But the most popular explanation refers to three sisters who lived on the right bank of the river. This version talks of a couple who lived on the bank of the river who had triplets, a rare case even today. The story goes that their birth was a topic of subject of much discussion, with its fame spreading throughout the region. They were three beautiful girls all called Maria. But the waterfall where the couple lived with their three daughters began to be called the Waterfall of the Three Marias, which disappeared after the building of the dam. The legend adds that the three Marias died by drowning in the river. However, as there is no documentary evidence in any registrar to prove its veracity, the tale remains anecdotal. The less poetic, official name of the hydroelectric station is "Bernardo Mascarenhas".