Bača pri Modreju
It lies at the confluence of the Bača River with the Idrijca River , which in turn joins the Soča River at Most na Soči , northwest of the settlement . 
<triplet> Bača River <subj> Idrijca River <obj> mouth of the watercourse <triplet> Idrijca River <subj> Soča River <obj> mouth of the watercourse <triplet> Soča River <subj> Idrijca River <obj> tributary