Fidalgo River River in BrazilFidalgo RiverLocationCountryBrazilPhysical characteristicsSource • locationPiauí state The Fidalgo River is a river of Piauí state in northeastern Brazil. See also[edit] List of rivers of Piauí References[edit] Brazilian Ministry of Transport[dead link] 7°28′S 42°32′W / 7.467°S 42.533°W / -7.467; -42.533 This article related to a river in Piauí, Brazil is a stub. You can help Wikipedia by expanding it.vte