Tamilnadu: Coimbatore-Rain brings copious inflow

Water overflows from Pilloor and Siruvani dams; those in PAP zone are full 

COIMBATORE: Torrential rain over the last few days has led to copious inflow in the Pilloor and Siruvani dams that provide drinking water to Coimbatore city and the suburbs. Heavy inflow filled up the reservoirs in the Parambikulam-Aliyar Project zone also.

On Sunday morning, there was a discharge of 3,000 cusecs from Pilloor Dam. It came down to 500 cusecs in the evening. People living along River Bhavani in Mettupalayam sub-division in the district were warned of a spate and asked to move to safer places.

RAIN EFFECT: Water overflowing from Siruvani Dam is good news for local bodies on the drinking water supply front.

RAIN EFFECT: Water overflowing from Siruvani Dam is good news for local bodies on the drinking water supply front.

Officials said Upper Bhavani recorded 120 mm rain till 8.30 a.m. on Sunday. If there was more heavy rain, the discharge from the dam would go up. Filled to its capacity of 1,568 million cubic feet, the dam provided hopes of a comfortable water supply in the city and suburbs.

Water was overflowing from the Siruvani Dam also – the other water source for one half of the city and suburbs west and south of it. Tamil Nadu Water Supply and Drainage Board Executive Engineer (Siruvani Division) P. Gopalakrishnan said this was the third time this year water overflowed from Siruvani Dam. “Two to three days of heavy rain led to yet another overflow,” he said. The dam recorded 122 rain.

Water overflowed from Sholayar Dam in the PAP zone. Heavy rain raised the storage to the full reservoir level of 160 ft on Saturday midnight. Now, the surplus water was going to Parambikulam reservoir. The water level was just a few inches from the full reservoir level of 72 ft.

The water level in Aliyar Dam stood at 117.90 as against the FRL of 120 ft. The water level in the other reservoirs were (with FRL in brackets): Amaravathy- 57.37 (90) and Thirumurthy – 33.15 (60).

Rainfall (in mm): Sholayar-99, Parambikulam-88, Aliyar-25, Upper Nirar-69, Lower Nirar-50, Upper Aliyar-2, Kadamparai-9, Pollachi-5, Thoonakadavu-98, Peruvaripallam-111, Makinampatty-9, Navamalai-2, Valparai-36 and Sarcarpathy-8.

Coimbatore Bureau – From THE HINDU

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Tamilnadu-Water overflows from Siruvani Dam again

COIMBATORE: Water overflowed from the Siruvani Dam on Saturday, lending a sense of comfort to the Coimbatore Corporation, three municipalities and about 10 wayside habitations that were dependent on the Siruvani scheme for drinking water.

This is the second time this year that the water is overflowing from the dam.

High hopes: With Siruvani Dam touching its full capacity there is hope of an end to the water woes.

High hopes: With Siruvani Dam touching its full capacity there is hope of an end to the water woes.

The first overflow was on July 18, following a 17-day torrential downpour in the catchments and copious inflow from the upper reaches of the Siruvani Hills.

The overflow stopped around the third week of August.

The local bodies and the Tamil Nadu Water Supply and Drainage Board were then reconciled to a wait till the North-East Monsoon in October for a top up over what the South West Monsoon had already provided.

Heavy rain

But, the latest spell of heavy rain in the catchments led to an unexpected second overflow.

Water board officials said the dam filled to its capacity of 650 million cubic feet and the overflow from the dam was likely to continue as there was continuous rain of 20 mm to 40 mm.

From THE HINDU