Water Resources and Scarcity Quiz

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Questions and Answers

What was one significant problem faced by big dams during excessive rainfall?

  • They provided sufficient irrigation.
  • They improved water quality.
  • They effectively controlled floods.
  • They caused soil erosion. (correct)

The Krishna-Godavari dispute involves Karnataka and Andhra Pradesh's objections to water diversion by the Maharashtra government.

True (A)

What natural substance is the flood plains deprived of due to sedimentation?

silt

The floods in Maharashtra and Gujarat in 2006 were aggravated by the release of water from _____ during heavy rains.

<p>dams</p> Signup and view all the answers

Match the following consequences with their descriptions:

<p>Soil erosion = Destruction of land surface due to water flow Earthquakes = Induced seismic activity due to water storage Water-borne diseases = Illnesses spread through contaminated water Pollution = Degradation of water quality due to excessive usage</p> Signup and view all the answers

What are the primary purposes of dams in modern times?

<p>Irrigation, electricity generation, and flood control (C)</p> Signup and view all the answers

The Bhakra - Nangal project only serves the purpose of electricity generation.

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

Who constructed the tank in Hauz Khas, Delhi in the 14th Century?

<p>Iltutmish</p> Signup and view all the answers

Dams are now often referred to as __________ projects due to their multiple functions.

<p>multi-purpose</p> Signup and view all the answers

Match the following dam types with their characteristics:

<p>Timber dams = Constructed using wooden materials Embankment dams = Built from earth and rock materials Masonry dams = Made using stone or concrete Spillway = Manages the overflow of water from a dam</p> Signup and view all the answers

What does a spillway do at a dam?

<p>It controls water overflow (D)</p> Signup and view all the answers

The Hirakud Dam integrates __________ with flood control.

<p>water conservation</p> Signup and view all the answers

Dams can be classified by height, structure, and intended purpose.

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

Which river is associated with the Salal Project?

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

The Sardar Sarovar Dam is located on the Krishna River.

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

Name one major river the Mettur project is associated with.

<p>Kaveri</p> Signup and view all the answers

The Narmada Bachao Andolan primarily focuses on the issues related to the Sardar Sarovar Dam on the ______ river.

<p>Narmada</p> Signup and view all the answers

What was one reason for objections to major river projects?

<p>They caused unexpected floods. (C)</p> Signup and view all the answers

Match the river projects with their respective rivers:

<p>Bhakra Nangal = Sutlej Tehri = Ganga Koyna = Krishna Hirakud = Mahanadi</p> Signup and view all the answers

The Pravara project is built on the Godavari River.

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

Which organization mobilized people against the Sardar Sarovar Dam?

<p>Narmada Bachao Andolan</p> Signup and view all the answers

Match the dams with their respective rivers:

<p>Tehri = Ganga Koyna = Krishna Mettur = Kaveri Narora = Ganga Gandhi Sagar = Chambal</p> Signup and view all the answers

Which of the following rainwater harvesting techniques is commonly practiced in Rajasthan?

<p>Rooftop rainwater harvesting (A)</p> Signup and view all the answers

In ancient India, water harvesting systems were not adapted to local ecological conditions.

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

In arid and semi-arid regions, agricultural fields were converted into __________ structures that allowed water to stand.

<p>rain fed storage</p> Signup and view all the answers

Name one technique used in hill and mountainous regions to harvest rainwater.

<p>Guls or Kuls</p> Signup and view all the answers

Which dam is associated with the Chambal River?

<p>Gandhi Sagar (D)</p> Signup and view all the answers

People in Bikaner traditionally had underground tanks for storing water.

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

The __________ channel technique was developed in the flood plains of Bengal to irrigate fields.

<p>inundation</p> Signup and view all the answers

What caused a decline in rooftop rainwater harvesting in western Rajasthan?

<p>Perennial Indira Gandhi Canal (C)</p> Signup and view all the answers

Rooftop rainwater harvesting was common in the towns and villages of the Thar region.

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

What is a tanka in the context of rainwater harvesting?

<p>A circular hole in the ground used to store rainwater.</p> Signup and view all the answers

In the village of Gendathur, villagers installed a rooftop rainwater harvesting system to meet their __________ needs.

<p>water</p> Signup and view all the answers

Why do some houses in western Rajasthan still maintain tankas?

<p>Dislike of tap water taste (A)</p> Signup and view all the answers

Match the following locations with their relevance to rainwater harvesting:

<p>Western Rajasthan = Decline in rooftop harvesting Gendathur = Adaptation of harvesting systems Thar region = Common practice of harvesting Tamil Nadu = First state with harvesting systems</p> Signup and view all the answers

Rainwater harvesting methods have not been adapted successfully in urban India.

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

What is the purpose of rooftop rainwater harvesting?

<p>To store and conserve rainwater for domestic use.</p> Signup and view all the answers

What is the annual precipitation received by Gendathur?

<p>1,000 mm (D)</p> Signup and view all the answers

Meghalaya has a system of rainwater harvesting that uses plastic pipes.

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

How much water can each house in Gendathur collect and use annually?

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

Gendathur has installed a __________ system for rainwater harvesting.

<p>compulsory</p> Signup and view all the answers

From how many houses does Gendathur harvest a net amount of rainwater annually?

<p>20 houses (B)</p> Signup and view all the answers

The bamboo pipe system in Meghalaya allows for immediate access to water.

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

What is the primary method of water harvesting used in Khasi Hills, Meghalaya?

<p>Bamboo drip irrigation</p> Signup and view all the answers

About _____ litres of water enters the bamboo pipe system every minute in Meghalaya.

<p>18-20</p> Signup and view all the answers

What is a disadvantage of multi-purpose projects mentioned in the content?

<p>Sedimentation of river bottom (A)</p> Signup and view all the answers

Khadin is a traditional method of water harvesting.

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

What distinguishes Gendathur regarding rainwater?

<p>Rich in rainwater</p> Signup and view all the answers

Match the following water structures with their features:

<p>Dam = Hydraulic structure for water storage Tankas = Traditional water storage system Bamboo drip irrigation = Transporting water using bamboo pipes Khadin = Floodplain farming system</p> Signup and view all the answers

In Gendathur, the collection efficiency of the rainwater harvesting system is __________.

<p>80 percent</p> Signup and view all the answers

What benefit does multi-purpose project provide besides irrigation?

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

Flashcards

Dams and Floods

The release of water from dams during heavy rainfall can worsen flood conditions.

Flood Impact on Soil

Floods cause soil erosion, which depletes floodplains of natural fertilizer (silt), leading to land degradation.

Negative Impacts of Water Projects

Large-scale water projects can lead to earthquakes, waterborne diseases, and pollution.

Krishna-Godavari Dispute

The Krishna-Godavari dispute arose from objections by Karnataka and Andhra Pradesh regarding Maharashtra diverting water for a multipurpose project.

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Rehabilitation of Displaced People

The government aims to provide rehabilitation facilities for displaced people, especially those living in poverty.

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Salal Project

The Salal Project, a hydroelectric power project, is situated on the Chenab River.

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Bhakra Nangal Dam

The Bhakra Nangal Dam, one of the largest in India, is located on the Sutlej River.

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Tehri Dam

The Tehri Dam is constructed on the Bhagirathi River, a tributary of the Ganga River, for hydroelectric power generation.

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Narora Atomic Power Station

The Narora Atomic Power Station, located on the Ganga River, utilizes nuclear energy for power generation.

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Gandhi Sagar Dam

The Gandhi Sagar Dam, significant for irrigation and power generation, is located on the Chambal River.

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Rana Pratap Sagar Dam

The Rana Pratap Sagar Dam, another major dam project, is also situated on the Chambal River.

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Sardar Sarovar Dam

The Sardar Sarovar Dam, a controversial project, is constructed on the Narmada River.

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Narmada Bachao Andolan

The Narmada Bachao Andolan, also known as the Save Narmada Movement, is dedicated to opposing the Sardar Sarovar Dam project.

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What is a dam?

A structure built across a flowing water body to control and store water.

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What are the uses of a Dam?

Dams can be used for multiple purposes, such as irrigation, electricity generation, flood control, drinking water, and more.

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Why are dams important for water management?

Dams are vital for managing and conserving water resources, ensuring water availability for various needs.

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How are dams classified?

Dams are classified by their structure, primarily as timber dams, embankment dams, and masonry dams.

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What are the categories of dams based on height?

Dams can be categorized based on their height, with categories like low dams, medium-height dams, and high dams.

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What is a multi-purpose project?

A system where many uses of water are combined in a single project, such as for irrigation and hydropower generation.

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Give an example of a multi-purpose project in India.

The Bhakra-Nangal project in the Sutlej-Beas River basin is an example of a multi-purpose project, providing both irrigation and hydropower.

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What does the Hirakud project in the Mahanadi basin demonstrate?

The Hirakud project in the Mahanadi basin integrates water conservation with flood control.

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Rainwater harvesting

A system of collecting and storing rainwater for various uses like drinking, irrigation, and groundwater recharge.

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Guls or Kuls

A traditional water harvesting technique used in hilly regions of the Western Himalayas. This system utilizes diversion channels to direct rainwater towards agricultural fields.

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Rooftop rainwater harvesting

A technique commonly employed in Rajasthan to collect rainwater from rooftops and store it in underground tanks or tankas for drinking water.

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Inundation channels

Channels built in the floodplains of Bengal to direct floodwater for irrigation purposes. This method takes advantage of seasonal flooding.

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Khadins and Johads

Rain-fed storage structures used in arid and semi-arid regions. These structures convert agricultural fields into reservoirs to store water and moisten the soil.

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Koyna dam

A hydroelectric dam located near Pune, Maharashtra, India. It utilizes the Koyna river for power generation.

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Mettur Dam

A hydroelectric dam in the Indian state of Tamil Nadu. It draws water from the Kaveri river for power generation.

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Rooftop Rainwater Harvesting in Rajasthan

A traditional rainwater harvesting method common in western Rajasthan, using sloping rooftops to collect rainwater and direct it into an underground storage tank called a tanka.

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Tanka

A circular underground pit or tank used to store rainwater collected from rooftops in traditional Rajasthan architecture.

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Indira Gandhi Canal

An irrigation canal in western India, providing water to arid areas, which has led to a decline in rooftop rainwater harvesting in some places.

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Impact of the Indira Gandhi Canal on Rainwater Harvesting

The effect of the Indira Gandhi Canal on rainwater harvesting, where people are less reliant on collecting water from their roofs due to readily available water.

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Modern adaptations of traditional Rainwater Harvesting

A modern adaptation of traditional rainwater harvesting, combining traditional methods with modern technology to conserve water efficiently in rural and urban areas.

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Gendathur, Karnataka

An example of a village in Karnataka, India, where villagers have successfully implemented rooftop rainwater harvesting systems to meet their water needs.

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Tamil Nadu and Rooftop Rainwater Harvesting

The state in India that is a pioneer in promoting rooftop rainwater harvesting, proving its effectiveness and leading the way in water conservation.

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Annual Precipitation

The amount of precipitation that falls in a specific area during a year.

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Collection Efficiency

The percentage of rainwater that is successfully collected and stored.

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Bamboo Drip Irrigation

A traditional method of harvesting rainwater in Meghalaya, India. It utilizes bamboo pipes to transport water from streams and springs.

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Traditional Method of Water Harvesting

A technique for collecting and storing rainwater, often utilized for irrigation and other domestic purposes. This method involves building structures like rooftop tanks and underground tanks.

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Water Resource Management

A water resource management strategy aimed at conserving water by tapping into existing sources like streams and springs.

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Meghalaya

A state in Northeast India known for its traditional water harvesting systems, particularly bamboo drip irrigation.

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Hydraulic Structures

Structures designed to store water, often built to collect rainwater or divert water from rivers.

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Stone Rubble Hydraulic Structure

A type of hydraulic structure that utilizes a stone rubble construction to create a dam or reservoir.

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Dam and Reservoir

A method of storing water by building a dam across a river, creating a reservoir.

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Multi-Purpose Project

A water management project that serves multiple purposes, such as providing irrigation, navigation, hydropower, and flood control.

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Water Resource Management in India

A system of managing water resources that includes traditional methods like rainwater harvesting and bamboo drip irrigation, as well as modern approaches like dams and reservoirs.

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Water Scarcity

A problem arising when there is not enough water to meet the needs of a population.

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Qualitative Water Scarcity

The lack of access to safe and clean water, leading to health issues and difficulties in daily life.

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Quantitative Water Scarcity

A situation where the total volume of water available is insufficient for a population's needs.

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Study Notes

Water Resources

  • Water is essential for life on Earth
  • Freshwater is obtained from precipitation, surface runoff, and groundwater
  • Water is continuously renewed through the hydrological cycle, making it a renewable resource
  • Despite this, water scarcity is a global issue, predicted to affect nearly two billion people by 2025
  • Water scarcity is often linked to low rainfall or drought-prone regions, but unequal access and over-exploitation are equally important factors

Water Scarcity and Conservation

  • Water scarcity is caused by variations in rainfall, over-exploitation of water resources, and unequal access to water amongst different social groups
  • Regions like Rajasthan, with their low rainfall, are often associated with water scarcity; however, the issue is widespread
  • Increased population and the demands of agriculture and industry exacerbate water scarcity issues

Multi-Purpose River Projects

  • Dams, reservoirs, and irrigation channels have been used for managing water resources for centuries
  • Multi-purpose projects aim to provide multiple uses (e.g., irrigation, electricity generation, flood control) from a single river system
  • Modern multi-purpose projects have come under scrutiny for their impact on the environment, displacement of communities (due to land acquisition), and disruption of ecosystems

Traditional Rainwater Harvesting

  • Ancient civilizations developed effective water harvesting techniques tailored to local ecological conditions
  • Rooftop harvesting, using tanks or cisterns, was and still is a widespread practice, especially in arid and semi-arid regions
  • Traditional techniques often involved creating collection surfaces (like 'kuls' or diversion channels) to collect rainwater and direct it to storage basins

Modern Adaptations of Rainwater Harvesting

  • Modern adaptations of rainwater harvesting techniques include using modern materials and methods to collect and store rainwater
  • Initiatives like the rooftop rainwater harvesting programs in Tamil Nadu showcase successful modernization efforts to conserve water

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