The Una River is a river of

Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a b ...

state in southeastern

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

. The river born of Araruama lagoon. It flows through fields north of

Tamoios A subdivision of the Tupi-Guarani linguistic families, the Tupi people were one of the largest groups of indigenous Brazilians before its colonization. Scholars believe that while they first settled in the Amazon rainforest, from about 2,900 ...

and

São Pedro da Aldeia São Pedro da Aldeia () is a municipality in Brazil. Its population was 106,049 (2020) and its area is 340 km2.IBGE /ref> Geography It lies in the east of Rio de Janeiro (state), Rio de Janeiro State on the Araruama Lagoon, 120 km from ...

in the Baixadas mesoregion before it discharges into the

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

References

Brazilian Ministry of Transport
Rivers of Rio de Janeiro (state) {{RiodeJaneiro-river-stub

See also

References