The Biela (German name) or Bělá or Ostrovská Bělá (Czech names) is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

in eastern

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

and northern

Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...

, a left tributary of the

Elbe The Elbe (; cs, Labe ; nds, Ilv or ''Elv''; Upper and dsb, Łobjo) is one of the major rivers of Central Europe. It rises in the Giant Mountains of the northern Czech Republic before traversing much of Bohemia (western half of the Czech Repu ...

. The source is near Ostrov hamlet in the municipality of

Tisá Tisá (german: Tyssa) is a municipality and village in Ústí nad Labem District in the Ústí nad Labem Region of the Czech Republic. It has about 1,000 inhabitants. Etymology The name is derived from the Proto-Slavic word ''tes'' and the Czech w ...

, in the

Bohemian Switzerland Bohemian Switzerland ( cs, České Švýcarsko; german: Böhmische Schweiz), also known as Czech Switzerland, is a picturesque region in the north-western Czech Republic. It has been a protected area (as Elbe Sandstone Mountains Protected Landscap ...

, northwest of

Děčín Děčín (; german: Tetschen, 1942–1945: ''Tetschen–Bodenbach'') is a city in the Ústí nad Labem Region of the Czech Republic. It has about 47,000 inhabitants. It is the 7th largest municipality in the country by area. Administrative parts D ...

. After a few km it crosses into

Saxony Saxony (german: Sachsen ; Upper Saxon: ''Saggsn''; hsb, Sakska), officially the Free State of Saxony (german: Freistaat Sachsen, links=no ; Upper Saxon: ''Freischdaad Saggsn''; hsb, Swobodny stat Sakska, links=no), is a landlocked state of ...

(and the

Saxon Switzerland Saxon Switzerland (german: Sächsische Schweiz) is a hilly climbing area and national park around the Elbe valley south-east of Dresden in Saxony, Germany. Together with the Bohemian Switzerland in the Czech Republic it forms the Elbe Sands ...

). The town Königstein is located at the confluence of the Biela with the

See also