The 13th Century Hauz Khas lake, which was to be developed as a tourist attraction as per a 2003 High Court order, is dying a slow death.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/algae-choke-hauz-khas-lake
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lake-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecosystems
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lakes
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tourism
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/high-court
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi