Neisse

The Lusatian Neisse, or Western Neisse, is a 252-kilometre river in northern Central Europe. It rises in the Jizera Mountains, near Nová Ves nad Nisou, at the Czech border becoming the Polish–German border for its remaining 197 kilometres, to flow into the similarly northward-flowing Oder.
  • Countries: Czech Republic · Poland · Germany
  • Source: Jizera Mountains
  • Mouth: Oder
  • Length: 252 km (157 mi)
  • Basin size: 4,403 km² (1,700 sq mi)
  • Progression: Oder→ Baltic Sea
Data from: en.wikipedia.org