Kupa River (Croatia)
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Kolpa (Kupa) | |
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Origin | Razloge, Gorski kotar, Croatia |
Mouth | Sava, Sisak, Croatia |
Basin countries | Croatia, Slovenia |
Length | 296 km |
Source elevation | 313 m |
Avg. discharge | 283 m³/s |
Basin area | 10,032 km² |
Kolpa (Croatian Kupa) is a river in Slovenia and Croatia.
Kolpa forms a natural boundary between Central Europe (Slovenia) and Balkans (Croatia) and has been a political frontier since the 12th century, separating Carniola (belonging to Austria) from Croatia (belonging to Hungary).
The Kolpa originates in the mountainous region of Gorski kotar, northeast of Rijeka, in the area of Risnjak National Park.It flows a few kilometers eastwards, receives the small river Čabranka from the left, before reaching the Slovenian border.
It then continues eastwards, receives influx from the river Lahinja from the left, passes Vrbovsko, and eventually detaches from the Slovenian border. It then reaches the city of Karlovac, where it receives influx from two other rivers from the right, Dobra and Korana (which in turn is joined by Mrežnica).
It continues flowing to the east, where it merges with Glina from the right as well as Odra from the left, and proceeds to the city of Sisak where it flows into the Sava.