Nearly 40% of the state's total land has been declared as flood-prone by the government
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/assam-loses-rs-200-cr-annually-due-floods-economic-survey
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/assam
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/floods
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/soil-erosion
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/economy
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/land
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-disasters