Two sources of the river are located on the north-east slopes of the Klimczok mountain in the Silesian Beskids on the elevation of around 1020 and 900 m. The upper part the river, known as Białka (diminutive form of Biała), has characteristics of a mountain stream. The first settlement it runs through is the village of Bystra. Before Mikuszowice it joins with Biała stream beginning on eastern slopes of Magura mountain in Little Beskids, then the river veers north and on the length of 15.7 km (9.8 mi) it forms a pivotal line of the city of Bielsko-Biała, afterward it flows in between Czechowice-Dziedzice to the west and Gmina Bestwina to the east, and empties to Vistula River on the elevation of 240 m.
^ abcdPanic, Idzi, ed. (2011). "Środowisko geograficzne. Wody powierzchniowe i podziemne". Bielsko-Biała. Monografia miasta [A Written Account of Bielsko-Biała] (in Polish). Tom I: Bielsko od zarania do wybuchu wojen śląskich. Bielsko-Biała: Wydział Kultury i Sztuki Urzędu Miejskiego w Bielsku-Białej. p. 57. ISBN978-83-60136-31-7.