ISSN 2348-1218 (print) International Journal of Interdisciplinary Research and Innovations ISSN 2348-1226 (online) Vol. 8, Issue 3, pp: (6-14), Month: July - September 2020, Available at: www.researchpublish.com
Comparative Water Quality Assessment of Bellandur Lake, Bangalore City, Karnataka Year 2013 and 2017 Zmarai Niazi1, Malik Khan Ayar2 1,2
Lecturer of Environmental Science Department Faculty of Natural Science Shaheed Professor Burhanuddin Rabbani Education University, Kabul, Afghanistan zmarainiazi11@gmail.com, malikkhanayar@gmail.com
Abstract: The lakes and reservoirs, all over India without exception, are in environmental degradation, might be due to encroachments, eutrophication (from domestic and industrial effluents) and silt. There has been a quantum jump in population during the last century without corresponding expansion of civic facilities resulting in lakes and reservoirs, especially the urban ones, becoming sinks for contaminants. The large density of human population in metropolitan cities like Bangalore, affects the environmental conditions of the city. The wetlands in Bangalore city are now dying, the effect of urbanization has taken some heavy toll on the lakes of Bangalore. and as result, in the heart of the city only 17 good lakes exist as against of 51 healthy lakes in 1985. The remaining lakes of the Bangalore city are facing extinction due to pollution. One such highly polluted lake is ‘Bellandur Lake’. It is located at latitude of 12°58’ N and longitude of 77°35’ E at an elevation of 921 m above the sea level. about 20 km towards the south-east of Bangalore city. A comparative study/work carried out between two years (2013 and 2017) analyzed data with reference to water quality status of Bellandur Lake as per recent years’ research papers and analyzed data to generate sufficient comparison. The result showed that the Lake is Polluted and as per CPCB water Quality classification Bellandur Lake comes in class E category and water used for Irrigation, Industrial cooling and Controlled Waste disposal. Keywords: Bellandur Lake, Water Quality, Physico-chemical Parameters, Comparison of Lakes.
I. INTRODUCTION Bangalore district is situated in the heart of the South- Deccan plateau of peninsular India to the South-Eastern corner of Karnataka State of India. between the latitudinal parallels of 12°39'N and 13°18'N and longitudinal meridians of 77°22'E and 77°52'E at an average elevation of about 920 m covering an area of land about 2,174 km2 (Bangalore rural and urban districts) (Ravikumar, et al., 2013). Its population is over 13 million and making it a megacity and the third most popular city and fifth populous urban in India. According to recent survey, conducted by the global HR consultancy Mercer, Bangalore was voted the most livable city in India, beating Mumbai, Chennai, New Delhi and Kolkata. In terms of cleanliness, Bangalore ranks 12th in India. In the 16th century, Kempe Gowda, constructed many lakes meet the town's water requirements, there is no perennial source of water supply to Bangalore city. In the half of 20th century, the Nandi Hills water works was commissioned by Sir Mirza Ismail (Diwan of Mysore, 1926–41 to provide a water supply to the city). Currently, the River Kaveri provides around 80% of the total water supply to the city with the remaining 20% being obtained from the Thippagondanahalli and Hesaraghatta reservoirs of the Arkavathi River. Bangalore receives 800 million liters of water a day, more than any other Indian city. (Rajshekhar Rao, et al., 2009, Chandrashekar, et al., 2012, and Fathima and Rajesh Gopinath 2012). Climate of Bangalore varies, Winter temperature is 12 °C and summer temperature exceed 34–35 °C. Bangalore receives rainfall from both the northeast and the southwest monsoons and the wettest months are August, September and October. The mean value of rainfall is about 973 mm (Ramesh and Krishnaiah, 2013).
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