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Current AffairsEnvironment

White-Bellied Heron Overlooked as 1,200 MW Lohit Hydropower Project Gets Forest Clearance

Wednesday, 22 July 20262 min read

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EnvironmentDeep Analysis

In this article

Why This MattersBackgroundKey PointsAnalysisWay Forward

Why This Matters

India's rarest large waterbird, the white-bellied heron (Ardea insignis), faces a fresh threat after the Forest Advisory Committee (FAC) granted in-principle forest clearance to the 1,200 MW Lohit hydropower project in Arunachal Pradesh in December 2025 — even though the project's environmental assessment reportedly omitted this Critically Endangered species entirely. India's white-bellied heron population stands at just 6 to 9 individuals, and nearly 70% of them are concentrated in the Lohit river basin, the very landscape the project will alter. THDC India Ltd, the project developer, still awaits final forest clearance, but the in-principle approval already signals how the process is likely to conclude, reigniting debate over how hydropower expansion in the ecologically fragile Eastern Himalaya is weighed against irreversible biodiversity loss.

For aspirants preparing for UPSC, UPPSC, MPSC and other state PSC exams, this topic is directly relevant for GS Paper 3 (Environment, Biodiversity & Conservation) and frequently appears as a species-in-news prelims question.

Background

The white-bellied heron is one of the rarest birds on Earth, listed as Critically Endangered by the IUCN since 2007. It is a large, slate-grey heron historically found across Bhutan, north-east India, Myanmar, and Bangladesh, but its range has contracted sharply over recent decades due to habitat loss, river disturbance, and hunting pressure. In India, it survives almost exclusively along undisturbed, slow-flowing rivers in Arunachal Pradesh and Assam, and the Lohit river basin has emerged as its last major Indian stronghold, sheltering roughly 70% of the country's tiny population of 6 to 9 birds. The species depends on large stretches of undisturbed riverine forest and stable water flow, which makes it acutely vulnerable to any dam construction, flow regulation, or forest clearing in its habitat. Under Indian law, it holds the highest level of protection available to a wild species, being listed in Schedule I of the Wildlife (Protection) Act, 1972.

The proposed Lohit hydropower project is a 1,200 MW scheme being developed by THDC India Ltd, a public sector hydropower company, on the Lohit river in Arunachal Pradesh. Because the project requires diverting forest land for the dam, reservoir, and associated infrastructure, it needed clearance under the Forest (Conservation) Act, 1980, which mandates review by the Forest Advisory Committee (FAC) — a statutory body under the Ministry of Environment, Forest and Climate Change (MoEFCC) — before any non-forest use of forest land can proceed. In December 2025, the FAC granted in-principle (Stage-I) forest clearance to the project, moving it a step closer to final approval, even as reports suggested the project's Environmental Impact Assessment (EIA) had not adequately documented the presence of the white-bellied heron in the affected stretch of the river.

Key Points

The Species

  • The white-bellied heron (Ardea insignis) has been listed as Critically Endangered by the IUCN since 2007, making it one of the rarest large birds in the world.
  • India's population is estimated at just 6 to 9 individuals, with roughly 70% of them found in the Lohit river basin of Arunachal Pradesh.
  • It carries the highest level of domestic legal protection, being listed under Schedule I of the Wildlife (Protection) Act, 1972.

The Project

  • The 1,200 MW Lohit hydropower project is being developed by THDC India Ltd on the Lohit river in Arunachal Pradesh.
  • The project is expected to require the felling of more than 33,000 trees for the dam, reservoir, and associated infrastructure.

The Clearance Process

  • The Forest Advisory Committee (FAC), which operates under the Forest (Conservation) Act, 1980, granted in-principle (Stage-I) forest clearance to the project in December 2025.
  • Final (Stage-II) forest clearance is still pending, and can carry additional conditions imposed by the FAC or MoEFCC.

The Assessment Gap

  • Reports indicate the project's Environmental Impact Assessment did not adequately document or account for the presence of the white-bellied heron in the project area.
  • This has raised concerns about whether the EIA process — meant to anticipate ecological harm before clearance is granted — is being applied rigorously in the habitat of Schedule I species.

Compensatory Afforestation

  • To offset the forest land diverted, compensatory afforestation has been proposed across 51 patches in Madhya Pradesh.
  • These patches lie over 1,000 km from the Lohit river basin, raising questions about the ecological equivalence between the forest that is lost and the forest that is planted.
  • Critics argue that compensatory afforestation in a distant, ecologically different zone cannot substitute for the specific riverine habitat the white-bellied heron depends on.

Wider Stakes

  • The Eastern Himalaya is a globally recognised biodiversity hotspot, and Arunachal Pradesh hosts a significant share of India's under-construction and planned hydropower capacity.
  • The case has become a flashpoint in the broader national debate over balancing hydropower expansion with biodiversity conservation obligations.

Analysis

Political and Constitutional Dimensions The episode sits at the intersection of India's cooperative federalism and its environmental governance architecture. Forest and wildlife are subjects on the Concurrent List, meaning both the Arunachal Pradesh government, which is keen to unlock hydropower revenue, and the central Ministry of Environment, Forest and Climate Change, which administers the Forest (Conservation) Act, 1980 through the FAC, have a stake in the outcome. Article 48A of the Constitution directs the state to protect and improve the environment and safeguard forests and wildlife, while Article 51A(g) casts this as a fundamental duty of every citizen — both frequently invoked in judicial review of clearance decisions like this one.

Economic and Financial Dimensions Hydropower projects such as the 1,200 MW Lohit scheme represent significant capital investment by THDC India Ltd and are pitched as a source of clean energy and revenue for a state with a limited industrial base. Delays or rejections at the clearance stage carry real financial costs for the developer, which strengthens the incentive to secure approvals quickly, sometimes at the expense of thorough baseline biodiversity surveys. At the same time, compensatory afforestation itself has a cost, and spending it on distant patches in Madhya Pradesh — rather than habitat restoration nearer the Lohit basin — may represent a poor ecological return on that expenditure.

Social Dimensions Large hydropower projects in the Eastern Himalaya typically affect local and indigenous communities who depend on the river system for livelihoods, water, and cultural practices. Loss of forest cover and altered river flow can disrupt these dependencies even where formal displacement is limited, making meaningful public consultation and transparent disclosure of a project's ecological footprint — including its impact on species like the white-bellied heron — essential to maintaining public trust in the clearance process.

Governance and Administrative Dimensions The core governance question raised by this case is whether the EIA and forest clearance process has adequate safeguards to ensure rare and Schedule I species are identified and assessed before, not after, a project is cleared. An EIA that omits a Critically Endangered species with such a concentrated population in the project area points to gaps in survey rigour, external expert review, and cross-checking against existing conservation data before the FAC deliberates. Strengthening species-specific baseline surveys and independent verification would improve the credibility of future clearances.

International Perspective The white-bellied heron's tiny global range spans India, Bhutan, and historically Myanmar and Bangladesh, and its IUCN Critically Endangered listing reflects an international scientific consensus on its precarious status. Because the species' survival depends on coordinated conservation across these range countries, developments that degrade its habitat within India also carry implications for regional conservation efforts, including those undertaken by Bhutan, which has invested in dedicated white-bellied heron conservation programmes. India's clearance decisions in such transboundary-species habitats are watched as a signal of its commitment to global biodiversity conservation goals.

Way Forward

  1. The final (Stage-II) forest clearance decision should be preceded by a fresh, independent field survey specifically targeting the white-bellied heron and other Schedule I species in the Lohit basin before any construction activity begins.
  2. The Forest Advisory Committee should mandate that project-specific EIAs explicitly document rare and threatened species using the latest available conservation data, not rely solely on developer-submitted baseline reports.
  3. Compensatory afforestation should prioritise ecological equivalence — restoring or protecting riverine forest habitat within or near the Lohit basin — rather than defaulting to administratively convenient patches over 1,000 km away in Madhya Pradesh.
  4. THDC India Ltd should be required to fund and support dedicated white-bellied heron monitoring and habitat protection measures as a binding condition of any final clearance.
  5. MoEFCC should strengthen inter-agency coordination between the FAC, wildlife authorities, and state forest departments so that Schedule I species records are systematically cross-checked before in-principle clearances are granted.
  6. Long-term cumulative impact assessments are needed for the Eastern Himalaya's hydropower corridor as a whole, rather than evaluating each project in isolation from the region's broader biodiversity stakes.
  7. Greater transparency and public disclosure of EIA findings would allow independent conservationists and local communities to flag gaps like the heron omission earlier in the clearance process.

Practice on PSCPrep: Attempt previous year questions on endangered species for free — search 'white-bellied heron' in the PYQ section at PSCPrep to practise UPSC and state PSC questions on this topic without creating an account.

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