Lake Degradation in India: CAG Findings, PTD Implications & Call for a National Legal Framework (2026)

<h2>Overview</h2> <p>India’s lakes—covering about <strong>4% of the land surface</strong> and supplying <strong>90% of surface fresh water</strong>—are disappearing at an alarming pace. A recent <span class="key-term" data-definition="Comptroller and Auditor General (CAG) — India’s supreme audit institution that examines the use of public funds and reports on governance (GS2: Polity)">CAG</span> report (up to March <strong>2022</strong>) shows that in <strong>Jammu & Kashmir</strong> only <strong>179 of the 697 lakes recorded in 1967 remain intact</strong>, with <strong>315 lakes completely vanished</strong>. Similar trends are evident across the country, raising urgent questions about governance, the <span class="key-term" data-definition="Public Trust Doctrine (PTD) — a legal principle that the state holds natural resources in trust for the public and future generations (GS2: Polity)">Public Trust Doctrine (PTD)</span>, and the need for a dedicated national law.</p> <h3>Key Developments</h3> <ul> <li>Loss of <strong>518 lakes</strong> in J&K since 1967; <strong>315 lakes</strong> have fully disappeared.</li> <li>Supreme Court’s <em>Swachh Association vs State of Maharashtra (2025)</em> expanded PTD to include artificial lakes and reservoirs.</li> <li>Absence of a central lake‑conservation act; existing <span class="key-term" data-definition="Wetlands (Conservation and Management) Rules, 2017 — regulations under the Environment Protection Act, 1986 that protect designated wetlands and Ramsar sites (GS3: Environment)">Wetlands (Conservation and Management) Rules, 2017</span> apply only to notified wetlands and <span class="key-term" data-definition="Ramsar sites — wetlands of international importance designated under the Ramsar Convention, receiving special protection (GS3: Environment)">Ramsar sites</span>.</li> <li>Implementation gaps in the <span class="key-term" data-definition="National Programme for Conservation of Aquatic Eco-systems (NPCA) — a centrally sponsored scheme to conserve lakes and wetlands, launched in 2013 (GS3: Environment)">NPCA</span>, which is limited to state‑nominated water bodies.</li> </ul> <h3>Important Facts</h3> <p>Five major threats drive lake loss:</p> <ul> <li><strong>Pollution &amp; eutrophication</strong> – unchecked waste, sewage and fertilizer runoff trigger <span class="key-term" data-definition="Eutrophication — nutrient enrichment of water bodies leading to algal blooms and oxygen depletion, a major cause of lake degradation (GS3: Environment)">eutrophication</span>, as seen in Bellandur (Bengaluru) and Hussain Sagar (Hyderabad).</li> <li><strong>Illegal encroachment</strong> – rapid urbanisation converts lakebeds into real‑estate, a primary cause highlighted by the CAG.</li> <li><strong>Sand &amp; gravel mining</strong> – unregulated extraction degrades lake beds (e.g., Balsamand, Surajkund).</li> <li><strong>Unregulated tourism</strong> – visitor pressure adds waste and disturbs habitats.</li> <li><strong>Land‑use change</strong> – infrastructure projects permanently replace lakes with built‑up areas.</li> </ul> <h3>UPSC Relevance</h3> <p>Understanding lake degradation links directly to several UPSC syllabi:</p> <ul> <li><strong>GS 2 (Polity)</strong> – PTD, federal‑state division of water management, and audit role of the CAG.</li> <li><strong>GS 3 (Environment)</strong> – ecological functions of lakes (groundwater recharge, flood regulation, biodiversity), threats like eutrophication, and policy instruments (Wetlands Rules, NPCA).</li> <li><strong>GS 4 (Ethics)</strong> – stewardship of common resources and inter‑generational equity.</li> </ul> <h3>Way Forward</h3> <p>Experts recommend a comprehensive national framework that includes:</p> <ul> <li>Enactment of a <strong>Lake Conservation Act</strong> with uniform standards and a statutory nodal authority.</li> <li>Scientific mapping of all lakes, regular monitoring, and public‑access data portals.</li> <li>Strengthened enforcement of existing pollution control laws and stricter penalties for encroachment and illegal mining.</li> <li>Community participation through lake‑shrine committees and citizen‑science initiatives.</li> <li>Integration of lake management with urban planning to prevent land‑use conflicts.</li> </ul> <p>Addressing these gaps will not only safeguard water security but also uphold the constitutional mandate of the state as a trustee of natural resources.</p>