UPSC Previous Year Question | Mains GS3 | 2020
Coastal sand mining, whether legal or illegal, poses one of the biggest threats to our environment. Analyze the impact of sand mining along the Indian coasts, citing specific examples. (Answer in 150 words)
Answer
Introduction
Coastal sand is a finite geomorphic resource that maintains beaches, dunes, estuaries and near-shore habitats.
Analysis
Impacts
- Removal of sediment accelerates beach erosion, saline intrusion and shoreline retreat, threatening homes and infrastructure.
- Dunes and natural storm buffers are flattened, increasing cyclone and tsunami vulnerability.
- Mining damages turtle nesting beaches, benthic organisms, mangroves and estuarine fisheries.
- Altered sediment transport can deepen channels in one location while starving neighbouring beaches.
- Illegal extraction fuels organised activity and undermines coastal regulation.
Examples and response
Kerala, Tamil Nadu, Odisha and Goa have reported erosion and ecological stress linked to extraction and altered coastal processes. Enforce CRZ rules, map replenishable deposits, use alternatives such as manufactured sand, strengthen community monitoring and conduct cumulative impact assessments.
Conclusion
Sand management must follow carrying capacity rather than short-term construction demand.
Keywords
coastal sand mining; CRZ; erosion; marine biodiversity
Topics: coastal ecology, environment, sand mining, shoreline erosion