Tamilnadu: Salem-New Lake remains dry despite heavy rain over past few weeks

Almost all channels that feed the water body are blocked with silt

SALEM: The New Lake, a major water spread in Kannankurichi area here, remains dry despite the city and its suburbs experiencing moderate to heavy rain for the past few weeks.

The reason: Almost all the channels that feed the lake – which has water spread area of over 100 acres – remain heavily silted.

The lake is an important water source for the farmers in the area.

No storage: The New Lake in Kannankurichi remains dry as the channels carrying water to the lake are full of silt. — Photo: P. Goutham

No storage: The New Lake in Kannankurichi remains dry as the channels carrying water to the lake are full of silt. — Photo: P. Goutham

It recharges hundreds of bore wells in and around the panchayat.

Ground water recharge

About 800 acres of lands are being irrigated through ground water recharge in the Kannankurichi panchayat alone.

“Earlier, the lake used to reach the full level and often surplus during heavy rains. Even after the district witnessed significant amount of rain, the lake has not received any water,” farmers point out.

The farmers had made repeated representations to the officials concerned to desilt the water-carrying channels. But no fruitful efforts had been made so far.

Desilt

Farmers urged the State government to initiate immediate efforts to desilt the water-carrying channels and remove the encroachments on them.

Staff Reporter – From THE HINDU

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Water: Harsh summer for north, west Bangalore

For the water storage level, that increases annually during the months of August, September and October, has dropped drastically. The storage capacity of the reservoir, located in the downstream of Hesarghatta lake, is 74 feet but the level was hovering at a mere 28 feet, nine inches feet on Saturday. “The month of August is over and half of September too has gone. There has been no appreciable increase in the storage levels. It is during these two months and October that the reservoir’s levels shoot up,” said  a top official.

The areas in Rajaji Nagar, Kamala Nagar, West of Chord Road, Vijayanagar, Nagarbhavi and parts of Yelahanka will bear the brunt of the decreased levels in the reservoir, during the coming summer, he added.

The reasons are not far to seek; absence of rains in the catchment areas of Nelamangala, Doddaballapur, Sivaganga and Nandi Hills. “The last three days have shown a minor improvement but that is just not enough,” the official said.

While the increase in water level is usually 500 million cubic feet (mcft) during each of these three months in the preceding years, the level has gone up by a mere 20 mcft for the month of August, this year.

“The inflow into the reservoir is very poor this time. The annual increase that ranges between 1,500 mcft to 2,000 mcft appears to be a distant prospect this time around. Even last year, it had increased well above 1,500 mcft by the end of October,” he informed.

The year 2008 was a good year for the reservoir as the water had touched a four-year high of 40-feet in October that time, thanks to copious rains. The reservoir, located 35 kms from the City towards Magadi, supplies 70 million litres of water to Bangalore on a daily basis. This is a crucial supplement to the 810 million litres of Cauvery water supplied daily by the Thoraikkadanahalli reservoir. TG Halli mainly caters to the needs of northern and western parts of Bangalore.

Inaugurated in the year 1933, the reservoir is located at the confluence of the Arkavathi and Kumudvathi rivers. It used to be the only source of water supply to the City during that era.

From Deccan Herald

Water Scarcity and the Role of Storage in Development

Under all but the most optimistic scenarios, there is a dearth of freshwater storage.

If climate change as a result of global warming manifests, the need for freshwater storage will become even more acute. Increasing storage through a combination of groundwater and large and small surface water facilities is critical to meeting the water of the twenty-first century.

This is especially so in monsoonal Asia and the developing countries in the tropics and semitropics. As an immediate first step, we must assess the major river basins of the world, whether they are open, closed or semi-closed.

The productivity of water as presently used must also be assessed to determine the extent to which increased demands for irrigated agricultural production can be met by increasing water productivity, and the extent to which increased demands will require increased consumption of water.

The uncommitted discharges from those basins that are open or semi-closed must then be determined, and plans made to effectively capture and put this water to use.

Combinations of small and large storage and surface water and groundwater recharge are generally the best systems where they are feasible. In monsoonal Asia, research and development are needed on how to manage water under monsoonal conditions.

For More Information

Research Report by Andrew Keller R. Sakthivadivel and David Seckler