The Hindu             27.11.2013

Neglected water bodies set to be revived

Several water bodies on the city’s fringes that are in dire need of attention are set to be revived.

The Water Resources Department has come up with a plan to salvage 21 lakes in Tiruvallur and Kancheepuram districts, by restoring them, thereby increasing irrigation potential and recharging the groundwater table in their neighbourhoods.

The department is currently awaiting the State government’s approval for the project, which will be carried out as the third phase of the Restoration of Traditional Water Bodies Scheme.

Large water bodies such as those at Manimangalam, Sembakkam, Somangalam, Ottiyambakkam, Thenneri near Walajabad, Mugaiyur near Mamallapuram and Vellancheri near Tiruttani have been identified for rejuvenation in the coming fiscal.

WRD officials said the water body in Thenneri, which is spread over 5.77 sq. km., is the largest among the tanks chosen this time. Most of the lakes chosen have been neglected for several years, an official said. The Manimangalam lake, is one such, spread over 3.42 sq. km. with an irrigation command area of nearly 840 hectares.

“We plan to strengthen the bunds, repair damaged sluice gates and weirs that release surplus water as well as desilt the lakes. Their boundaries will also be demarcated to ensure that there are no encroachments,” said an official.

The Restoration of Traditional Water Bodies Scheme began in 2011-12, and is being implemented for four years across the State. Every year, the government allots Rs. 50 crore for it.

In the first phase, around 10 lakes were restored at a cost of Rs. 5 crore. Work to restore 20 lakes taken up under the second phase is now in the final stages and is expected to be completed by December.

Most of the tanks taken up are spread over an area of 5-10 sq. km. and have the potential to irrigate several hectares of land. In many cases, farmers dependent on these water bodies for irrigation gave up cultivating, as getting water was becoming increasingly difficult, said the official.

A water body in Koovathur village, 15 km from Mamallapuram, was among those recently restored. A visit to the lake revealed that the leaky weirs and sluice gates had been repaired and an earthen bund has been put in place for nearly 1 km. Its capacity has also been improved to one thousand million cubic feet.

Dinakaran, a farmer in the area said the villagers here grow paddy, groundnut and millet and depend on the lake for their needs.

“We were unable to cultivate properly as the lake would not have enough water during the crop season, as water flows out through the leaky weirs. Now, the department has even constructed a field channel to distribute water to our lands,” he said.

The Hindu             27.11.2013

Rainwater harvesting in city to get fillip

The Chennai Corporation is planning to carry out re-engineering of rainwater harvesting facilities in the city’s water bodies spread over an area of 426 sq. km.

A meeting to discuss steps to be taken to improve rainwater harvesting, disaster preparedness, flood mitigation and drought relief in the city was held on Tuesday.

More than 100 water bodies in the city, excluding the 19 water bodies managed by the Water Resources Department, have been identified as having untapped potential for rainwater harvesting.

The Corporation is planning to implement re-engineering of structures, including stormwater drains, in the neighbourhood of small lakes and ponds maintained by it. The works are likely to include redesign of stormwater drains, landscaping, desilting and plugging of illegal sewer inlets.

The civic body has studied data from a survey of water bodies, which was completed by the Chennai Metropolitan Development Authority a few years ago.

“A senior official of the erstwhile Ambattur municipality initiated the preparation of estimates for rainwater harvesting in Mangal Eri. But it is yet to be implemented completely. The residents have been requesting the Corporation to implement the project. This will help improve the groundwater level in the neighbourhood,” said K. Neelakandan, councillor of ward 92.

The effort is expected to improve the level of disaster preparedness in the city by mitigating the problem of floods in vulnerable localities. The work would gain pace in the coming months and a complete disaster preparedness information system would be in place shortly, an official said.

According to civic body officials, the Water Resources Department and the Corporation will re-examine the condition of flood-affected areas. The agencies will also be evolving a plan to remove all obstacles for free flow of rainwater into water bodies.

The re-engineering of rainwater harvesting structures in temple tanks a few years ago has improved groundwater levels in areas such as Thiruvanmiyur.

The civic body is also planning to clear encroachments on water bodies that were identified recently. The re-engineering of the structures is expected to elicit protests from some residents who had allegedly constructed houses on encroached land, said an official of the Corporation.