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Sotla / Sutla
Rijeka Sutla Zelenjak.jpg
Sutla River in Zelenjak, between Klanjec and Kumrovec
Country Slovenia, Croatia
Basin features
Main source 580 m (1,900 ft)[1]
River mouth Sava
135 m (443 ft)[1]
45°51′52″N 15°41′01″E / 45.8645°N 15.6835°E / 45.8645; 15.6835Coordinates: 45°51′52″N 15°41′01″E / 45.8645°N 15.6835°E / 45.8645; 15.6835
Basin size 584 km2 (225 sq mi)[2]
Physical characteristics
Length 89 km (55 mi)[2]

The Sutla (Croatian) or Sotla (Slovene) is a river flowing through Slovenia and Croatia, mostly forming their border. It is a tributary to the Sava, itself a tributary to the Danube. It is 89 kilometres (55 mi) long and has a watershed area of 584 square kilometres (225 sq mi).[2]

The Sutla flows through the following municipalities:

The hydrological parameters of the Sutla are regularly monitored in Croatia at Zelenjak.[3]

The division of the Sutla/Sotla basin area between Croatia and Slovenia is inconsistent in sources - Croatian sources claim either 343 km2 (132 sq mi)[4] or 455 km2 (176 sq mi),[5] while Slovenian sources claim either 477 km2 (184 sq mi)[6] or 451 km2 (174 sq mi)[1]

The Kozje Park (Slovene: Kozjanski park), established in 1981 as the Trebče Memorial Park (Spominski park Trebče), is located in the Slovenian territory to the west of the Sotla. It covers 206 km2 (80 sq mi) of the landscape of Kozje Hills (Kozjansko hribovje), including wetlands along the Sotla. It is the habitat of over 120 bird species and of about 950 higher plant species.[7]

It's been suggested that the names "Sutla" and "Sava" are related, but this is uncertain. Another theory is that the name "Sutla" comes from the Indo-European root *su, meaning "swine".


  1. ^ a b c "Reke, dolge nad 25 km, in njihova padavinska območja" [Rivers, longer than 25 km, and their catchment areas] (in Slovenian and English). Statistical Office of the Republic of Slovenia. 2002. 
  2. ^ a b c "Main Hydrographic Features in the Sava River Basin". Sava River Basis Analysis Report (PDF). Zagreb: International Sava River Basin Commission. September 2009. p. 13. 
  3. ^ "Daily hydrological report". Croatian Meteorological and Hydrological Service. Retrieved 2010-09-09. 
  4. ^ Ostroški, Ljiljana, ed. (December 2015). Statistički ljetopis Republike Hrvatske 2015 [Statistical Yearbook of the Republic of Croatia 2015] (PDF). Statistical Yearbook of the Republic of Croatia (in Croatian and English). 47. Zagreb: Croatian Bureau of Statistics. p. 49. ISSN 1333-3305. Retrieved 27 December 2015. 
  5. ^ "Karakteristike značajnijih vodotoka". Vodnogospodarska osnova Hrvatske - Strategija upravljanja vodama (in Croatian). Croatian Parliament. Retrieved 2011-12-19. 
  6. ^ [1] Visokovodni valovi – Sotla nad Draganjo in Draganja na izlivu (delovna verzija). Elaborat, Vodnogospodarski inštitut. Ljubljani, 2000.
  7. ^ Bizjak, Janez (2008). Zavarovana območja v Sloveniji [Protected Areas of Slovenia] (PDF) (in Slovenian and English). Ministry of the Environment and Spatial Planning, Republic of Slovenia. ISBN 978-961-6392-61-7. 

External links[edit]

  • Media related to Sutla at Wikimedia Commons