River Bosna is the most important water flow in the Zenica area. Spring of the river Bosna in Ilidža, near Sarajevo, and mouth in the river Sava near Bosanski Šamac; thus, the river has a natural flow from south to the north, what is usually uncommon but characteristic for larger number of rivers in BiH. Out of a total of , which is the total length of the river Bosna, flows throughout the cityity. Along the river Bosna there are roads and railway built; also, most of the citizens is concentrated along river Bosna.