The ravine Agirza, tributary waters his term of the Galindo in the limit with Sestao, whose waters feed two marshes, and the river Kadagua, which proceeding from Güeñes, raisin for Alonsotegi, marks the limit with Bilbao and pays his waters to laugh close to Lutxana.

The municipality is constituted by the electoral districts of Centro-Zaballa,
Desierto-Larrea, Rontegi, Bagaza-Santa Teresa-Beurko, San Vicente, Arteagabeitia-Zuazo, Retuerto-El Regato-Kareaga, Lutxana-Burtzeña-Llano and Crossings

Religious art. With an urban center that would be San Vicente of Barakaldo and an important district out of his action radio, Pool, the totality of the ancient brotherhoods that were forming municipality they have already happened it is to be part of the nucleus of what is, in the practice, one of the most important terms of everything her Basque autonomous region.

At present, and after the Alonsotegi desanexión, the majority of his population turns concerning an urban and industrial habitat that articulates all the administrative functions of an area that after industrial development of ends of the XIXth century and big part of the XXth lost an important part of his patrimony. (fte. to see the links)