Dredging begins at Ennore estuary after five years; second phase to cover 1.45 km
The Hindu
Work on the long-pending project to dredge the Ennore estuary has been taken up. The Water Resources Department has started the process to build a training wall at the mouth of Ennore to prevent sand deposit and flooding in areas upstream along the Kosasthalaiyar river
Work on the long-pending project to dredge the Ennore estuary has been taken up. The Water Resources Department has started the process to build a training wall at the mouth of Ennore to prevent sand deposit and flooding in areas upstream along the Kosasthalaiyar river.
The project for sustainable opening of the Ennore mouth remained on paper for nearly five years for various reasons, including want of funds and environment clearances. Dredging is expected to ensure smooth tidal action and easy movement of boats.
Officials said the dredged soil was deposited at the nearby spot for beach nourishment in the fishing hamlets. The Ennore estuary would be dredged to enable the mouth to be open for a length of 550 metres. The project is being implemented with an allocation of ₹135 crore obtained from Kamarajar Port Ltd. (KPL).
Every year, sand bars block a large extent of the mouth, which is the confluence point of the Kosasthalaiyar river and the sea and only temporary dredging was carried out for a minimal length before the onset of northeast monsoon.
In a bid to find a permanent solution for sedimentation, the department is building a training wall, which would guide the flow on either side of the river up to the estuary to ensure smooth tidal action and draining of floodwater during monsoon. While it would be 500 metres long on northern side, the training wall on the southern side would be 400 metres long.
“We are making precast tetrapods in a yard at Tiruvottiyur and transporting them to the site at Ennore. The training wall will be a combination of boulders and tetrapods to help withstand strong wave action and provide better access for boats,” said an official.
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