Natisone
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 has a pluvio-nival regime and belongs to the Adriatic Sea Basin.[2] 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 municipalities of Pulfero and Cividale del Friuli.