The encounter of the waters is a natural phenomenon easily seen in many rivers of the Amazon. The factors for this occur in the region vary from geological, climatic, thermal issues or even the size or acidity of rivers. The most famous water gathering is located in front of the city of Manaus, between the rivers Negro and Solimões, being one of the main tourist attractions of the Amazonian capital. The phenomenon also occurs in other cities of Brazil, such as Santarém, Pará, and the Tapajós and Amazonas rivers, Tefé in the state of Amazonas, Tefé and Solimões rivers, and Tapauá, Amazonas. is seen in front of the city with the encounter of the Amazonian rivers of the Purus and Ipixuna, and in many other municipalities of the interior of the Brazilian Amazon, in addition to the international Amazon as in Iquitos, Peru, and other localities of the Hispanic Amazon.