EntityQ1747947· pop 11· linked from 15 articlesPetrůvkaSign in to save31 km long river originating in Poland, flowing mostly through Karviná District, Moravian-Silesian Region, Czech RepublicConnectionsOlzaEntityPolandCountryCzech RepublicCountryPolishEntityBaltic SeaEntitygeographic coordinate systemEntityInternational Standard Book NumberEntityOderEntityriver mouthEntityMoravian-Silesian RegionEntityCieszynEntityKarviná DistrictEntityCieszyn CountyEntityPetrovice u KarvinéEntityCieszyn SilesiaEntityZebrzydowiceEntityHaźlachEntityKończyce MałeEntityKończyce WielkieEntityMarklowice GórneEntityCategoriesCieszyn SilesiaInternational rivers of EuropeKarviná DistrictRivers of PolandRivers of Silesian VoivodeshipRivers of the Moravian-Silesian RegionTributaries of the Olza