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A large section of India’s population suffers from water crisis or mismanagement of water resources.

A large section of India’s population suffers from water crisis or mismanagement of water resources. To begin with, there is not enough clean water for drinking or irrigation purposes in many parts of the country. On the other hands, flash floods are also frequent in many regions. As a means to remedy this persistent problems, human-made structure like dams and reservoirs have been constructed across streams and rivers. This article highlights the significant advantages of dams and also sheds light on the fundamental uses of dams and reservoirs. Read along to find out more!

A dam is a structure that is built on rivers, streams or estuary for conserving water. It directly helps to supply residents with adequate water for consumption, industrial and irrigation purposes. In a broad sense, modern dams are of 2 types – concrete dams and embankments. Concrete dams or masonry dams block streams which run through narrow gorges, whereas embankments control streams and rivers which flow through broad valleys. Example of Masonry Dam in India: Nagarjuna Sagar Dam, Andhra Pradesh Example of Embankment Dam in India: The Tehri Dam, Uttarakhand [Image: Rivers and Dams in India] Test Your Knowledge: Which is the largest dam in India?

There are several uses of dams. Some of the most common ones are as follows –

With that being said, let’s proceed to find out the associated merits and demerits of dams.

Dams offer an array of economic, social and environmental benefits and are useful for most problems pertaining to water conservation and its crisis management. On that note, let’s glance through the top advantages of dams –

Arguably, this is one of the primary uses of dams and reservoirs. The water stored in reservoirs helps to make up for water crises in dry seasons. It also ensures regular water supply for residential, industrial and agricultural consumption.

Undoubtedly, mitigating flood is a major importance of dams. Dams help to control the flow of floodwater by diverting its course towards other uses, storing the excess water or releasing it with caution. In turn, it helps to save lives and resulting displacement.

One of the most significant merits of dams is the role they play in irrigation. Dams have helped farmers tackle the problem of watering crops significantly, which has resulted in a boost in crop production.

Over the years, hydropower has emerged as an effective way of meeting the energy crisis in many regions of India. Also, being a clean source of energy, hydropower does not contribute to any kind of pollution. Tehri Dam, Srisailam Dam and Sardar Sarovar Dam are some of the top hydropower plants in India.

Besides mitigating flood, dams often prove useful in retaining detrimental sedimentation. In fact, they may also come in handy in preventing the disposition of hazardous material and subsequent contamination.

One of the benefits of dams is that they also provide recreational facilities to human beings. One can enjoy boating, skiing and fishing in the stagnant water. Maithon dam and Bhakra Nangal dam are popular among tourists as recreational hubs.

Irrespective of its array of benefits, dams have a significant share of disadvantages. The following offers a brief idea about it.

Ans.  Dams are built to store water, meet irrigation requirements and mitigate flood-oriented disasters. Dams also play a significant role in generating a clean source of energy through hydropower and help to meet the energy crisis.

Ans.  Dams regulate the flow of rivers and streams. They also come in handy for preventing flash floods in low-lying lands and valleys. Over the years, dams have emerged useful for generating hydro-electricity.

Ans.  These are the 5 largest dams in India –

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