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Lakes

  • PWD set to infuse life into lakes

    Survey in progress to demarcate boundaries of waterbodies; encroachments to be removed SPRUCING UP: An earth-mover on the job around the Perungudi Lake recently as part of the lake rehabilitation project of the Public Works Department. CHENNAI: The Public Works Department (PWD) has geared up its efforts to remove encroachments from, and rehabilitate lakes in the fringes of the city as per the Tank Protection Act, 2007. Of the 19 lakes, demarcation of the boundaries and serving of eviction notices to encroachers have been completed for five lakes, including Ayapakkam and Korattur in Tiruvallur district. A PWD official said measures were under way to complete the work by May as per a Madras High Court directive. Survey is in progress to demarcate boundaries of waterbodies in places such as Ambattur, Tambaram, Nemilicheri, Peerkankaranai and Kadapperi in Tiruvallur and Kancheepuram districts. Notices issued Eviction notices have been served so far on about owners of 1,000 households who have allegedly encroached on the lake. The work with regard to eight waterbodies, including those at Zamin Pallavaram and Kovilambakkam, however, has been put on hold because cases are pending in the court pertaining to removal of encroached structures, the official said. On completion of the area demarcation and removal of encroachments, measures to rehabilitate the waterbodies would begin. The districts' administration has to decide on issues pertaining to provision of alternative sites, the official added. Another senior PWD official said that around Rs.3.6 crore had been allocated to execute rehabilitation work, including construction of retaining wall, at lakes in Velachery, Pallavaram and Perungudi. One of the lakes on which the PWD recently started rehabilitation work at the cost of Rs.97 lakh is the Perungudi eri, which has a 35-acre spread. It is being used by residents of nearby Kallukuttai for various purposes, including bathing, washing clothes, animals and vehicles. Rehabilitation work The rehabilitation work includes clearing of the bushes around the lake, levelling and strengthening of the 816 meter bund and fencing the lake. A compound wall is to be constructed to a height of three feet over which there would be chain link fencing. Desilting work has already been completed in the lake. Perungudi panchayat president K.P. Kandan said toilets would be constructed nearby to prevent people from dirtying the place. The water from the wells that line the lake was being used to supply drinking water by the panchayat. Efforts hailed B.Maximus of the Kurinji Nagar Residents Association, who welcomed the efforts of the PWD, said they planned to plant trees and make a walkway around the lake with benches. "As it is being fenced and the area around getting cleaned, we are now planning to approach IT companies for funds to beautify the lake,' he added.

  • Geochemistry of Renuka Lake and wetland sediments, Lesser Himalaya (India): implications for source-area weathering, provenance

    The geochemical investigation of sediments deposited in the Renuka Lake basin and its adjoining wetland has shown variation in the distribution and concentration of major, trace and REEs.

  • Participatory fisheries management revisited

    Participatory fisheries management (PFM), as widely understood in Malawi, is a governance type that entrenches participation of the user community in fish resource management. In PFM, the Department of Fisheries (DoF) and the fishing community are key partners who, in an ideal situation, agree on shared roles and responsibilities, and formulate the goals, objectives and strategies of a particular management regime.

  • How a catastrophic flood cooled Earth

    A Vast Lake Trapped Under Ice Sheet Drained Into The Sea, Bringing Down Temperatures Paris: Canadian geologists say they can shed light on how a vast lake, trapped under the ice sheet that once smothered much of North America, drained into the sea, an event that cooled Earth's climate for hundreds of years. During the last ice age, the Laurentide Ice Sheet once covered most of Canada and parts of the northern United States with a frozen crust that in some places was three kilometres thick. As the temperature gradually rose some 10,000 years ago, the ice receded, gouging out the hollows that would be called the Great Lakes. Beneath the ice's thinning surface, an extraordinary mass of water built up

  • A poison pill

    One thing Canada is not short of is lakes. It has so many that it can afford to set some aside to experiment on. And that is what Karen Kidd, an ecotoxicologist at the University of New Brunswick, has just done to a small lake in north-west Ontario. She has poisoned it in the name of science.

  • CDC criticised for delaying report on environmental health

    The US Centers for Disease Control has been accused of withholding data related to health risks in and around the Great Lakes area. But the agency says the report, pairing toxin concentrations with human health concerns, which was due out last year, had "deficiencies'.

  • Nal Sarovar boating routes fixed on lines of Gir forest

    Now, you may not have to shell out those extra bucks that boatmen demand in lieu of taking you deeper into Nal Sarovar to watch the winged visitors. The forest department has framed eight routes in this 120 sq km lake, on the lines of Gir sanctuary, where the boatmen would take the visitors. This will ensure that people do not end up paying more considering that the charges of boating at Nal Sarovar are per person per hour. Forest department officials said that it was noticed that a tourist would hire the boat for one hour and end up spending several hundred more because he would not be able to watch the birds. The officer said that earlier the boatman would row the boat slowly consuming more time and later he would ask for double the amount while in middle of the lake. "A person coming to watch the birds would agree to pay the rate, which is asked when he is in the lake and has not been able to watch the birds,' a forest department official said. After deliberations with the boatmen and their association, the eight routes to eight different islets inside the lake have been fixed. "The routes were fixed following the Gir Sanctuary where there were different routes and the tourist was asked to pick up the route.' said the officer. Deputy Conservator of Forest B D Modi said, "The routes were decided based on the maximum time they can take to reach a location. The timings of the route range from one hour to six hours and the tourists will chose the route and pay accordingly.' Modi said that to identify the spots, the forest department has also put marks and boards on the islets. There were boats put at Dhrabla bet, Sur Bet, Limsi Bet and others. He said that the sixhour route was the longest route. This route was from Nalsarovar entry point to Limsi bet, Sur bet, Panvad Bet, Dhrabla bet, Cholathali bet, Chera bet and back. This was the route which covered all the routes. He further said besides this routes there were rates being in the ratio of per person and per hour. This would help the tourist to choose there route according to their pockets and budgets. People at Nal Sarovar for a boat ride

  • A million trees to make the city greener

    Chandigarh, February 18 With an aim to plant over a million trees in the city this year, UT Administrator Gen S F Rodrigues (retd) today launched a plantation drive at Saketri village. He also released Green Chandigarh Action Plan ' 2008. Stating that Chandigarh has a green cover of 35.6 per cent, Rodrigues stressed on the need to make the city greener by planting maximum number of trees possible. The Green Action Plan released by the Administrator stated that during the year 2007-08, 14,9723 saplings were planted against the target of 10,9170 in the Union Territory.

  • Glaciers and glacial lakes: indicators of global climate change

    The impact of climate change on Himalayan glaciers is becoming apparent. Studies show that most valley glaciers are retreating. Vertical shifts of up to 100m have been recorded during the last

  • Wailing over a murdered lake: the Badha

    Badha lake at the periphery of Fazilka town has dried up. The Badha lake, with its fresh water source and green surroundings was the attraction for establishing the boating station at this place. Now that it was dried up and is likely to be never change with water from Sutlej.

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