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Wetland Conservation

Kolleru Lake

Why in the News?

  • Kolleru Lake is gaining recognition for its black dried fish, now popular in domestic and international markets.

What is Black Dried Fish

  • A traditional sun dried fish product
  • Prepared by drying small freshwater or brackish water fish without heavy salting
  • Dark colour develops due to natural oxidation and fermentation during drying
  • Strong aroma and long shelf life

Location and Physical Features

  • One of the largest freshwater lakes in India
  • Located in Andhra Pradesh, near Eluru
  • Lies in the inter-deltaic plain of Krishna and Godavari
  • Acts as a natural flood-balancing reservoir for both rivers
  • Shallow lake in nature

Hydrology

  • Receives water from Budameru, Ramileru, Tammileru, Errakalva rivers
  • Also fed by 18 drains
  • Drains into the Bay of Bengal through Upputeru outlet

Ecological Importance

  • Known as Peerless Fisherman’s Paradise and Bird Heaven
  • Declared a Wildlife Sanctuary in November 1999
  • Designated a Ramsar Wetland in November 2002
  • Supports over 20 million migratory birds annually
  • Key species: Grey pelican, Painted stork, Open billed stork
  • Hosts migratory birds from Siberia, Central Asia, and the Himalayas

Socio-Economic Significance

  • Sustains livelihoods through fishing, duck farming, and paddy cultivation
  • Traditional black dried fish is a unique local product with growing market value

Prelims Pointers

  • Largest freshwater lake in Andhra Pradesh
  • Ramsar site and wildlife sanctuary
  • Flood moderation role for Krishna and Godavari
  • Internationally known for migratory birds and fisheries
Consider the following statements: (2023)

1. Jhelum River passes through Wular Lake. 

2. Krishna River directly feeds Kolleru Lake. 

3. Meandering of Gandak River formed Kanwar Lake. 

How many of the statements given above are correct? 

(a) Only one (b) Only two (c) All three (d) None

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