Una (Sava)

Una
Una (view from Brekovica towards Bihać)
Country	Croatia, Bosnia and Herzegovina
Basin
Main source	Stražbenica mountain, Croatia
River mouth	Jasenovac, Croatia
Physical characteristics
Length	212 km (132 mi)

The Una is a river in Croatia and Bosnia and Herzegovina. The river has a total length of 212 km (132 mi) and watershed area of 9,368 km² (3,617 sq mi). Una river got its name from Romans who first discovered this beautiful gem of nature. The Romans found its beauty so unique that they named it the One (Una).

The source of the Una is the Una spring, also known as Vrelo Une, and is located on the north-eastern slopes of the Stražbenica mountain in Lika region, Croatia. After 4 km the river reaches Bosnia and Herzegovina at the confluence with the Krka River. From here the Una river forms a natural border between Croatia and Bosnia for the next 8.5 km until it reaches the rail bridge 1.5 km before the Bosnian town of Martin Brod. From the rail bridge the Una enters Bosnia completely and flows for 21 km, before reaching the border between the two countries for the second time, 9 km downstream town of Kulen Vakuf. From here it forms the border for the next 20 km, all the way to another rail bridge between the villages of Malo Seoce and Užljebić. Here the Una enters Bosnia completely for the second time, and near Ripač it winds more north-westwards, entering Bihać, and turning north to Bosanska Krupa and Bosanska Otoka. After 85 km of flowing through Bosnia, the Una again marks the border between Bosnia and Herzegovina and Croatia for the third and final time, near the villages of Dobretin and Javornik (Croatia). It maintaining that status for the rest of its course until confluence with the Sava. At this stage, the Una passes by the Bosnian towns of Bosanski Novi (Novi Grad), Bosanska Kostajnica, Bosanska Dubica, and Croatian towns of Dvor, Hrvatska Kostajnica, Hrvatska Dubica. It spills into the Sava River near small town of Jasenovac.