1. Water level in Mullaperiyar dam inches towards 142 ft; Chandy writes to Jayalalithaa

Water level in Mullaperiyar dam inches towards 142 ft; Chandy writes to Jayalalithaa

Water level in the Mullaperiyar dam is threatening to cross the permissible limit of 142 feet, leading to fears about the safety of the people living downstream from it in Kerala even as six spillway shutters were opened tonight to release excess water...

By: | Published: December 8, 2015 4:50 PM

Water level in the Mullaperiyar dam is threatening to cross the permissible limit of 142 feet, leading to fears about the safety of the people living downstream from it in Kerala even as six spillway shutters were opened tonight to release excess water.

The water level in the dam in Idukki district touched 141.8 feet this afternoon, district administration sources said.

Arrangements have been made to relocate people living in downstream areas of the dam to safer places in case the need so arises.

Earlier today, considering the urgency of the situation, Kerala Chief Minister Oommen Chandy shot off a letter to his Tamil Nadu counterpart J Jayalalithaa asking her to issue strict directions to her officials to start at once the discharge of water in a “controlled manner” and to increase withdrawal to the Vaigai reservoir in that state.

“The Kerala government is extremely concerned about the potential danger to people living in downstream areas of the Mullaperiyar dam by a sudden, emergent opening of spillway gates as also the submergence of forest land with wild animals.

“We reiterate that it is most dangerous to wait till the water level reaches 142 feet for the operation of spillway gates considering the meagre storage space and consequent danger to the downstream people,” he stated.

Revenue Minister Adoor Prakash said that the Idukki district administration has been given directions to take the necessary steps for the rehabilitation of families mainly from Vallakadavu to Vandiperiyar who will be affected immediately due to the discharge of water.

Around 229 families from Vellakadavu, Upputhura and Ayyappankovil have been identified and three shelters have been set up, the minister told PTI. Instructions have been given for setting up more shelters if necessary, he added.

To coordinate the functioning of various departments, deputy collector, chief forest officer, Idukki, along with the tehsildar have been asked to coordinate on the work of various departments, including revenue, Kerala State Electricity Board, fire and rescue and forests.

A control room has already been opened at Vallakadavu towards that end, he said.

The government today informed the state assembly that Chandy will take up the state’s concerns with Prime Minister Narendra Modi during his scheduled visit to Delhi later this week.

  1. M
    mohan
    Dec 9, 2015 at 3:50 am
    The Mullaperiyar Dam was constructed as a mechanism for diverting water, across the hill through a tunnel, to the other side of the mountain in TN. Hence it should not be used as a water reservoir. The temporary storage should be located on the other side of the mountain. The spillways to drain the excess water are at a height of 136 feet. Apart from this outlet, the tunnel to TN is the only other option for draining the water out of the dam. The flow rate through the tunnel can be increased by laying a conduit pipe. from the dam that runs continuously till the lowest point in TN side. The hydraulic head obtained from the height difference will increase flow rate. Higher flow rate implies more quany of water per second. Again by using the siphon technology, the dead storage level can be lowered by another 30 feet. The tunnel is located at a height of 104 feet. The pipe should start from a point in the reservoir at a height of 74 feet. Then it should be laid along the cutting for about a mile and then through the tunnel and later through another cutting on the other side into a natural ravine. This is an innovative and eco-friendly technology and it unsures faster discharge of water
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