Kupa

Kupa / Kolpa
River valley from Kozice
Kupa River watershed (interactive map)
Location
Countries	Croatia Slovenia
Physical characteristics
Source
• location	Razloge, Gorski kotar, Croatia
• coordinates	45°29′28″N 14°41′20″E / 45.491°N 14.689°E / 45.491; 14.689
• elevation	313 metres (1,027 ft) [1]
Mouth
• location	Sava, Sisak, Croatia
• coordinates	45°27′36″N 16°24′08″E / 45.46000°N 16.40222°E / 45.46000; 16.40222
Length	297.4 km (185 mi) [2][3]
Basin size	10,226 km2 (3,948 sq mi) [2]
Discharge
• average	283 m3/s (10,000 cu ft/s)
Basin features
Progression	Sava→ Danube→ Black Sea

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 118 km (73 mi) serving as the border between Croatia and Slovenia^[1] and the rest located in Croatia.^[4]

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, before reaching 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, Dobra and Korana (which in turn is joined by Mrežnica). The Kupa continues flowing to the east, where it merges with 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 Odra from the left and, after passing through Sisak town centre, flows into the Sava River.

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.

The hydrological parameters of the Kupa are regularly monitored at Radenci, Kamanje, Karlovac, Jamnička Kiselica and Farkašić.^[6]

• 
  Main spring.
• 
  Source canyon.
• 
  From Sodevska stena.
• 
  At Ozalj.
• 
  In Šišinec.

• Slovenian border barrier

• Šimunović, Petar (March 2013). "Predantički toponimi u današnjoj (i povijesnoj) Hrvatskoj" [Pre-Roman placenames in present-day (and historical) Croatia] (PDF). Folia onomastica Croatica (in Croatian) (22). Zagreb: Croatian Academy of Sciences and Arts: 147–214. Retrieved 18 January 2016.

• 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. ISSN 0351-0662.
• Kekuš, Milan (1984). "Geomorfološke osobine doline Kupe između Karlovca i Siska" (PDF). Hrvatski geografski glasnik (in Croatian). 46 (1): 21–50. Retrieved 24 November 2020.

Wikimedia Commons has media related to Kupa.

• source of Kupa pictures
• Panoramic of the source
• Awarded "EDEN - European Destinations of Excellence" non traditional tourist destination 2010