Study shows that stripping mountains for coal has a much greater impact than urban growth.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/mountain-mining-damages-streams
[2] http://admin.indiaenvironmentportal.org.in/category/author/natasha-gilbert
[3] http://admin.indiaenvironmentportal.org.in/category/journal/nature
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mountains
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urbanisation
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/research