Environmental Impact of Sand Mining

Environmental Challenges of Sand Mining in India

• Context: Sand is the second-most exploited natural resource after water globally, with significant implications for environmental degradation, particularly evident in India.

• Impact of Unregulated Sand Extraction:

  • Deepens and widens riverbeds, destabilizes riverbanks.
  • Alters natural water flow, causing downstream erosion.

• Judicial Oversight:

  • The Supreme Court has reprimanded state governments multiple times since 2023 for inadequate enforcement against illegal sand mining.
  • Despite judicial directives, a 40% supply gap exists in sand needed for India's construction sector, leading to a lack of compliance with court orders.

• Central Empowered Committee (CEC) Proposals:

  • Proposed a three-year roadmap to phase out sand extraction from active river channels.
  • Suggested alternative sources for sand to reduce reliance on natural resources.
  • Recommended desilting of dams and reservoirs to enhance water capacity and restore natural sediment flow.

• Scientific Insight and Recommendations:

  • Desilting is aimed at improving river carrying capacity and mitigating blockages that affect water flow, especially during heavy rainfall.
  • Need for a long-term implementation strategy as sediment plays a crucial role in sustaining river ecosystems.
  • Previous inquiries (notably a study led by B K Mittal in 2022) indicated that large-scale desilting might not be economically viable, advocating for targeted dredging based on scientific evaluations.

• Regulatory Framework:

  • CEC's recommendation to the Jal Shakti Ministry to establish a national framework for sediment availability in reservoirs, including financial and environmental safeguards.
  • Emphasis on the need for a balanced approach that prioritizes both construction material needs and the ecological health of water bodies.

• Key Takeaway: Effective governance and sustainable practices must reconcile the demand for sand in construction with the ecological necessity of maintaining healthy river systems, moving away from treating rivers as mere sources of raw material.

Conclusion: Addressing illegal sand mining and implementing sustainable water management practices are critical initiatives for preserving India's freshwater resources while supporting economic growth in the construction sector.