After three days of pouring, the Itaipu plant closed the floodwalls on Monday, 19. The delivery came to an end at 19h30 (Brazilian summer time). On Sunday, 18, the plant reached 4.589 cubic meters of water per second, equivalent to more than three times the normal volume of waterfalls of Iguaçu, which ranges from 1.200 to 1.500 cubic meters of water per second. This flow occurred between 10h and 13h on Sunday.
The plant opened on Friday, 16, the spillway because of surplus unused water for the generation. Under normal conditions, this occurs when the operating quota goes from 220,30 meters up at the sea level. The measure is for operational control.
The reservoir is in contrast to most of the country's regions because it receives rainfall from the Paranapanema Basin and also precipitation over rivers such as Ivaí and Piquirí, which directly feed the lake of Itaipu.
At dawn on Tuesday, Itaipu stopped pouring for two hours, between midnight and 2h, but reopened and continued pouring until 11h. During the pouring, one of the three gutters, the left, with six locks, remained open. Itaipu continues to operate normally and meeting the demand demanded by the Brazilian and Paraguayan electric systems.
The pouring means the flow of water not used for the generation of energy. The show takes place without damage to the generation of energy, since the plant is producing everything that the sector asks If it were possible, water would be saved.
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