Biała 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

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It is divided into 16 administrative provinces called voivodeships, covering an area of . Poland has a population of over 38 million and is the fifth-most populous ...

Podlaskie Voivodeship Podlaskie Voivodeship or Podlasie Province ( pl, Województwo podlaskie, ) is a voivodeship (province) in northeastern Poland. The name of the province and its territory correspond to the historic region of Podlachia. The capital and largest cit ...

, a left tributary of the

Supraśl River Supraśl (; be, Су́прасль; ) is a town and former episcopal see in north-eastern Poland. Supraśl is in Podlaskie Voivodeship (province) since 1999, previously in Białystok Voivodeship (1975-1998) (1975–1998), and is in Białystok Co ...

, with a length of 29.9 kilometres and a basin area of 119 km². Biała passes through

Białystok Białystok is the largest city in northeastern Poland and the capital of the Podlaskie Voivodeship. It is the tenth-largest city in Poland, second in terms of population density, and thirteenth in area. Białystok is located in the Białystok Up ...

from south to north-east.

Tributaries

Major tributaries of Biała are: * Dolistówka * Bażantarka Rivers of Podlaskie Voivodeship Rivers of Poland {{Poland-river-stub