Clipping of news on Brazilian Culture, Law and Citizenship
06/18/2014
This article was translated by an automatic translation system, and was therefore not reviewed by people.
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On Friday, the Cantareira (including tanks Equivalent System plus the Castro Paiva reservoir, the Upper Tietê), was storing 228 580 000 000 liters of água.Operação started to meet the needs of Greater São Paulo, the use of technical resources of the reservoirs has not benefited the PCJ Basin, which continues to receive only 3 m3/se failed so far guarantees that you can get more water if the worsening drought. Mayor Jonas Donizette (PSB) has been trying to get enough flow assurance in Atibaia River, Campinas, to supply the city. But the most we got was a recommendation of the anti-crisis committee, GTAG-Cantareira so that system managers, to assess the possibility of releasing more flow to the basin of Piracicaba. Jonas wants assurance 5m3 / s in the monitoring post of Atibaia in Valinhos. Below this volume, the city will face problems abastecimento.Para water resources expert, José Luiz Gaspar, the government was wrong to anticipate the use of technical resources, because if the rains do not come and occur over a dry summer, there will be no where draw water and the donor basin Cantareira the PCJ, will suffer much, because they do not have tanks. "The reservoir of the Campinas region is Cantareira. Greater São Paulo has reservoirs that should have been used since the beginning of the crisis, but sufficient volume could be maintained in Cantareira and thus meet the basic needs of the worsening crisis, "afirmou.A Sabesp made a prediction of water demand, forwarded to GTAG-Cantareira with three different scenarios. At first, the company estimates that if sent 3 m3 / s for Watershed PCJ and withdrawal of 21.2 m3 / s Equivalent System for the Greater São Paulo, plus the inflows equal to the historical minimum, Nov. 30 reservoirs have a remnant volume of 45 million meters cúbicos.Se average monthly inflows are equal to 75% of historic lows, the volumes available were exhausted on Nov. 26 and would require an additional volume of 4 million cubic meters to meet the demands to November 30. If the monthly average inflows are equal to 50% of historic lows, the volumes available were exhausted on October 27, an additional volume of 51 million cubic meters to meet projected demands up to 30 novembro.Retirada being necessary Sabesp expects delivery 182.5 billion gallons of water from the dead volume Cantareira system, with 105 billion liters of dam Jacarei in Joanópolis, and 78 billion liters of dam Atibainha in Nazaré Paulista. This water is in the tanks, but is below the tunnels that connect the dams and their withdrawal is only possible with pumps, a maneuver that had never been performed in Cantareira System. The primary mission is to ensure the supply of Greater São Paulo. The Jaguari and rivers receive water from the Atibaia killed by floodgates background on the system volume. In general, the accumulation of water occurs mainly in the rainy months, from October to March, guaranteeing supplies during the drought period. However, between October 2013 and February 2014 unusually low for this time natural flows have been observed, which contributed to the reservoirs will receive the volume of water esperado.A withdrawal operation of technical reserves is requiring investments of R $ 80 million . To capture two channels, totaling 3.5 km in length, and installing pumps in 17 dams and Atibainha JAGUARI Jacarei were constructed whose function is to remove the volume from the depths of the reservoirs and boost portion of the water present in this strategic reserve that it follows the normal flow in tunnels before reaching the treatment plant
Source: IG Paulista
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This article was translated by an automatic translation system, and was therefore not reviewed by people.