Olza River

Olza
Winter in Český Těšín. Olza River as seen from the bridge connecting Český Těšín and Cieszyn.
Origin	Silesian Beskids, Cieszyn Silesia
Mouth	Oder River
Basin countries	Poland, Czech Republic
Length	99 km (16 km in Poland, 83 km in the Czech Republic) ^[1]
Avg. discharge	10 m³/s near estuary ^[1]
Basin area	1 118 km² (479 km² in Poland) ^[1]

Olza (Czech: Olše or Olza^[2], German: Olsa) is a river in Poland and the Czech Republic, right tributary of Oder River. It flows from Silesian Beskids through southern Poland and Frýdek-Místek and Karviná districts in the Czech Republic, often forming the border with Poland. It flows to Oder River north of Bohumín. Confluence of Olza and Oder forms also a border.

It is a symbol of Zaolzie region. Unofficial anthem of local Poles, Płyniesz Olzo po dolinie is centered around the river.

[edit] Towns and villages on the river

(from source to the mouth)

^ ^a ^b ^c Cicha et al 2000, 18.
^ Local Czechs use the name Olza. Olše is an official name used by the government and Czechs from other parts of the country. (Cicha et al 2000, 21.)

Cicha, Irena; Kazimierz Jaworski, Bronisław Ondraszek, Barbara Stalmach and Jan Stalmach (2000). Olza od pramene po ujście. Český Těšín: Region Silesia. ISBN 80-238-6081-X.

History of Cieszyn and Těšín
Cieszyn \| Olza \| Český Těšín
Duchy of Cieszyn \| Silesia \| Upper Silesia \| Austrian Silesia \| Czech Silesia \| Cieszyn Silesia \| Zaolzie