while it is important to protect the origin of rivers, and it is also essential important for the maintenance of city lakes. Apart from the unbridled development, discharge of affluents like industrial and sewerage waste have further polluted the city water bodies. this happens due to the negligence of the government and governing water bodies. from: http://www.dnaindia.com/bangalore/report_students-show-concern-over-death-of-lakes-and-loss-of-green-cover-in-karnataka_1485871