Petrůvka (river)


is a 31 km long river originating in Poland but flowing mostly through Karviná District, Moravian-Silesian Region, Czech Republic. It is the right tributary of the Olza River, to which it enters in Závada.
It begins in vicinity of Cieszyn and then flows north through Hażlach, Kończyce Wielkie, Kończyce Małe, Zebrzydowice, where it veers west towards Marklowice Górne, Dolní Marklovice, Petrovice u Karviné and Závada.