After seven months, Itaipu spillway is opened to control reservoir level

After seven months, Itaipu spillway is opened after rains raise reservoir level The Itaipu Dam spillway was opened at 7:30 a.m. this Sunday (28), for the first time in seven months, to control the reservoir level after rains increased the water volume. The last time the spillway was opened to control the reservoir level was on November 23, 2025. According to Itaipu Binacional, the reservoir reached the elevation of 220.36 meters, close to the maximum operating limit of 220.50 meters above sea level. ✅ Follow g1 Foz do Iguaçu on WhatsApp The opening was scheduled because, in addition to the rise in level caused by the rains, electrical system conditions prevented reservoir control solely through increased power generation. Spillway opens seven months after last opening Andrés Zarate/Itaipu Binacional At this moment, only the left chute of the spillway is open, with a flow rate of 1,450 cubic meters per second, according to Itaipu. The plant reported that the spillway will remain in operation until it is possible to control the reservoir level again through increased power generation. Itaipu emphasized that the opening does not affect energy supply and that the plant continues to meet the demand of Brazil and Paraguay normally. The hydroelectric plant is of the run-of-the-river type, with a low-storage capacity reservoir. Also read: Femicide: After claiming his wife committed suicide, reserve military officer is arrested on suspicion of femicide Scam: Fake lawyer asks for money to release elderly person's 'compensation' and victim loses R$ 750 thousand Investigation: 'Everyone who opposed him was threatened,' says prosecutor about doctor who set up an 'apartment' in hospital VIDEOS: Most watched on g1 Paraná Read more news on g1 West and Southwest.