Sources said that the river island of Majuli which lies on the other side faces a threat of being submerged by river waters of the Brahmaputra in case the embankment is breached. "Majuli, which has considerably decreased in size due to large scale erosion faces threat of extinction if flooding and erosion continue unabated,' the source added. "The Centre and State may be pumping crores into various anti-erosion projects in Majuli every year but all these are being literally washed away by the mighty Brahmaputra,' the source said.