title: Petrůvka (river)
text: # Petrůvka (river)
  
  Petrůvka (help·info) (Polish: Piotrówka) 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 (part of Petrovice u Karviné).
  
  It begins in vicinity of Cieszyn (Pastwiska) 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.
  
  