- Fresh water lake situated in the state of Andhra Pradesh.
- Kolleru is located between Krishna and Godavari Delta.
- It spans in two districts: Krishna and West Godavari.
- It receives water from two streams namely Budameru and Tamileru.
- It was designated as a Wetland in November, 2002 under Ramsar Convention.
- The lake is also called as Kolleru Wildlife Sanctuary.
- Kolleru lake is visited by migratory birds every year.
- Famous bird of Kolleru lake is Grey Pelican.
Drying of Kolleru Lake
- Kolleru is one of the largest freshwater lake of India.
- Water of the lake is drying very rapidly.
- People living in Krishna and West Godavari districts and Islands facing severe water crisis.
- At many places ground water has become saline.
- Due to lack of water fishing has declined.
- Lake has become so shallow that even boating has become difficult.
- It is located in the Buldhana district of Maharashtra, India.
- The lake is also called as Lonar Crater, since it was formed due to the meteorite impact around 50, 000 years ago.
- It is a National Geo-Heritage monument.
- Water is saline with PH value: 10.5.
- The circumference of the lake is around 4.8 Km.
- The lake water contains salt and soda.
Why Lonar lake was in the news ?
- The natural colour of Lonar lake is emerald green.
- In June, 2020 the colour of the water turned pink.
- Normally, the green colour of Lonar lake is the result of the presence of algae.
Possible reasons for the change in colour?
- Increase in salinity
- Low water level.
- Reduction in the influx of waste due to the lockdown.
- Reduction of oxygen level in the water.
- Presence of certain bacteria and fungus.
- Adaptation of algae to the changes mentioned above.