The Idrijca river near the Wild Lake
|Municipalities||Idrija, Cerkno, Tolmin|
|- left||Nikomlja, Kanošica, Trebušica|
|- right||Belca, Zala, Cerknica, Bača|
|- location||near Vojsko, Karst Plateau, Slovenia|
|- elevation||960 m (3,150 ft)|
|- location||Most na Soči, Tolmin, Slovenia|
|- elevation||150 m (492 ft)|
|Length||60 km (37 mi)|
|Basin||598 km² (231 sq mi)|
|Wikimedia Commons: Idrijca|
The area of the upper Idrijca, from its source to the town of Idrijca (a distance of about 30 km), is part of the Krajinski Park Zgornja Idrijca ("Upper Idrijca Natural Park"). Here there are many karst features and an important diversity of plant species.
This river is one of the few places where the Marble trout (Salmo marmoratus) is found.
From its source, the Idrijca flows to the southeast and then, after its confluence with the Beca river, turns to the northeast. Then, after passing through the town of Idrija, the river turns to the northwest and joins the Soča in Most na Soči, to the south of Tolmin.
Most of the tributaries of the Idrijca river are small stream. The most important is the Bača with a length of 22 km (14 mi); it joins the Idrijca in the village of Bača pri Modreju, in the municipality of Tolmin.
Footbridge over the river.
- "Zgornja Idrijca Natural Park". Krajinski park Zgornja Idrijca. Archived from the original on 29 March 2015. Retrieved 8 September 2014.
- "Reke, dolge nad 25 km, in njihova padavinska obmocja" [Rivers, longer than 25 km, and their catchment areas] (in Slovenian and English). Statistical Office of the Republic of Slovenia. 2002. Retrieved 2 September 2014.
- "Marble trout (Salmo armoratus)". Balkan Trout Restoration Group. Retrieved 4 September 2014.
- "Kart over Idrijca" (in Slovenian). Geopedia.si. 2002. Retrieved 2 September 2014.
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