Explain the case study of Kolleru lake. [4 Marks]
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Kolleru is the largest freshwater lake in India between West Godavari and Krishna districts. In 1999 Government of Andhra Pradesh declared it a bird sanctuary as it hosted 193 species of birds. It also inhabited a variety of flora and fauna.
[1 Mark]
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But the lake quality degraded due to water pollution. The size of the lake got reduced. The muddy ground in the lake resulted in flooding.
[0.5 Marks]
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Human activities like aquaculture, agricultural and industrial runout adversely affected the lake. As a result of which the water holding capacity of the lake was also reduced.
[1 Mark]
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The lake became more alkaline and turbid and the BOD of water increased.
[0.5 Marks]
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Several health issues were faced by the local inhabitants. Prawns and fish were also affected. Vector-borne diseases were also increased.
[1 Mark]
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Therefore, the Ministry of Environment and Finance formed a committee ‘Operation Kolleru’ to protect the lake. The objective of the committee is to bring the lake back to a pollution-free environment and to maintain ecological balance.
-
Kolleru is the largest freshwater lake in India between West Godavari and Krishna districts. In 1999 Government of Andhra Pradesh declared it a bird sanctuary as it hosted 193 species of birds. It also inhabited a variety of flora and fauna.
[1 Mark] -
But the lake quality degraded due to water pollution. The size of the lake got reduced. The muddy ground in the lake resulted in flooding.
[0.5 Marks] -
Human activities like aquaculture, agricultural and industrial runout adversely affected the lake. As a result of which the water holding capacity of the lake was also reduced.
[1 Mark] -
The lake became more alkaline and turbid and the BOD of water increased.
[0.5 Marks] -
Several health issues were faced by the local inhabitants. Prawns and fish were also affected. Vector-borne diseases were also increased.
[1 Mark] -
Therefore, the Ministry of Environment and Finance formed a committee ‘Operation Kolleru’ to protect the lake. The objective of the committee is to bring the lake back to a pollution-free environment and to maintain ecological balance.
