Yacyreta Dam

Yacyretá-Apipé (or just Yacyretá, often Yaciretá) is a hydroelectric dam located on the Paraná River between Argentina and Paraguay, 83 kilometers downstream of Posadas City, next to Paraguayan city of Ayolas, and Argentine city of Ituzaingó, Corrientes Province. It was named after the Yacyretá Island (Guaraní: jasy “moon”, reta “country”), now 80% covered by the waters of the reservoir, and the Apipé islands, now completely covered.

The dam is 808 metres long and has 20 turbines with a power of 4 050 MW that can produce 19 080 GWh per annum, with maximum water flow of 55 000 Cubic metres per second. There is a canal lock to let ships through the dam overcoming the 25 metre water difference, as well as a system to allow fish to go upstream during their reproductive season.