Soča

The Isonzo/Soča (; ; ) is a river that flows through western Slovenia and northeastern Italy.
An Alpine river in character, its source lies in the Julian Alps in Slovenia and enters the Adriatic Sea close to the Italian town of Monfalcone.
Geography.
The Soča river has a length of , in Slovenia and in Italy.
Its drainage basin has a pronounced mountainous character with an average elevation of about above sea level, and an area of , (66%) in Slovenia and (34%) in Italy.
The watershed of this river is one of the few places where the Marble trout ("Salmo marmoratus") is found.
Course.
The source of the Soča lies in the Trenta Valley in the Julian Alps in northwestern Slovenia, at an altitude of . The river flows through the Triglav National Park where is the mountain Triglav (2,864 m), the highest mountain in the Julian Alps and in the country. Then it flows to the south past the Slovenian towns of Bovec, Kobarid, Tolmin, Kanal ob Soci and Nova Gorica (where it is crossed by the Solkan Bridge); here, at an altitude of , the river crosses the border and gets into Italy.
In Italy, the Soča, now called Isonzo, flows through several "comuni" of the Friuli-Venezia Giulia region. Theses "comuni" are:
Finally, it flows into the Gulf of Trieste (Adriatic Sea) in the "Riserva Naturale della Foce dell'Isonzo" ("Natural Reserve of the Mouth of the Isonzo"), to the southwest of the town of Monfalcone.
History.
The valley of the Soča river was the place where several battles were fought in World War I between May 1915 and November 1917, in which over 300,000 Austro-Hungarian and Italian soldiers lost their lives.