The governments concerned must clear the mess before proceeding with further construction. They should not add to submergence and displacement before clearing the backlog fully.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/narmada-valley-rehabilitation-work-let-right-be-done
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/narmada-valley-project
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rehabilitation
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/madhya-pradesh