Kupa River

The fifth-longest river in Croatia is Kupa River. The river is a right tributary of the Sava that forms a natural border between north-west Croatia and southeast Slovenia. It is 297 kilometers (185 miles) long, with a border section of 118 kilometers (73 miles) and the remainder in Croatia.

The Kupa is one of the main rivers in Croatia, flowing between the White Carniola region in the north and Central Croatia in the south. It receives influx from the river Lahinja from the left in Primostek, passes Vrbovsko, and eventually detaches from the Slovenian border having passed Metlika. It continues eastwards until it reaches Karlovac, where it merges with Glina, then passes through two small towns called Šišinec and Brkiševina, and then proceeds to the town of Sisak where it joins the Sava River.

The upper Kupa, which is relatively unpolluted downstream to Karlovac, is a favorite summer bathing spot.

Length: 185 miles