Una (Sava)

The Una is a river in Croatia and Bosnia and Herzegovina. The river has a total length of and watershed area of .

Geography

The Una spring, also known as Vrelo Une, is located at the north-eastern slopes of the Stražbenica mountain in Croatia. After the river first reaches Bosnia and Herzegovina. It flows through towns and villages of Martin Brod and Kulen Vakuf, in a region where it crosses the border between the two countries several times. Near Ripač it winds into Bosnia, entering Bihać, turning west on to Bosanska Krupa and Bosanska Otoka. Near the villages of Dobretin and Javornik it becomes the border between Croatia and Bosnia. It then passes by Bosanski Novi (Novi Grad), Dvor, Hrvatska Kostajnica, Bosanska Kostajnica, Hrvatska Dubica, Bosanska Dubica. It flows into the river Sava near small town of Jasenovac.

The Una is a right tributary of the Sava river and the main tributaries are the Unac, the Sana, the Klokot and the Krušnica. The hydrological parameters of Una are regularly monitored in Croatia at Kostajnica.

Flora and fauna

Over 170 types of medicinal herbs grow by the Una River; a rare plant called Campanula unensis, the Una Bluebell, was named after the Una river's bright turquoise and green colors. 28 kinds of fish live in this river and the biggest of which is the huchen (mladica, scientific name: Hucho hucho).

Regatta

There is also an annual event held on the river,...
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