|Krishna delta lost 1,783 ha between 1977 and 2000|
A report by the International Water Management Institute says similar trends were observed in the Krishna basin which lost 1,783 ha between 1977 and 2000 (see map). The report also hints at more such reductions after the construction of the Polavaram and Inchampalli dams on the Godavari river is over.
Environmentalists in India have been demanding a certain minimum flow, called environmental flow, to sustain downstream ecology while planning for diversion of river water."This is a fallout of not considering environmental water demand while planning for diversion of water. Rivers have a rich marine life. It is important to factor in the environmental water needs and maintain a certain flow to sustain fresh water and marine life downstream,' says Parikshit Gautam of wwf India. "We cannot treat river and marine ecosystems separately. Estuaries provide the breeding ground for a number of marine and fresh water species,' he adds.