Links:
[1] http://admin.indiaenvironmentportal.org.in/news/kaldia-river-posing-serious-threat-helana
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/assam-tribune-guwahati
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/soil-erosion
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kaldiya
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-disasters
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/habitat-and-urbanisation