The 2.5-km-long natural stream Varalchal is heavily silted
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/degradation-floodplain-wetland-poses-threat-pampa
[2] http://admin.indiaenvironmentportal.org.in/category/author/radhakrishnan-kuttoor
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-thiruvananthapuram
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kerala
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wetlands
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pampa
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecology
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/flood-control
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources