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Gabion Walls Shield Bird Sanctuary Islands from Floods
2 Jun
Summary
- Eco-friendly gabion structures are being built to protect river islands.
- Gabions use stones in wire mesh for stable flood protection.
- This new method replaces less effective sandbag barriers.
In Mandya district, authorities at the Ranganathittu Bird Sanctuary are implementing a sustainable solution to protect crucial river islands. Gabion structures, comprised of stones encased in corrosion-resistant wire mesh, are being constructed to shield the islands from erosion caused by floodwaters. This project specifically targets five islands on the Cauvery River, which are vital nesting and breeding sites for numerous bird species.
The previous reliance on sandbag barriers proved ineffective against strong currents, especially during high water releases from the Krishna Raja Sagar dam. These failures led to significant erosion, reducing island size and destroying nests, eggs, and chicks. The adoption of gabion technology represents a shift towards a permanent and resilient method for island fortification.
This new system is designed to remain stable during floods, offering long-lasting protection while integrating with the natural riverine environment. The initiative will eventually extend to all 25 islands within the sanctuary, ensuring the continued safety of bird populations.
