With reference to the Pallikaranai marshland and the TNSWA proposal, consider the following statements: 1. The TNSWA proposed an interim Zone of Influence covering 150 hectares. 2. The proposal was submitted to the National Green Tribunal (NGT). 3. The Pallikaranai marshland is located in the state of Tamil Nadu. Which of the statements given above is/are correct?

TNSWA proposes 128.19-hectare interim Zone of Influence to mitigate NGT construction ban

GS3Economy · S&T · Environment · Security· Pollution (air, water, plastic)· Prelims + Mains· 13 October 2026

Urban wetland conservation vs infrastructure development: a GS3 Environment and Ecology case study.

Why in news

The Tamil Nadu State Wetlands Authority (TNSWA) proposed a 128.19-hectare interim Zone of Influence to mitigate a National Green Tribunal (NGT) construction ban near the Pallikaranai marshland.

Background

The proposal covers 128.19 hectares across 36 survey numbers. The report was presented to the bench comprising Chief Justice Sushrut Arvind Dharmadhikari and Justice G. Arul Murugan by representatives from the state and CREDAI.

Facts for Prelims

PlacePallikaranai marshland is located in Tamil Nadu.
BodyTNSWA: Tamil Nadu State Wetlands Authority.
FactThe proposed interim Zone of Influence covers 128.19 hectares.
BodyNGT: National Green Tribunal.

Prelims practice question

With reference to the Pallikaranai marshland and the TNSWA proposal, consider the following statements:

The TNSWA proposed an interim Zone of Influence covering 150 hectares.
The proposal was submitted to the National Green Tribunal (NGT).
The Pallikaranai marshland is located in the state of Tamil Nadu.

Which of the statements given above is/are correct?

(a)1 only
(b)3 only
(c)1 and 3 only
(d)2 and 3 only

Show answer

Answer: (d) 2 and 3 only — Statements 2 and 3 are correct. Statement 1 is incorrect: The proposed interim Zone of Influence covers 128.19 hectares.

For Mains

Q. Discuss the challenges in balancing urban infrastructure development with the preservation of urban wetlands and biodiversity in rapidly expanding metropolitan areas.

Dimensions to cover in your answer

Regulatory friction: Conflict between NGT environmental mandates and urban real estate development needs
Ecological degradation: Loss of carbon sinks and flood-mitigation capacity due to encroachment on marshlands

Keywords: Urban Wetlands · Environmental Governance · Sustainable Development · Biodiversity Conservation

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