The strategy of building embankments to constrain river flow and to prevent floods in north Bihar has proven to be questionable and flawed. Reliance on a dam-and-reservoir system for that purpose only offers limited protection and even greater risks of flooding in case of damage.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/floods-himalayan-rivers-nepal-some-heresies
[2] http://admin.indiaenvironmentportal.org.in/category/author/ramaswamy-r-iyer
[3] http://admin.indiaenvironmentportal.org.in/category/journal/economic-and-political-weekly
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/himalaya
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rivers
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gandak
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kosi
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dams
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sedimentation
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-disasters
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/floods
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hydroelectricity
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/earthquakes
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/flood-control
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nepal
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[17] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bihar