Posts Tagged drainage

Tamil Nadu TWAD Parts of Madurai district to get Cauvery water

Parts of Madurai district, including Melur and Thirumangalam, are to get Cauvery water when the Tamil Nadu Water Supply and Drainage (TWAD) Board’s drinking water supply project, estimated to cost Rs.586 crore, is operational.

Under the project, 81 million litres a day (MLD) will be supplied to three municipalities, six town panchayats and 1,431 rural habitations in Madurai district and one town panchayat of Sivaganga district.

Avaniapuram is one of the municipalities to be covered, a board official says, adding that the limits of the Madurai Municipal Corporation will not be served.

Present plan

As per the present plan, Cauvery water will be tapped from near Mettu Mahadanapuram upstream of Kulithalai. The total length of water conveyance line will be 380 km from the source point. Sub-surface water will be drawn by digging three collector wells.

As many as 100 board officials have been deployed for the project.

The official says that the project report will be ready by the month-end.

Originally, the project was to cover three municipalities, four town panchayats and 155 rural habitations. At that time, the cost of supplying water worked out to around Rs.37 per kilo litre.

As the government considered it to be high, the board was directed to come up with an alternative plan that would bring down the cost. Under the revised plan, the cost comes to approximately Rs.17 per KL.

The official explains that initially the board considered tapping water from the Vaigai dam. As this source was not regarded as sustainable, the TWAD Board decided to bring Cauvery water to Madurai district.

Areas to be covered

At present, the areas to be covered under the project are using local sources. By extending Cauvery water, the service level in rural habitations will go up to 40 litres per capita per day (LPCD); 90 LPCD in urban local bodies and 135 LPCD in municipalities where underground sewer schemes have been envisaged.

As regards urban local bodies (ULBs), funds will be drawn through the Urban Infrastructure Development Scheme for Small and Medium Towns (UIDSSMT), which broadly comes under the Jawaharlal Nehru National Urban Renewal Mission (JNNURM).

As for the rural habitations, the cost of the project will be met through the Minimum Needs Programme. The Union Ministry of Urban Development has already given the approval in principle for Rs.258 crore.

The official says the remaining amount will be provided by the State government.

Asked whether the latest drinking water supply project, using the Cauvery as the source, will have any adverse effect on farmers for agriculture, the TWAD Board official replies in the negative and adds that the quantum of water to be drawn for the Madurai district project will not even be one thousand million cubic feet (tmcft) – to be precise, 0.98 (rpt: 0.98) tmcft.

As of now, 29.37 tmcft of Cauvery water is used for all the drinking water projects.

This includes the recently-commissioned Ramanathapuram combined water supply project, which requires 1.2 tmcft. The proposed Hogenakkal and Vellore water supply projects envisage 1.3 tmc ft each,

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Recent rain, several roads, particularly in the interior areas, have been damaged, making it very difficult for motorists.

Driving on roads after rain continues to be a nightmare for motorists. A damaged stretched in Royapuram.

The northeast monsoon, a boon for the city, continues to be a bane for city roads. Following the recent rain, several roads, particularly in the interior areas, have been damaged, making it very difficult for motorists.

What is it that makes some roads more vulnerable than others? Is it about quality or poor maintenance? The intervention by the Chennai Corporation is expected to make roads better, but the long wait of motorists for roads that are capable of enduring the test of the monsoon is bothering many of them .

“People who ride motorcycles are the worst affected. Bad roads are responsible for more strain on the spinal cord with long-term health risks. It also affects the vehicle,” said A.Rajan, a resident of Nungambakkam, who uses a two-wheeler to commute to his bank in Parrys.

However, there was no water logging in the subway near Loyola College this year, he said. “Similar efforts have to be taken by the civic body to make the road surface smoother.”

Mu.Mohan, one of the contractors of the Chennai Corporation said, “If the civic body ensures service ducts in all roads, we are ready to guarantee a smooth, pothole-free road for five-years.”

Contractors of the damaged road are asked by the civic body to rectify the defects in a week’s time. If they fail to execute the work, they are disqualified from being part of the list of more than 400 contractors, he said.

According to experts, focus on monitoring of minor aspects such as avoiding overheating of bitumen to lay roads easily, removal of encroachments on roads, provision of surface drainage and use of quality and unadulterated mix for roads would improve conditions. Eliminating the basic flaws in road laying would help, he says.

S.Pandian, president, Paver Finishing Road Builders’ Association, said road specification had not been changed in proportion to the rise in the number of vehicles. During rain, when vehicles move slowly due to water stagnation, there is further pressure on roads, leading to more damage. Earlier, the top layer of the road was 40-mm thick. It has now been reduced to 25 mm. Similarly, the layer below, made of bigger blue metal stones, was 70-mm thick and has been reduced to 50 mm.

I.V. Sashi Kumar, secretary of Exnora Club of Anna Nagar, said several roads dug up by Metrowater in Anna Nagar were neither re-laid nor filled up properly after completion of work. Proper care should be taken while digging up roads and officials and workers should be made accountable for faulty work, he said.

J.Balaji, a resident of Thiru Vi Ka Nagar, asked when roads such as Rajaji Salai and Kamarajar Salai last long, why other roads in the city are not laid well. “There are some stretches, especially in north Chennai, that remain bad throughout the year. These could be made concrete to prevent frequent relaying,” he said.

A road expert, who did not want to be named, said that using building debris for filling pot holes was not in the list of approved filling materials. Either red earth or hot mix must be used, he said.

Lalitha of Santhome said a large number of roads, including 5th Avenue Anna Nagar, Spurtank Road, L.B. Road, Greenways Road, 2nd Avenue Besant Nagar, Pantheon Road, Tiruvottiyur High Road and S N Chetty Road in north Chennai and CTH Road, were in bad shape this year.

“If the authorities concerned had ensured that storm water drains were desilted before, rainwater would not have stagnated,” she said.

Chennai Corporation Commissioner Rajesh Lakhoni said damaged road surfaces were being scrapped so that movement of vehicles would not be impeded much. Cold milling would help reduce the cost of relaying roads. “We have identified 28 very bad stretches of 50–100 metres that need attention. We are now planning to include the rule that the contractor, who laid the road, has to maintain it for one year. If potholes are formed after the rain they will be asked to restore the road from their own funds

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