With creationists arguing over its formation, and lengthy disputes over land rights, the Grand Canyon has often been the focus of controversy.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/grand-canyon-flushing-experiment-criticised
[2] http://admin.indiaenvironmentportal.org.in/category/journal/new-scientist
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/colorado
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dams
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sedimentation
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fisheries
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/riverine-ecology
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hydroelectricity
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/hydrology