The government has promised to bring the Yamuna river under the the Environment Protection Act within two months to ensure "free flow of the river".
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/yamuna-will-be-brought-under-environment-protection-act-govt
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/yamuna
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment-act-1986
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kosi
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources