Przemsza

The Przemsza () is a river in the south of Poland, and a tributary of the Vistula. According to one view, it originates at the confluence of the Black () Przemsza and White (Biała) Przemsza, between the towns of Mysłowice and Jaworzno. For about it flows southwards to its Vistula mouth at (a district of Bieruń). Another view places its beginning at the source of the Black Przemsza, giving it the length of 88 kilometers.

The Przemsza is one of the most polluted rivers of Poland. It carries industrial waste from the Upper Silesia and Zagłębie Dąbrowskie Coal Basin, and its water is regarded as dead. Furthermore, due to high level of pollution, the Przemsza does not freeze over in winter. Among the towns located along the Przemsza are Dąbrowa Górnicza, Mysłowice, Jaworzno, Chełmek, and Jęzor, a district of Sosnowiec. The Przemsza has been used for water transport since the mid-18th century. By the mid-19th century, it emerged as one of the most important waterways of the region. Large flat-bottomed rowing boats, called , were used to transport goods on the Przemsza to the Vistula. One galar took up to 70 tons of coal or stone from quarries at Jeleń or Dziećkowice. In June 1926, the Piast Mine from Lędziny began mass water transportation of its coal, using a specially constructed port, located at the village of Chełm Mały. Other mines followed Piast, opening their own loading facilities. By 1937, there were eight such facilities along the Przemsza. The government of the Second Polish Republic had far-reaching plans for the river. A river port at (a district of Sosnowiec) was to be built, a Mysłowice - Spytkowice - Kraków canal, and a waterway to the Baltic Sea. The outbreak of World War II terminated these plans.