Keralam raises demand of detailed technical study of Mullaperiyar dam before safety panel
The State submitted an eight-page written document detailing its safety concerns
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Context
The Kerala government has formally requested a comprehensive, long-term technical safety evaluation of the 128-year-old by a five-member safety panel constituted following a 2022 directive. Kerala's concerns center on hydrological safety (flood capacity), structural integrity (requiring core sampling), seismic vulnerability, and seepage instrumentation, emphasizing that a routine one-day inspection is insufficient.
UPSC Perspectives
Polity
The dispute is a classic case study of inter-state water conflicts in India's federal structure. Although the dam is located in Kerala, it is operated and maintained by Tamil Nadu under a 999-year lease agreement from the British era. This creates a complex governance challenge where the resource-hosting state (Kerala) bears the primary safety risks, while the downstream state (Tamil Nadu) reaps the economic benefits of water diversion for irrigation. UPSC often asks about the mechanisms for resolving such disputes, primarily governed by of the Constitution and the . However, the Mullaperiyar issue is distinct; it is fundamentally about structural safety rather than water allocation, which is why it falls under the purview of the under (original jurisdiction for inter-state disputes) and specialized safety panels, rather than a traditional water disputes tribunal.
Disaster Management
Kerala's specific demands—hydrological, structural, seismic, and seepage assessments—highlight the critical components of dam safety management. The state's vulnerability is exacerbated by its topography and the dam's age. The demand for 'core sampling' and physical testing points to the deterioration of the masonry structure (constructed using limestone and surkhi). The concern over 'hydrological safety' is particularly relevant given the increased frequency of extreme weather events in the , such as the devastating 2018 Kerala floods. This underscores the need for proactive disaster risk reduction (DRR) strategies. The situation aligns with the objectives of the , which aims to establish a robust institutional framework for the surveillance, inspection, operation, and maintenance of specified dams across the country to prevent dam failure-related disasters.
Geographical
Geographically, the is situated on the in the , a region known for its ecological sensitivity and seismic vulnerability. Kerala's demand for a 're-evaluation of geological risks and earthquake resilience' is critical because a dam failure would unleash a catastrophic flood into the densely populated downstream districts of Kerala. The dam's location also involves the diversion of water from the west-flowing basin to the east-flowing basin in Tamil Nadu, which is essential for agriculture in the rain-shadow region of the latter state. This geographical reality—the transfer of water across drainage basins to address regional water scarcity—is central to understanding the high stakes involved for Tamil Nadu and why finding a mutually agreeable solution is so challenging.