Environmental Concerns
Wetlands, Paddy Fields, and Drainage Systems
Kerala's distinctive geography — a narrow coastal strip with a dense network of rivers, canals, wetlands (koles), and paddy (rice) fields — makes large linear infrastructure projects exceptionally complex from an environmental standpoint.
- Kerala has significant wetland coverage under the Wetlands (Conservation and Management) Rules, 2017 and the Ramsar Convention (India has 89 Ramsar sites). Wetlands in Kerala's lowland districts (Alappuzha, Kottayam, Thrissur) serve as flood buffers and ecological corridors.
- The SilverLine alignment proposed elevated embankments (a raised earthen bund) for much of its run through low-lying areas. Environmental experts warned these embankments would fragment Kerala's natural drainage network, blocking the lateral flow of floodwaters during monsoon — potentially intensifying flooding.
- Paddy land protection: Kerala's Paddy Land and Wetland Conservation Act, 2008 restricts conversion of paddy fields and wetlands to other uses. Critics alleged the project would convert significant paddy land despite these protections.
- The Western Ghats, which run along Kerala's eastern border, define the state's river systems. Any disruption to drainage in the densely settled western lowlands has cascading consequences.
● Tracked since April 10, 2026 · last seen May 23, 2026 · updates as the daily brief publishes
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