The Kupa (Croatian pronunciation:[kûpa]) or Kolpa (Slovene pronunciation:[ˈkóːlpa] or [ˈkóːwpa]; from Latin: Colapis in Roman times; Hungarian: Kulpa) river, a right tributary of the Sava, forms a natural border between north-west Croatia and southeast Slovenia. It is 297 kilometres (185 miles) long,[2] with a length of 118km (73mi) serving as the border between Croatia and Slovenia[1] and the rest located in Croatia.[4]
Etymology
The name Colapis, recorded in antiquity, is presumed to have come from the Proto-Indo-European roots *quel- 'turn, meander' and *ap- 'water', meaning 'meandering water'. An alternative interpretation is *(s)kel-/*skul- 'shiny, bright', meaning 'clear river'.[5]
The Kupa originates in Croatia 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 Čabranka River from the left, from which point it forms the Slovenian border.
It then continues eastwards between the White Carniola region in the north and Central Croatia in the south. The Kupa receives influx from the river Lahinja from the left in Primostek, passes Vrbovsko, and eventually detaches from the Slovenian border having passed Metlika.
It then reaches the city of Karlovac, where it receives influx from two other rivers from the right, the Dobra and Korana (which in turn is joined by the Mrežnica). The Kupa continues flowing to the east, where it merges with the Glina from the right. It then passes through two small towns called Šišinec and Brkiševina, and then proceeds to the town of Sisak where it merges with the Odra from the left and, after passing through Sisak town centre, flows into the Sava.
Pollution
Fairly unpolluted downstream to Karlovac, the upper Kupa is a popular place for bathing in summer. The section from Stari Trg down to Fučkovci since 2006 is part of the Slovenian Krajinski park Kolpa nature reserve.
Leksikografski zavod Miroslav Krleža (2013–2024). "Kupa". Hrvatska enciklopedija (onlineed.). Archived from the original on 2023-12-27.
Hirc, Dragutin (1898) [written 1898-02-08]. "Na izvoru rieke Kupe". Gorski kotar: slike, opisi i putopisi. Illustrated by Václav Lev Anderle. Zagreb: 🖶 Lavoslav Hartman (Kugli i Deutsch). pp.49–59. Republished as Hirc, Dragutin (1993) [written 1898-02-08]. "Na izvoru rieke Kupe". Gorski kotar: slike, opisi i putopisi. Illustrated by Václav Lev Anderle. Rijeka: 🖶 Tiskara Rijeka. pp.49–59. ISBN953-158-004-9.
Biology
Jakšić, Goran; Piria, Marina; Bočić, Neven (2024-09-18). "Identifying a Self-Sustaining Population, Spawning Site and Population Size of the Danube Salmon Hucho hucho Using the Citizen Science Approach". Aquatic Conservation: Marine and Freshwater Ecosystems. 34 (9). doi:10.1002/aqc.4253. eISSN1099-0755.
Babić, Marko (1985). "Sliv rijeke Kupe traži zaštitu"[The Basin of the River Kupa Seeks Protection]. Priroda: popularni časopis hrvatskog prirodoslovnog društva. Vol.72, no.8. p.242. ISSN0351-0662.
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