2 days ago
Chennai corporation plans Mambalam Canal desilting before northeast monsoon
The Greater Chennai Corporation wants to clean and improve the Mambalam Canal before the northeast monsoon.
The canal carries rainwater through several parts of Chennai.
Workers will remove mud and rubbish and make some sections deeper.
They will also clear blocked culverts and widen the place where the canal meets the Adyar River.
These changes are meant to help rainwater flow faster and reduce flooding.
Machines called robotic excavators will be used for the work.
Chennai Metro Rail may help clear a section near its underground metro construction.
The project follows an audit that found that much of an earlier, more expensive restoration project was not completed.
The Greater Chennai Corporation will desilt and deepen the 5.7-km Mambalam Canal at a cost of Rs 46.7 lakh.
The project targets flood-prone areas including T Nagar, West Mambalam, Nandanam, and Saidapet.
Work includes removing silt, clearing culvert obstructions, deepening sections, and widening the outfall into the Adyar River.
Robotic excavators will initially clear a 300-metre stretch near Valluvar Kottam, while work will also occur near Bazullah Road and Venkatnarayana Road.
The intervention aims to raise capacity from 200 cusecs to about 500 cusecs after an audit criticized incomplete earlier restoration work.
- Who
- The Greater Chennai Corporation is leading the project, with possible assistance from Chennai Metro Rail.
- What
- A Rs 46.7 lakh operation will desilt, deepen, clear, and partly widen the Mambalam Canal.
- Where
- The 5.7-km canal passes through T Nagar, West Mambalam, Nandanam, and Saidapet in Chennai, with work planned near Valluvar Kottam, Bazullah Road, Venkatnarayana Road, and the YMCA outfall.
- When
- The work is planned before the northeast monsoon; tenders have been invited and a contractor is expected to be selected shortly.
- Why
- The project is intended to increase the canal's rainwater-carrying capacity and reduce flooding and water backup during heavy rainfall.
Key facts
- Canal length
- 5.7 km
- Project cost
- Rs 46.7 lakh
- Current capacity
- About 200 cusecs
- Planned capacity
- About 500 cusecs
- Initial clearing stretch
- Approximately 300 metres near Valluvar Kottam
- Earlier restoration spending
- Rs 59.4 crore under Chennai's Smart City programme
- Reported remaining encroachments
- Around nine, including a temple structure across the Theagaraya Road section









