Rampant sand mining activity on Cheyyar river bed has rendered the twin water channels, created 120 years ago near Kavanthandalam, useless.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/sand-mining-destroysancient-water-channels
[2] http://admin.indiaenvironmentportal.org.in/category/author/v-venkatasubramanian
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-chennai
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[6] http://admin.indiaenvironmentportal.org.in/thesaurus/sand-mining
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cheyyar
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rivers
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/minor-minerals
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/farmers