With reference to the Pallikaranai marshland and the NGT ban, consider the following statements: 1. The Tamil Nadu State Wetlands Authority proposed an interim Zone of Influence covering 500 hectares. 2. The Madras High Court is considering a challenge against the construction ban by CREDAI-Chennai. 3. The NGT ban affects a total of 3,474 hectares of land in South Chennai. Which of the statements given above is/are correct?

Madras High Court reserves order on NGT ban on constructions near Pallikaranai marshland

GS3Economy · S&T · Environment · Security· Species, protected areas & wetlands· Prelims + Mains· 12 November 2026

Urban wetlands vs infrastructure: a GS3 case study on environmental jurisprudence and biodiversity conservation.

Why in news

The Madras High Court reserved its order on a challenge by CREDAI-Chennai against a National Green Tribunal (NGT) ban on new constructions within one kilometre of the Pallikaranai marshland.

Background

The NGT ban affects 3,474 hectares in South Chennai. The Tamil Nadu State Wetlands Authority proposed an interim Zone of Influence covering 128.19 hectares.

Facts for Prelims

PlacePallikaranai marshland is located in South Chennai, Tamil Nadu
BodyNational Green Tribunal (NGT) is the body that imposed the construction ban
BodyTamil Nadu State Wetlands Authority is the body that proposed the interim Zone of Influence
FactThe NGT ban covers 3,474 hectares of land

Prelims practice question

With reference to the Pallikaranai marshland and the NGT ban, consider the following statements:

The Tamil Nadu State Wetlands Authority proposed an interim Zone of Influence covering 500 hectares.
The Madras High Court is considering a challenge against the construction ban by CREDAI-Chennai.
The NGT ban affects a total of 3,474 hectares of land in South Chennai.

Which of the statements given above is/are correct?

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

Show answer

Answer: (c) 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 conflict between urban infrastructure expansion and the preservation of urban wetlands in India, using the Pallikaranai marshland case as a reference.

Dimensions to cover in your answer

Regulatory friction: Conflict between NGT environmental mandates and real estate development interests
Ecological preservation: Importance of marshlands in urban flood mitigation and biodiversity conservation
Jurisdictional overlap: Coordination between State Wetlands Authorities and National Green Tribunal mandates

Keywords: Urban Wetlands · Environmental Jurisprudence · Biodiversity Conservation · Sustainable Urbanization · Ecological Buffer Zones

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