A major procedural lapse has surfaced in the ₹342.60-crore Mamallan reservoir project as the WRD seeks mandatory fisheries clearance long after work commenced.

Key Takeaways

  • The Mamallan reservoir project has a budget of ₹342.60 crore.
  • WRD requested the mandatory Fisheries Dept NOC six months after construction started.
  • Local fishing communities are protesting the conversion of wetlands into a reservoir.
  • CRZ clearance conditions required prior approval from the Fisheries Department.

In a significant administrative oversight, the Water Resources Department (WRD) has sought a mandatory No-Objection Certificate (NOC) from the Fisheries Department nearly six months after the formal commencement of the Mamallan reservoir construction. This requirement was a prerequisite stipulated under the project's Coastal Regulation Zone (CRZ) clearance.

The Tamil Nadu State Coastal Zone Management Authority (TNSCZMA) had granted CRZ clearance for the reservoir on December 3, 2025. The clearance specifically mandated that the WRD obtain an NOC from the Fisheries and Fishermen Welfare Department to proceed with the development of the drinking water reservoir in the Kovalam sub-basin. Despite this, the foundation stone was laid by the then Chief Minister on January 19, 2026, and work proceeded without the necessary permit.

Why This Matters

BozokMedia analysis shows that such procedural lapses in high-value infrastructure projects can lead to severe legal bottlenecks and financial losses. By bypassing mandatory environmental and departmental clearances, the state risks facing intense litigation from environmentalists and local stakeholders, potentially stalling the project indefinitely.

Ignoring statutory clearances during the construction phase creates a legal minefield for state-funded infrastructure projects.

The project has faced intense local opposition. Fishing communities in the Nemmeli and Kovalam areas argue that converting the salt marshes and backwaters into a freshwater reservoir will destroy vital fish breeding habitats and jeopardize their primary source of livelihood.

Historical Background

The Kovalam-Nemmeli stretch is a critical coastal ecosystem. A government-commissioned inundation map from 2018 highlighted that large sections of the proposed reservoir site lie within the 3.5 to 4.5-meter inundation zone, making it highly vulnerable to extreme sea conditions and storm surges.

Did You Know?: Coastal wetlands like the Kovalam backwaters act as natural buffers, protecting inland areas from storm surges and flooding.

Frequently Asked Questions

1. What is the total cost of the Mamallan reservoir project?
The project is valued at approximately ₹342.60 crore.

2. Why are the local residents protesting?
Residents and fishermen fear the project will destroy their livelihoods and the natural ecological balance of the coastal wetlands.