Ljubljanica

The Ljubljanica, known in the Middle Ages as the Sava, is a river in the southern part of the Ljubljana Basin in Slovenia. The capital of Slovenia, Ljubljana, lies on the river. The Ljubljanica rises south of the town of Vrhnika and flows into the Sava River about 10 kilometres downstream from Ljubljana. Its largest affluent is the Mali Graben Canal. Including its source affluent the Little Ljubljanica, the river is 41 km in length. The Little Ljubljanica joins the Big Ljubljanica after 1,300 m and the river continues its course as the Ljubljanica.
The Ljubljanica is the continuation of several karst rivers that flow from the Prezid Karst Field to Vrhnika on the surface and underground in caves, and so the river is poetically said to have seven names: Trbuhovica, Obrh, Stržen, Rak, Pivka, Unica, and Ljubljanica.