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Lakes and their Condition in India

Posted on : 28 Dec 2019

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  • In India, natural lakes (relatively few) mostly lie in the Himalayan region, the floodplains of Indus, Ganga, and Brahmaputra.
  • In the semi-arid and arid regions of western and peninsular India, tens of thousands of water bodies have been constructed over millennia.
  • Lake ‘Sudarshan’ in Gujarat’s Girnar area was perhaps the oldest man-made lake in India, dating back to 300 BC.
  • Lakes are also classified on the basis of their water chemistry. Based on the levels of salinity, they are known as Freshwater, Brackish or Saline lakes (similar to that of classification of aquatic ecosystem).
  • On the basis of their nutrient content, they are categorized as Oligotrophic (very low nutrients), Mesotrophic (moderate nutrients) and Eutrophic (highly nutrient rich).
  • Vast majority of lakes in India are either eutrophic or mesotrophic because of the nutrients derived from their surroundings or organic wastes entering them.

Article Related Questions

  1. Consider the following statements regarding lakes in India
    1.Natural lakes mostly lie in the Himalayan region and the floodplains of Himalayan rivers.
    2.The majority of lakes in India are Oligotrophic.
    Which of the above statement is/are correct?

  2. 1.1 only

    2.2 only

    3.Both 1 and 2

    4.Neither 1 nor 2

    Right Ans : 1 only

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