Ulsoor Lake in Bangalore
Ulsoor, originally named “Halsur” or “Alasur”, is currently the biggest lake in the Bangalore city. It is also one of the oldest neighborhoods in Bangalore located in the center of the city in “Halasuru” nearing the MG Road. It spreads over 125 acres area having several islands which make it a major tourist attraction. There is a boat club provided in the lake where tourists can enjoy boat ride and fun at islands nearby. These boats organized by KSTDC are open for tourists on all days of the week even on Sundays. For those who want to enjoy a boat ride, the pedal and row boats are available at a rent of 120/- per hour. The boats can also be availed on government holidays between 9:30 to 5: 30 pm.
History dates the creation of this lake to the Kempe Gowdas time while the present lake has been created by the then commissioner of the city Sir Lewin Bentham Bowring. Tourists can also enjoy boat training which has been provided to them by Madras Engineering Group. Ulsoor is the venue for Bangalore city to celebrate the Ganesha festival that takes place every year in August/September.
There is a park which is attached to the lake providing the visitors with lot of shades and greenery which is enjoyed most by the children visiting the place. A gurdwara located nearby is considered as the largest Sikh shrine in the city. There is a famous temple near the lake which can be visited by tourists and is dedicated to the Subbaraya. A recreational complex situated nearby can be used by the tourists to relax them and enjoy sports like swimming. As per surveys, this lake is subject to several kinds of pollution threats about which many articles have been published in various newspapers, magazines and other sources.
Restoration of Ulsoor Lake
Findings of the study showed that the DO at daytime was very high varied between 0.2 to 4.5 mg/L. The saprobic nature of the water in lake was reported less than one by the P/R ration. Further studies confirmed the Eutrophication of the lake that indicated the level of nitrogen, phosphate and chlorophyll to be high. Blue Green Algae known as microcystis was reported from the surface to bottom of the lake. Also, the presence of zinc, Cd, Cr, Pb and Cu was found to be very high in the sludge samples while the depth sludge was recorded as 1.55 m. All these studies confirmed that lake water required urgent remedial actions like:
- Elimination of contaminants by desalting the lake.
- Using suitable fencing to stop encroachment of the lake.
- Allow only storm water in the lake.
- Plastic bags should not be drained in to the lake.
- Close the sewage and manholes at identified locations.
- Army units should not push effluents from the cowdung wash, cattle house wash and army mess wash.
- Biogas plant must be installed.
- Treat the water from slum before draining into lake.
- Submergence of idols into water during festive season should be prohibited.
- Cultivate and harvest fishes and aquatic plants in order to deplete the content of phosphate and nitrogen.