Vipava (river)

The Vipava (in Slovene) or Vipacco (in Italian) or "Wipbach" / "Wippach" (in German) is a river that flows through western Slovenia and northeast Italy. The river is in length, of which 45 km in Slovenia. After entering Italy it joins the Isonzo/Soča in the Municipality of Savogna d'Isonzo. This is a rare river with a delta source, formed by nine main springs. The Battle of the Frigidus was fought near the river, which was named "Frigidus" ('cold') by the Romans. It has the pluvial-nival regime in its upper course and the pluvial regime in its lower course.