potential of effective water conservation practices.

Signup and view all the flashcards

What are the benefits of using bamboo drip irrigation?

Meghalaya utilizes a 200-year-old bamboo drip irrigation system, which efficiently transports water from streams or springs to plants. This system minimizes water usage, ensuring water reaches the roots effectively.

Signup and view all the flashcards

What is the concept of 'collection efficiency'?

'Collection efficiency' refers to the percentage of rainwater that is actually captured and stored using a harvesting system. It is an important factor in assessing the effectiveness of water conservation efforts.

Signup and view all the flashcards

Study Notes

Water Scarcity and Conservation

  • Three-fourths of Earth's surface is water, but usable freshwater is a small proportion, primarily from surface runoff and replenished groundwater.
  • The hydrological cycle ensures water is renewable.
  • Despite water's renewability, many regions face scarcity due to over-exploitation, high demand, and unequal access.
  • Water scarcity is not limited to regions with low rainfall; it can also occur in areas with ample resources due to population growth, poor water quality, and/or unequal access.
  • Growing populations, intensifying industries, and urban lifestyles drive increased water consumption and strain existing resources.
  • Agriculture is the largest water consumer, with irrigated farming over-exploiting groundwater.
  • Developing drought-resistant crops and dry farming methods is crucial to revolutionize agriculture.
  • Industries' growing demand for water and energy exacerbates the problem further.

Multi-Purpose River Projects

  • Traditional hydraulic structures like dams, reservoirs, embankments, and canals are crucial for water management.
  • Modern dams have evolved into multi-purpose projects that integrate irrigation, electricity generation, water supply, flood control, recreation, and navigation.
  • Multi-purpose projects, despite their intention, have faced criticisms:
    • Impact on river's natural flow and sediment load.
    • Fragmentation impacting fish migration and aquatic life.
    • Reservoir creation leads to vegetation and soil decomposition.
    • Shifting to water-intensive commercial crops exacerbates soil issues (e.g., salinization).
    • Flood control issues due to reservoir sedimentation.
    • Environmental and health concerns are issues.

Rainwater Harvesting

  • Traditional methods of rainwater harvesting, like 'guls' and 'kuls' in the Himalayas or 'khadins' and 'johads' in Rajasthan, existed in ancient India.
  • Rooftop rainwater harvesting was (and is) common to store drinking water.
  • Underground tanks ('tankas') were prevalent in arid regions, providing reliable storage.
  • Many rural and urban areas have successfully adapted rainwater harvesting methods for water conservation.
  • Tamil Nadu made rooftop rainwater harvesting compulsory, incentivizing its practice.
  • Modern methods include using PVC pipes and filters for efficient collection.

Water Conservation Proposals

  • Implementing water conservation practices (e.g., rainwater harvesting, efficient irrigation techniques).
  • Promoting drought-resistant crops and dry farming.
  • Addressing unequal access to water.
  • Reducing water consumption in industries and households.
  • The Atal Bhujal Yojana aims to promote water conservation behavior in communities.

Inter-state Water Disputes

  • Water disputes, particularly over major river projects and their diversion, often occur between states, as seen in cases like the Krishna-Godavari dispute.

Pradhan Mantri Krishi Sinchaee Yojana (PMKSY)

  • Aims to improve irrigation and water access on farms, boost efficiency, and implement sustainable methods.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Description

Explore the critical issue of water scarcity and the various conservation strategies in place. This quiz delves into the reasons behind water scarcity, the importance of the hydrological cycle, and the impact of population growth and agriculture on freshwater resources. Test your knowledge on the challenges and solutions regarding water management.

More Like This

Water Scarcity and Management Quiz
9 questions
Water Resources and Scarcity Quiz
12 questions
Use Quizgecko on...
Browser
Browser