Key Facts & Data

  • Area: ~5,400 sq km covering a 600 km stretch of the Chambal River (total river length 960 km).
  • States Involved: Rajasthan, Madhya Pradesh, Uttar Pradesh – the only tri‑state sanctuary in India.
  • Biodiversity Highlights:
  • ~90% of the global wild gharial population.
  • Significant numbers of Ganges River Dolphin, marsh crocodile (mugger), red‑crowned roof turtle, smooth‑coated otter, striped hyena.
  • Over 330 bird species, including the Indian skimmer.
  • Designations:
  • IUCN Category IV (habitat/species management area).
  • Recognised Important Bird Area (IBA).
  • Proposed Ramsar Site and UNESCO World Heritage Site candidate.
  • Project Crocodile: Initiated in 1975 to revive crocodilian numbers.

Background & Context

The Chambal River remains one of India’s cleanest lotic (flowing‑water) ecosystems, characterised by deep channels, sandbanks and ravines ("beehad"). However, organized illegal sand mining—often termed the sand mafia—has intensified, degrading nesting grounds for gharials and turtles, lowering water levels, and threatening the river’s ecological balance.

Significance for India / Governance / Policy

  • Wildlife Conservation: Protecting the last stronghold of gharials and river dolphins aligns with India’s commitments under the Convention on Biological Diversity and CITES.
  • Environmental Justice: The Supreme Court’s suo motu action reflects the judiciary’s role in safeguarding the right to a healthy environment (Article 21, Constitution of India).
  • Policy Implications: Highlights the need for:
  • Strict enforcement of the Environment (Protection) Act, 1986.
  • Community‑based monitoring of sand extraction.
  • Integration of Public Trust Doctrine in natural resource management.
  • Economic Angle: Sand is a critical construction input; regulating its extraction balances developmental needs with ecological sustainability.

Related Constitutional / Legal Provisions

  • Article 21 – Right to life includes the right to a clean, healthy environment.
  • Article 32 – Supreme Court’s power to enforce fundamental rights, enabling suo motu cognisance.
  • Environment (Protection) Act, 1986 – Empowers the Central Government and courts to issue directions to prevent environmental degradation.
  • Wildlife Protection Act, 1972 – Provides legal framework for protecting species like the gharial.

Why UPSC Should Care

  • Prelims: Factual data on area, species, designations, and legal actions.
  • Mains: Analytical angles on judicial activism, public trust doctrine, and sustainable resource governance.
  • Essay/Optional: Could be linked to topics on biodiversity conservation, riverine ecosystems, or the role of the judiciary in environmental protection.