Tamil Nadu reduces Periyar water flow to nominal level


Tamil Nadu reduced the water discharge in the Periyar to a nominal level on Tuesday evening following a drop in the water level at the Mullaperiyar dam.

Weir flaps 1, 5 and 6 of the dam are closed in the morning, flaps 2, 3 and 5 remaining open at 50 cm. Water flow was 453 cusecs in the morning, then reduced to 158 cusecs Tuesday at 5 p.m., with only one shutter remaining open. The water level at 5 p.m. was 138.10 feet and the tunnel flow was 2,305 cusecs.

Panel visit

The five-member subcommittee of the Supreme Court-appointed Oversight Committee visited the dam on Tuesday. The sub-committee is comprised of Central Water Commission Executive Engineer Saravanakumar, Kerala Water Resources Department Engineers NS Praseed and Harikumar (representing the state) and Public Works Department Engineers of the Tamil Nadu Sam Irvin and Kumar (representing Tamil Nadu).

The committee inspected the main dam, the baby dam and the spillway. The subcommittee will hold a virtual meeting on Wednesday, following which it will submit a report to the oversight committee.

Fire and Rescue Chief B. Sandhya also visited the dam. She said it was recommended to the government to set up a fire station in Mullaperiyar area.

Meanwhile, the water level in the Idukki Reservoir downstream of the Mullaperiyar Dam dropped to 2,398.26ft on Tuesday. Power generation at Moolamattom power station on Monday was at peak output of 17,360 mu.

According to the new ruler curve for Idukki Dam, the red alert level is 2,398.79 feet and the upper ruler level is 2,399.79 feet. There was 94.44% water storage in the dam. The rainfall recorded in the watershed was 1.4 mm.

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