The Natisone (Friulian: Nadison; Slovene: Nadiža; Latin: Natiso) is a 60-kilometre (37 mi) river in Slovenia and Italy.[1] It flows for some time as a border river between Slovenia and Italy, continues in Slovenia and then crosses the border and continues in Eastern Friuli, in northeastern Italy. It is the main tributary of the Torre and a sub-affluent of the Isonzo. It has the pluvio-nival regime and belongs to the Adriatic Sea Basin.[2]

The Natisone at Cividale del Friuli
Native nameNadiža  (Slovene)
Nadison  (Friulian)
CountryItaly, Slovenia
Physical characteristics
  locationPunta di Montemaggiore, Julian Prealps
  elevation415 m (1,362 ft)
45.9453°N 13.3647°E / 45.9453; 13.3647
Length60 km (37 mi)
Basin size322 km2 (124 sq mi)
Basin features
ProgressionTorreSočaAdriatic Sea

The Natisone is formed at 415 metres (1,362 ft) above sea level on the border between Friuli and Slovenia by the confluence of two streams: the Rio Bianco (Slovene: Beli potok) and the Rio Nero (Slovene: Črni potok) which spring from the Punta di Montemaggiore and Gabrovec mountains. Before the confluence with the Torre, it passes through the communes of Pulfero and Cividale del Friuli.


  1. "Nadiza River". Slovenian Tourist Board. Retrieved 18 April 2012.
  2. Brečko Grubar,, Valentina; Kovačič, Gregor (2010). "Pokrajinskoekološka oznaka jadranskega povodja v Sloveniji s poudarkom na kakovosti vodnih virov" [Landscape Ecological Characterization of the Adriatic Sea Basin in Slovenia with an Emphasis on Water Resource Quality]. Annales. Series historia et sociologia (in Slovenian). 20 (1): 153–168.CS1 maint: extra punctuation (link)
  • Media related to Natisone at Wikimedia Commons
  • Condition of Nadiža - graphs, in the following order, of water level, flow and temperature data for the past 30 days (taken in Potoki by ARSO)
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