Lusatian Neisse (Polish Nysa Łużycka, German Lausitzer Neiße, Czech Lužická Nisa) - length: ca. 225 km or 140 miles on the Polish - German border. Rising in the NW of the Czech Republic it flows into the Oder near Gubin in Poland.
Nysa Kłodzka - length: ca. 244 km or 159 miles. It rises in SW Poland to join the Odra near Brzeg.
Nysa Szalona - length ca. 51 km, flows into Kaczawa river, which in turns flows into Odra.
Nysa is also a town in Poland, on the Nysa Klodzka river.