Usina Hidrelétrica Eloy Chaves (submersa, Itapura)

In the 1940s, businessman Eloy Chaves started the Empresa Elétrica do Itapura to harness the Salto do Itapura and bring electricity to northwestern São Paulo state and southern Mato Grosso. The Eloy Chaves power plant was built at this falls, a large waterfall on the Tietê River. In the 1960s, the Engenheiro Souza Dias (Jupiá) Hydroelectric Plant flooded the town of Itapura. The four-story building of the old power plant was submerged by the construction of the Jupiá Hydroelectric Plant in 1968. Itapura lies at the mouth of the Tietê River, where it meets the Paraná River, in an area known as the Pantanal Paulista, and its name means "stone that emerges from the waters" in Tupi-Guarani.

Underwater, the structure has restricted areas, rooms, halls and the water channel leading out through the floodgates, and the spots visited include the staircase and the turbine area. In the old turbine area, in 2004 it was possible to enter through the building's windows and exit from above, since it had no roof. The fish most often seen are native and non-native species, among them piranhas and pacus.

At the mouth of the Tietê, in Itapura, diving conditions are usually good during the dry season, from mid-May to October.