itaipu ·
Itaipu opens spillway gates to control reservoir level
Marco Três newsroom · edited by Annie GrellmannUpdated on EspañolPortuguês
Rainfall increases flow in rivers feeding the dam
Itaipu Binacional opened the spillway gates on Sunday, September 13, at 1:50 a.m., to regulate the reservoir level following rainfall in the hydrographic basin of the Foz do Iguaçu region, in Paraná, Brazil. The structure will remain open until hydrological conditions permit its closure.
The opening of the left spillway gate released a flow of 1,735 cubic meters per second. The measure was necessary due to the increase in water inflows recorded in rivers that flow directly into the power plant's reservoir, as reported by Itaipu Binacional.
According to the entity, the operation follows standard procedures for reservoir control and regulation, without compromising energy supply to Paraguay and Brazil. Itaipu emphasized that it operates as a "run-of-river" power plant, a characteristic that implies relatively reduced storage capacity compared to other large hydroelectric facilities, requiring permanent monitoring of flow variations.
Itaipu recommended that the population and interested sectors consult official information about the evolution of Paraná River levels downstream of the power plant. Updated data are available in the Hydrological Bulletin on the binational entity's official website.
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