The Greater Chennai Corporation (GCC) has announced plans to divert the three-metre-wide TVS canal in Anna Nagar West, a precursor to the Otteri Nullah, into the Padikuppam canal near TVS Lucas. The move aims to address flood concerns in the region. Residents of Anna Nagar have urged the GCC to prioritize desilting along the narrow diversion channel on 3rd Avenue.
The TVS canal, stretching two kilometres, carries floodwaters through Ambattur Industrial Estate, Kumarasamy Nagar, and Anna Nagar West before merging with Otteri Nullah near Anna Nagar railway station. To address silt accumulation, dredging operations using floaters and Poclain machinery have removed 1,250 metric tonnes of silt from Otteri Nullah and Virugambakkam canal, according to Regional Deputy Commissioner (Central) K.J. Praveen Kumar.
To ensure precise dredging, the GCC is collaborating with IIT Madras on a bathymetric study of city canals. These scientific methods aim to enhance flood mitigation efforts and improve water flow, the official added.
Desilting operations along the Otteri Nullah and Virugambakkam canal have removed a total of 1,221.32 metric tonnes of silt as of November 21. Initiated in late October 2024, these operations include the use of specialized machinery to clear obstructions and improve drainage.
Residents’ groups, such as the Federation of Anna Nagar Residents Associations (FOARA), have acknowledged the Corporation's efforts to include community feedback in planning. In Anna Nagar, a ₹30-lakh project was recently completed, featuring a 27,000-litre sump with 30 HP pumps in S Block, the area's lowest point, to redirect water to the Otteri Nullah.
Additionally, FOARA highlighted flood mitigation efforts such as linking stormwater drains from 4th Main Road and 6th Avenue to the 3rd Avenue diversion channel, installing silt catch pits at manholes, and cleaning the Otteri Nullah stretch. The Otteri Nullah, transferred to GCC from the Water Resources Department on October 20, is undergoing short- and long-term measures to prevent flooding, according to the Corporation.








