Arraias River (Tocantins) From Wikipedia, the free encyclopedia River in BrazilCountryBrazillocationTocantins stateArraias RiverLocationCountryBrazilPhysical characteristicsSource • locationTocantins state The Arraias River is a river of Tocantins state in central Brazil. List of rivers of Tocantins References Brazilian Ministry of Transport This article related to a river in Tocantins, Brazil is a stub. You can help Wikipedia by expanding it.vte Related Articles